First Supplement to Security Agreement

EXHIBIT 4.1(b)

EMCOR GROUP, INC.

First Supplement to Security Agreement

          THIS FIRST SUPPLEMENT TO SECURITY AGREEMENT (the “Supplement”) is dated as of this 21^st day of November, 2011 among EMCOR Group, Inc. (the “Company”), the other Debtors party hereto, and Bank of Montreal, as collateral agent (the “Agent”).

Preliminary Statements

          A.          The Debtors listed under the heading “Existing Debtors” on the signature pages attached hereto and the Agent are party to that certain Third Amended and Restated Security Agreement dated as of February 4, 2010 (such Security Agreement, as the same may from time to time be amended, modified or restated, being hereinafter referred to as the “Security Agreement”). All capitalized terms used herein without definition shall have the same meanings herein as such terms are defined in the Security Agreement.

          B.          Pursuant to the Security Agreement, the Existing Debtors granted to the Agent, for the benefit of the Secured Creditors, among other things, a continuing security interest in all of their personal property and fixtures as described therein.

          C.          Concurrently herewith, the Company, EMCOR Group (UK) plc., a United Kingdom public limited company (“EMCOR UK”), Agent, and certain other parties are entering into a Third Amended and Restated Credit Agreement dated as of even date herewith (such Credit Agreement, as the same may from time to time be amended, modified or restated, being hereinafter referred to as the “Credit Agreement”).

          D.          The Company wishes to (i) add certain of the Company’s subsidiaries listed under the heading “Additional Debtors” on the signature pages attached hereto as Debtors under the Security Agreement (the “Additional Debtors”; and together with the Existing Debtors, the “Debtors”), (ii) update Schedules A through F to the Security Agreement, and (iii) make certain other changes to the Security Agreement and the Agent is willing to do so on the terms and conditions set forth herein.

          E.          The Company and EMCOR UK provide the Debtors (other than the Company) with substantial financial, managerial, administrative, technical and design support and the Debtors will directly and substantially benefit from credit and other financial accommodations extended and to be extended by the Secured Creditors to the Company and EMCOR UK.

          NOW, THEREFORE, in consideration of the benefits accruing to the Debtors, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

          1.          Each Additional Debtor acknowledges and agrees that it shall become a “Debtor” party to the Security Agreement effective upon the date such Additional Debtor’s execution of this Agreement and the delivery of this Agreement to the Agent, and that upon such execution and delivery, all references in the Security Agreement to the terms “Debtor” or “Debtors” shall be deemed to include such Additional Debtor. Each Additional Debtor hereby acknowledges and agrees that the Obligations are secured by all of the Collateral according to, and otherwise on and subject to, the terms and conditions of the Security Agreement to the same extent and with the same force and effect as if such Additional Debtor had originally been one of the Existing Debtor under the Security Agreement and had originally executed the same as such an Existing Debtor.

          2.          Without limiting the generality of the foregoing, the Debtors hereby repeat and reaffirm all grants (including the grant of a lien and security interest), covenants, agreements, representations and warranties contained in the Security Agreement as supplemented hereby, each and all of which are and shall remain applicable to the Collateral from time to time owned by the Debtors or in which the Debtors from time to time have any rights. Without limiting the foregoing, in order to secure payment of the Obligations, whether now existing or hereafter arising, the Debtors hereby grant to the Agent for the benefit of the Secured Creditors, and hereby agrees that the Agent has and shall continue to have for the benefit of the Secured Creditors a continuing security interest in, among other things, all of the Debtors’ Collateral (as such term is defined in the Security Agreement), including, without limitation, all of the Debtors’ Receivables, Leases, General Intangibles, Inventory, Equipment, Investment Property, Pledged Notes, and all of the other Collateral described in, and subject to the limitations set forth in, Section 2 of the Security Agreement, each and all of such granting clauses being incorporated herein by reference with the same force and effect as if set forth in their entirety except that all references in such clauses to the Debtors or any of them shall be deemed to include references to the Additional Debtors. Nothing contained herein shall in any manner impair the priority of the liens and security interests heretofore granted in favor of the Agent under the Security Agreement.

          3.          The foregoing notwithstanding, (i) references to Borrowers in the Security Agreement shall be deemed to be references to the Company, EMCOR UK and any other Subsidiary of the Company that is designated as a Borrower under the Credit Agreement and (ii) references to the Credit Agreement in the Security Agreement shall be deemed references to the Credit Agreement as defined herein.

          4.          Schedules A through F to the Security Agreement shall be amended and restated in the form of Schedule A, B, C, D, E and F, respectively, attached hereto.

          5.          The Debtors agree to execute and deliver such further instruments and documents and do such further acts and things as the Agent may deem necessary or proper to carry out more effectively the purposes of this Supplement.

-2-

          6.          This Supplement may be executed in any number of counterparts and by different parties hereto on separate counterparts, each of which when so executed shall be an original but all of which to constitute one and the same instrument. Except as specifically amended and modified hereby, all of the terms and conditions of the Security Agreement shall stand and remain unchanged and in full force and effect.

          7.          No reference to this Supplement need be made in the Security Agreement or in any other document or instrument making reference to the Security Agreement, any reference to the Security Agreement in any of such items to be deemed a reference to the Security Agreement as supplemented hereby.

          8.          This Supplement shall be governed by and construed in accordance with the State of Illinois (without regard to principles of conflicts of law).

[Signature Page Follows.]

-3-

Dated as of the date first above written.

		“Existing Debtors”
		EMCOR Group, Inc.
		By:	/s/ Xxxxxxx X. Xxxxx
			Name:	Xxxxxxx X. Xxxxx
			Title:	President and Chief Executive Officer
		Forti/Xxxxx and Xxxx, L.L.C.
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Manager
		CSUSA Holdings L.L.C.
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Manager
		Trimech Plumbing L.L.C.
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Manager
		Xxxxxxxxx & Son, L.P.
		By:	CSUSA Holdings L.L.C., its General Partner
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Vice President

Signature Page to Security Agreement Supplement

S-1

		Border Electric Co., L.P.
		By:	CSUSA Holdings L.L.C., its General Partner
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Vice President
		Border Mechanical Co., L.P.
		By:	CSUSA Holdings L.L.C., its General Partner
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Vice President
		Professional Mechanical Contractors, L.L.C.
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Vice President
		Welsbach Electric Corp.
		By:	/s/ Xxxxx X. Xxxxxx
			Name:	Xxxxx X. Xxxxxx
			Title:	President / Chief Executive Officer

Signature Page to Security Agreement Supplement

S-2

Air Systems, Inc.

Atlantic Coast Mechanical, Inc.

Beaumont Real Estate Holding Company

Building Technology Engineers, Inc.

Central Mechanical Construction Co., Inc.

CES Facilities Management Services, Inc.

Combustioneer Corporation

Contra Costa Electric, Inc.

CS48 Acquisition Corp.

XXXXX-XXXXXXX INC. (f/k/a The Xxxx X. XxXxx Co.)

Design Air, Limited

Xxxxx Mechanical Corp.

Dyn Specialty Contracting, Inc.

Dynalectric Company

Dynalectric Company of Nevada

Dynalectric Company of Ohio

Dynalectric of Michigan II, Inc.

EMCOR Construction Services, Inc.

EMCOR-CSI Holding Co.

EMCOR Energy Services, Inc.

EMCOR Facilities Services, Inc.

EMCOR Government Services, Inc.

EMCOR Xxxxx, Inc.

EMCOR Xxxx Electric Co. of Indiana, Inc.

EMCOR International Inc.

EMCOR Mechanical/Electrical Services (East), Inc.

EMCOR Services Arizona, Inc.

EMCOR Services Northeast, Inc.

EMCOR Services New York/New Jersey, Inc.

EMCOR Services Team Mechanical, Inc.

F & G Management, Inc.

F & G Plumbing, Inc.

Fluidics, Inc.

Forest Electric Corp.

FR X Xxxxxxxx Acquisitions Co.

Xxxxxx Electric Co., Inc.

Great Monument Construction Company

Xxxxxx Mechanical Contractors, Inc.

Heritage Mechanical Services, Inc.

Hillcrest Sheet Metal, Inc.

Signature Page to Security Agreement Supplement

S-3

HNT Holdings Inc.

HVAC, Ltd.

Xxxxxxxxxxx-Xxxxxxx Mechanical, Inc.

Inte-Fac Corp.

X.X. Xxxxxxx Corp.

KDC Inc.

Xxxxxxx Service, Inc.

L.T. Mechanical, Inc.

Labov Mechanical, Inc.

Labov Plumbing, Inc.

Xxxxxx Electric Company, Inc.

Xxxxxxx Mechanical Corporation

Xxxxxxxx Mechanical Co., Inc.

Maximum Refrigeration & Air Conditioning Corp.

Meadowlands Fire Protection Corp.

Mechanical Services of Central Florida, Inc.

MES Holdings Corporation

Mesa Energy Systems, Inc.

Midland Fire Protection, Inc.

Monumental Heating, Ventilating and Air Conditioning Contractors, Inc.

Monumental Investment Corporation

Xxxxx & Black Mechanical, Inc.

North Jersey Mechanical Contractors, Inc.

Xxxxxxxx Industrial Services Inc.

Pace Mechanical Services II, Inc.

Penguin Air Conditioning Corp.

Penguin Maintenance and Services Inc.

Performance Mechanical, Inc.

Xxxxx & Xxxx Company of Florida

Xxxxx and Kent-New England, Inc.

Xxxxx and Xxxx-Connecticut, Inc.

X. X. Xxxxxxxx & Company, Inc.

Xxxxxx Equipment & Manufacturing Company

X. X. Xxxxxxxx Co., Inc.

The Betlem Service Corporation

The Xxxxx Company

The Xxxxx and Kent Company

The Xxxxx and Xxxx Corporation

Xxxxxxxx & Xxxxxx, Inc.

University Xxxxxxxx Mechanical, Inc.

Signature Page to Security Agreement Supplement

S-4

		University Mechanical & Engineering
				Contractors, Inc., a California
				corporation
		University Mechanical & Engineering
				Contractors, Inc., an Arizona
				corporation
		Xxxxxx-j-xxxxxx, Inc.
		Welsbach Electric Corp. of L.I.
		By:	/s/ R. Xxxxx Xxxx
			Name:		R. Xxxxx Xxxx
			Title:		Vice President
		F & G Mechanical Corporation
		By:		/s/ SalvatoreFichera
				Name:	Xxxxxxxxx Xxxxxxx
				Title:	President
		Aircond Corporation
		MOR PPM, Inc.
		New England Mechanical Services, Inc.
		New England Mechanical Services of Massachusetts, Inc.
		Xxxx Services, Inc.
		By:		/s/ Xxxxxxx Xxxxx
				Name:	Xxxxxxx Xxxxx
				Title:	Vice President
		Ohmstede Partners LLC
		By:		/s/ R. Xxxxx Xxxx
				Name:	R. Xxxxx Xxxx
				Title:	Manager

Signature Page to Security Agreement Supplement

S-5

		Ohmstede Holdings LLC
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Manager
		Xxxxxxxx Ltd.
		By:	Ohmstede Partners LLC, its General Partner
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Vice President
		“Additional Debtors”
		Xxxxxxx, Inc.
		Xxxxxxx Holdings, Inc.
		Intermech, Inc.
		Mechanical Specialties Contractors, Inc.
		Xxxxxxx Industries Corporation
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Vice President
		EMCOR Services CES, Inc.
		Xxxxx Xxxxxx & Associates, Inc.
		USM, Inc.
		USM (Delaware) Inc.
		USM Services Holdings, Inc.
		By:	/s/ Xxxxxxx Xxxxx
			Name:	Xxxxxxx Xxxxx
			Title:	Vice President

Signature Page to Security Agreement Supplement

S-6

		Xxxxxxx Environmental Specialties, LLC
		By:	/s/ R. Xxxxx Xxxx
			Name:	R. Xxxxx Xxxx
			Title:	Manager

Signature Page to Security Agreement Supplement

S-7

		Accepted and agreed to in Chicago, Illinois, as of the date first above written.
		Bank of Montreal, as Agent
		By	/s/ Xxxx X. Xxxxxxxxx
			Name:	Xxxx X. Xxxxxxxxx
			Title:	Director

Signature Page to Security Agreement Supplement

S-8

Schedule A

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
EMCOR Group, Inc. (Delaware Corporation) Org. No. 2120222		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
EMCOR Construction Services, Inc. (Delaware Corporation) Org. No. 2295158		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000		0000 Xxxxxx Xxxx Xxxx Xxxxx 000 XxXxxx, XX 00000		See Columns 2 & 3
EMCOR Facilities Services, Inc. (Delaware Corporation) Org. No. 2625001		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000		000 Xxxxx Xxxx. Xxxxx Xxxx, XX 00000 0000 Xxxx Xxxxxx Xxxxxx Xxxx., Xxxxxxx, XX 00000 000 Xxxxxxxx Xx. Xxxxxxx, XX		See Columns 2 & 3
EMCOR Services CES, Inc. (Delaware corporation) Org. No. 5014397		0000 Xxxxxxx Xx., Xxxxx 000 Xxxxxxxxx, XX 00000				See Column 2
Mesa Energy Systems, Inc. (California Corporation) Org. No.1281860		5 Vanderbilt Xxxxxx, XX 00000		0000 Xxxxxxxx Xxxxx #X Xxxxxxxxx, XX 00000 00000 Xxxxxx Xxxxxx Xxxxxxx, XX 00000 0000 Xxxxxxx Xxxxxxxxx Xxxxx Xxxxx, XX 00000 0000 Xx. Xxxxxx Xxxxxx Xxxxxx, XX 00000 0000 Xxxx Xxxxxx Xxxxxxx Xxxxxxxxxx, XX 00000 Xxxxxxxx Xxxxxx Xxxxxx Xxxx, XX 00000		See Columns 2 & 3

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				d/b/a Emcor Services Hillcrest 0000 Xxxxxx Xx. Xxxxxxxxxxx, XX 00000
				00000 Xxx Xxxxxxx Xxxx #000 Xxxxxxxx Xxxxxxx, XX 00000
				00000 Xxxxxxx Xxxx Xxxxxx #X Xxxxxx Xxxxxxx, XX 00000
Xxxxxxx Industries Corporation (Pennsylvania Corporation) Org. No. 647338		000 Xxxxxxxx Xxxx. Xxxxxxxx, XX 00000		00 Xxxxxxx Xx Xxxxxxxx, XX 00000
EMCOR International Inc. (Delaware Corporation) Org. No. 2184202		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
EMCOR Mechanical/Electrical Services (East), Inc. (Delaware Corporation) Org. No. 2293360		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
EMCOR Energy Services, Inc. (Delaware Corporation) Org. No.2704011		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000		Xxx Xxxx Xxxxx Xxx Xxxx, XX 00000 000 Xxxxxxx Xxxxxx Xxx Xxxxxxxxx, XX 00000		See Columns 2 & 3
Heritage Mechanical Services, Inc. (New York Corporation) None		000 Xxxxxxxx Xxxxxx Xxxx Xxxx, XX 00000				See Column 2
Welsbach Electric Corp. (Delaware Corporation) Org. No.0780011		000-00 00xx Xxxxxx Xxxxxxx Xxxxx, XX 00000-0000				See Column 2

A-2

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Forest Electric Corp. (New York Corporation) Org. No. None		0 Xxxx Xxxxx, Xx. 0 Xxx Xxxx, XX 00000		000 Xxxxxxxx Xxx. Xxxxxxx, Xxxxx 00 Xxxxxx, XX 00000		See Columns 2 & 3
Welsbach Electric Corp. of L.I. (New York Corporation) Org. No. None		000 Xxxxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
Penguin Maintenance and Services Inc (Delaware Corporation) Org. No. 2251604		00 Xxxx Xxxxxx Xxxxxxxx, XX 000000				See Column 2
Penguin Air Conditioning Corp. (New York Corporation) Org. No. None		00 Xxxx Xxxxxx Xxxxxxxx, XX 00000				See Column 2
X.X. Xxxxxxx Corp. (Delaware Corporation) Org. No. 2232450		00 Xxxxx Xxx, Xx. 0 Xxxxxxxxx, XX 00000		d/b/a Xxxxxx Mechanical 000 Xxxxxxxx Xxxxxxx Xxxxxxx, XX 00000		See Columns 2 & 3
Xxxxx Mechanical Corp. (Maryland Corporation) Org. No. D03916020		00000 Xxxxxxxx Xxxxx Xxxxx Xxxxxxxx, XX 00000				See Column 2
EMCOR Xxxx Electric Co. of Indiana, Inc. (Delaware Corporation) Org. No. 2267293		0000 Xxxxxxxx Xxxxxx Xxxxxxxx, XX 00000				See Column 2
Xxxxxx Electric Co., Inc. (New Jersey Corporation) Org. No. 0100081753		0000 Xxxxxxxxx Xxxxx Xxxxxxx Xxxxx, XX 00000				See Columns 2 & 3
University Mechanical & Engineering Contractors, Inc. (California Corporation) Org. No. 527647		0000 Xxxxxx Xxxxxx Xx Xxxxx, XX 00000				See Column 2
Pace Mechanical Services II, Inc. (Michigan Corporation)		0000 Xxxxxxxx Xx. Xxxxxxx Xxxxxxx, XX				See Column 2

A-3

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Org. No. 488043		48071
University Mechanical & Engineering Contractors, Inc. (Arizona Corporation) Org. No. 0059955-4		0000 Xxxxx Xxxxxxx Xxxx Xxxxx, XX 00000				See Column 2
Xxxxxx Mechanical Contractors, Inc. (Nevada Corporation) Org. No. C324-1971		0000 Xxxxx Xxxxxx Xxxx Xxxxxxxxx Xxx Xxxxx, XX 00000				See Column 2
Design Air, Limited (Washington Corporation) Org. No. 600314241		0000 Xxxxx 000xx Xxxxxx Xxxx, XX 00000-0000				See Column 2
Xxxxxxxx & Xxxxxx, Inc. (Colorado Corporation) Org. No. 19911078279		0000 Xxxx Xxxxxx Xxxxxx, XX 00000		000 Xxxxxxx Xxxxxx Xxxxxxxx Xxxxxxx, XX 00000		See Columns 2 & 3
EMCOR Xxxxx, Inc. (Texas Corporation) Org. No.0000000000		0000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
Inte-Fac Corp. (New York Corporation) Org. No. None		00 Xxxx Xxxxxx Xxxxxxxx, XX 00000				See Column 2
MES Holdings Corporation (Delaware Corporation) Org. No. 2441388		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
X. X. Xxxxxxxx & Company, Inc. (Virginia Corporation) Org. No. 179532		0000 Xxxxxx Xxxx Xxxxxxxx, XX 00000				See Column 2
Labov Mechanical, Inc. (Delaware Corporation) Org. No. 2693486		0000 Xxxxxxxxx Xxxx. Xxxxx X Xxxxxxxxxxxx, XX 00000				See Column 2

A-4

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Labov Plumbing, Inc. (Delaware Corporation) Org. No. 2693386		0000 Xxxxxxxxx Xxxx. Xxxxx X Xxxxxxxxxxxx, XX 00000				See Column 2
Dynalectric Company of Ohio (Ohio Corporation) Org. No. 807660		0000 Xxxxxxxxxxxxx Xxxxxx Xxxxxxxx, XX 00000				See Column 2
Dynalectric of Michigan II, Inc. (Delaware Corporation) Org. No. 2822379		000 Xxxxxxx Xxxxx Xxxxxxx XX 00000		00000 Xxxxxxxx Xx. Xxxxxxx Xxxxxxx, XX 00000		See Column 2
XxXxx-Xxxxxxx Inc. (Delaware Corporation) Org. No. 2945595		0000 Xxxxxxxx Xxxxxx Xxxxxxxxxx, XX 00000		0000 X. Xxxxxxx Xxxx Xxxxxx, XX 00000 000 Xxxxxx Xxxxx Xxxxxxxxx, XX 00000 d/b/a Dynaelectric Ohio 0000 Xxxxxxxxxxxxx Xxxxxx Xxxxxxxx, XX 00000-0000		See Column 2 & 3

A-5

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Xxxxxxxx Mechanical Co., Inc. (California Corporation) Org. No. C2114848		00000 Xxxxxx Xxxxxxx, XX 00000		0000 Xxxxx Xxxxxxx Xxxxx Xxxxxxx, XX 00000 0000 Xxxxxxx Xxxxx Xxxxx Xxxxxxxxxx, XX 00000 0000 Xxxxxxxxxx Xxxx. Xxxxxxxxxx, XX 00000		See Columns 2 & 3
Dynalectric Company (Delaware Corporation) Org. No. 2722041		0000 Xxxxxx Xxxx Xxxx, #000 XxXxxx, XX 00000		0000 Xxxxxxxxxx Xxxxxxx, Xxxxx 000 Xxxxxxxx, XX 00000		See Columns 2 & 3
				d/b/a Xxxxxxxx Dynalectric of Colorado 0000 Xxxx Xxxxxx. Xxxxxxxx Xxxxxxx, XX 00000 000 Xxxxxxxx Xxxxxxxxx Xxxxxx, Xx 00000 0000 X. Xxxxxxx Xxxx Xxx Xxxxx, XX 00000
				0000 Xxxxxxxxxx Xxxxx Xxx Xxxxx, XX 00000 00000 Xxxx Xxxx Xxxxxx, XX 00000 0000 Xxxxxxxxx Xxxxx Xxxxxx Xxxxxxxx, XX 00000 000 Xxxxxxx Xxxx Xxxxxxx Xxxx, XX 00000 0000 XX 000xx Xxxxxxx, XX 00000

A-6

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				0000 Xxxxxxxxx Xxxxxx Xx. Xxx Xxxxxxxx, XX 00000 0000 XX Xxxxx Xxxxxx Xxxxxxxx, XX 00000 000 Xxxxxxx Xxxx, Xxxxx 000 Xxx Xxxxx, XX 00000 d/b/a Wasatch Electric 0000 Xxxxx Xxxx Xxxxxx Xxxx Xxxx Xxxx, XX 00000
Dyn Specialty Contracting, Inc. (Virginia Corporation) Org. No. 295431		0000 Xxxxxx Xxxx Xxxx, #000 XxXxxx, XX 00000				See Column 2
KDC Inc. (California Corporation) Org. No. 770706		0000 Xxxxxxxxx Xxxxxx Xxxxx Xxx Xxxxxxxx, XX 00000		d/b/a KDC Systems 0000 Xxxxxxxxx Xxxxxx Xxxxx Xxx Xxxxxxxx, XX 00000 d/b/a KDC Systems 0000 X. X. Xxxxx Xxxxxx Xxxxxxxx, XX 00000		See Columns 2 & 3
Contra Costa Electric, Inc. (California Corporation) Org. No. C0273069		000 Xxxx Xxxx Xxxxxxxx, XX 00000		0000 Xxxxxx Xxxxx Xxxxxxxxxxx, XX 00000 0000 Xxxx Xxxxxx Xxxxxx Xxxxxx, XX 00000		See Columns 2 & 3
Dynalectric Company of Nevada (Nevada Corporation) Org. No. C238-1958		0000 Xxxx Xxxxxxx Xx Xxx Xxxxx, XX 00000				See Column 2

A-7

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
EMCOR Services Northeast, Inc. (Massachusetts Corporation) Org. No. None		00 Xxxxx Xxx Xxxxxxxxx, XX 00000				See Columns 2 & 3
Building Technology Engineers, Inc. (Massachusetts Corporation) Org. No. None Xxxxx & Kent Company of Florida (Delaware Corporation) Org. No. 3818963		000 Xxxxxxx Xxxxxx, Xxxxx 0000 Xxxxxxxx, XX 00000 0000 X.X. Xxxxx Xxxxx Xxxxx Xxxxx, XX 00000		000 Xxxxx Xxxx. Xxxxx Xxxx, XX 00000 0000 Xxxxx Xxxxxx Xxxxx, XX 00000 000 Xxxxx Xxxxx Xxxxxxx, Xxxxx 000 Xxxx Xxxx Xxxxx, XX 00000		See Columns 2 & 3
Monumental Investment Corporation (Maryland Corporation) Org. No. D01289180		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
The Xxxxx and Kent Company (Maryland Corporation) Tax I.D. 00-0000000 Org. No. D00174458		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
The Xxxxx and Xxxx Corporation (Maryland Corporation) Org. No. D00174466		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
		d/b/a Xxxxx and Xxxx Construction Services 000 Xxxxxxxxx Xxxx Xxxxxxxxx, XX 00000
X. X. Xxxxxxxx Co., Inc. (Ohio Corporation) Org. No. 437451		0000 Xxxxxxx Xxxxx Xxxxxxxxx, XX 00000		0000 Xxxxxxx Xxxxxxxxx Xxxx Xxxxxxx, XX		See Columns 2 & 3
				0000 Xxxxxxx Xxxxxxx Xxxx Xxxxx, XX 00000
				0000 Xxxxxxxxxxxxx Xxxxxxxxx

A-8

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				Xxxxxxxxxx, XX 00000
				000 Xxxxxxx Xxxxx XX Xxxxxx, XX 00000
				0000 X. 00xx Xxxxxx, Xxxx X Xxxxxxxxx, XX 00000
				00 Xxxxx Xxxxx Xxxxxx Xxxxxxxxxxxx, XX
				00000 Xxxxxxxx Xxxxx Xxxxxxxxxx Xxxxx, XX 00000
Air Systems, Inc. (California Corporation) Org. No.C2497209		000 Xxxxxxxxx Xxxxx Xxx Xxxx, XX 00000				See Column 2
Fluidics, Inc. (Pennsylvania Corporation) Org. No. 766706		0000 Xxxxxxxxx Xxxx., Xxxxx X Xxxxxxxxxxxx, XX 00000				See Column 2
University Xxxxxxxx Mechanical, Inc. (Delaware Corporation) Org. No. 4047723		0000 X. Xxxxxxx Xxxxx Xxxxxxx, XX 00000
Midland Fire Protection, Inc. (Rhode Island Corporation) Org. No. 56289		00 Xxxxx Xxx X.0 Xxxxxxxxx, XX 00000				See Column 2
Xxxxx and Kent-Connecticut, Inc. (Maryland Corporation) Org. No. D04800199		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
Xxxxx and Xxxx – New England, Inc. (Maryland Corporation) Org. No.D03688207		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2

A-9

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Monumental Heating, Ventilating and Air Conditioning Contractors, Inc. (Maryland Corporation) Org. No. D04254868		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
Forti/Xxxxx and Xxxx, L. L. C. (Maryland LLC) Org. No. W04265096		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
HVAC, Ltd. (Maryland Corporation) Org. No. D00816884		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
Atlantic Coast Mechanical, Inc. (Maryland Corporation) Org. No. D01557800		0000 Xxxxxxx Xxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
Great Monument Construction Company (Maryland Corporation) Org. No. D01495571		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
EMCOR- CSI Holding Co. (Delaware Corporation) Org. No. 3486633		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
Border Electric Co., L.P. (Texas Limited Partnership) Org. No. 0012427910		0000 Xxxxxxxx Xxxxxx Xx Xxxx, XX 00000				See Column 2
Border Mechanical Co., L.P. (Texas Limited Partnership) Org. No. 0012428010		0000 Xxxxxxxx Xxxxxx Xx Xxxx, XX 00000				See Column 2
Central Mechanical Construction Co., Inc. (Delaware Corporation) Org. No. 2892099		000 Xxxxx Xxxxxx Xxxxxxxxx, XX 00000		000 XX Xxxxxxx 00 Xxxxxx, XX 00000		See Columns 2 & 3
XX00 Xxxxxxxxxxx Corp.		301 Xxxxxxx Seven		000 Xxxx 00xx Xxxxxxxx, XX 00000		See Column 2

A-10

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
(Delaware Corporation) Org. Xx. 0000000		Xxxxxxx, XX 00000
CSUSA Holdings L.L.C. (Delaware Corporation) disregarded entity Org. No. 3467627		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
F & G Mechanical Corporation (Delaware Corporation) Org. No. 2850884		000 Xxx Xxxxxx Xxxx Xxxxxxxx, XX 00000				See Columns 2 & 3
F & G Plumbing, Inc. (New Jersey Corporation) Org. No. 0100873145		000 Xxx Xxxxxx Xxxx Xxxxxxxx, XX 00000				See Columns 2 &3
EMCOR Services New York/ New Jersey, Inc. (Delaware Corporation) Org. No. 2930475		00-00 00xx Xxxxxx Xxxx Xxxxxx Xxxx, XX 00000		000 Xxxx Xxxxxxx Xxxxxxx Xxxxxx, XX 00000		See Columns 2 & 3
Hillcrest Sheet Metal, Inc. (Delaware Corporation) Org. No. 2788607		0000 Xxxxxx Xxxxx Xxxxxxxxxxx, XX 00000				See Column 2
Xxxxxxxxxxx-Xxxxxxx Mechanical, Inc. (Delaware Corporation) Org. No. 2913106		0000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000		000 Xxxxx 00xx Xxxxxx Xxxxxxxxx, XX 00000		See Column 2 and 3
Xxxxxxx Service, Inc. (Ohio Corporation) Org. No. 581186		0000 Xxxxxxxx Xxxxxx Xxxxxxxxxx, XX 00000				See Columns 2 & 3
Xxxxxx Electric Company, Inc. (Tennessee Corporation) Org. No. 0154850		0000 Xxxxxxxx Xxxxxxxxx Xxxx, Xxxx Xxxxxxxx, XX 00000				See Column 2
Xxxxxxx Mechanical Corporation (New York Corporation) Org. No. None		000 Xxxx 00xx Xxxxxx, Xxxxx 0000-00 Xxx Xxxx, XX 00000		00-00 00xx Xxxxxx Xxxx Xxxxxx Xxxx, XX 00000		See Columns 2 & 3

A-11

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Maximum Refrigeration & Air Conditioning Corp. (Delaware Corporation) Org. No. 2892098		000 Xxx Xxxxxx Xx Xxxxxxxx, XX 00000				See Column 2
Meadowlands Fire Protection Corp. (New Jersey Corporation) Org. No. 0100215829		000 Xxx Xxxxxx Xx Xxxxxxxx, XX 00000				See Column 2
Xxxxx & Black Mechanical, Inc. (Delaware Corporation) Org. No. 0100076108		0000 X. Xxxxxxxx Xxxxx Xxxxxx, XX 00000				See Column 2
North Jersey Mechanical Contractors, Inc. (New Jersey Corporation) Org. No. 0100076108		0 Xxxxx Xxxxxx, Xxxxx 0X Xxxxxxxx, XX 00000				See Columns 2 & 3
Xxxxxxxxx & Son, L.P. (Texas Limited Partnership) Org. No. 002169710		0000 Xxxxxxxxxxx Xxxxx Xxxx Xxxxx, XX 00000		Xxxxxxxxx & Son, L.P. Detroit Fire Protection 00000 Xxxxxxx Xxxxxx Xxxxxxxxxx, XX 00000 Xxxxxxxxx & Son, L.P. South Bend Mechanical 00000 X. Xxxxxxxxx Xxxx. Xxxxxxxxx, XX 00000		See Columns 2 & 3
				Xxxxxxxxx & Son, L.P. Xx Xxxxx Division 0000 Xxxxxx Xxxx Xxxxxxxxx, XX 00000 Advanced Systems Computer Consultants 0000 Xxxxxxxx Xxxxx Xxxx Xxxxx, XX 00000
				Advanced Systems Group, Inc.

A-12

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				0000 Xxxxxxxx Xxxxx Xxxx Xxxxx, XX 00000 Xxxxxxxxx & Son, L.P. Lafayette Electric Division 0000 Xxxxxx Xxxx Xxxxxxxxx, XX 00000 Xxxxxxxxx & Son, X.X. Xxxxxx Fire Protection 000 Xxxx Xxxxx Xxxxxx Xxxxxx, XX 00000 d/b/a Pace Mechanical     Services 00000 Xxxxxxxx Xx. Xxxxxxx Xxxxxxx, XX 00000
				Xxxxxxxxx & Son, L.P. Indianapolis Electric Division 0000 X. Xxxxxx Xxxxxx Xxxxxxxxxxxx, XX 00000 d/b/a Havel Brothers 0000 XxXxxxx Xxxx. Xxxx Xxxxx, XX 00000 d/b/a Xxxxx Brothers Xxxxx Xxxxx Xxxxx Xxxxx Xxxx, XX 00000
				d/b/a Xxxxx Brothers 0000 X 00xx Xxxxxx Xxxxxxxxxxxx, XX 00000 Xxxxxxxxx & Son, L.P. South Bend Fire Protection 00000 X. Xxxxxxxxx Xxxx. Xxxxxxxxx, XX 00000

A-13

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				Xxxxxxxxx & Son, L.P. 0000 Xxxxxxxx Xxxx Xxxxxxx Xxxxx, XX 00000 d/b/a Xxxxx Brothers 0000 Xxxxxxx, Xxxxx 0 Xxxxxxxxx, XX 00000
The Xxxxx Company (Kansas Corporation) Org. No. 630954		0000 Xxxxxxxxxxx Xxxx Xxxxxx Xxxx, XX 00000		00 X. 0xx Xxxx Xxxxx, XX 00000		See Columns 2 & 3
Xxxxxx-J-Xxxxxx, Inc. (Tennessee Corporation) Org. No. 0033339		0000 X. Xxxxxx Xx. #0 Xxxxxxx, XX 00000				See Column 2
EMCOR Government Services, Inc. (Maryland Corporation) Org. No. D03903283		0000 Xxxxxxx Xx., Xxxxx 000 Xxxxxxxxx, XX 00000				See Column 2
EMCOR Services Arizona, Inc. (Delaware Corporation) Org. No. 4550552		0000 Xxxx Xxxxxx Xxxxxx Xxxx., Xxxxx 00 Xxxxxxx, Xxxxxxx 00000				See Column 2
Aircond Corporation (Georgia Corporation) Org No. J202485		000 Xxxx Xxxxx Xxxxx, X.X. Xxxxxx, XX 00000		000 Xxxxxx Xxxxx Xxxxxxxxxxxxx, XX 00000 0000 Xxxxxxxxx Xxxxx Xxxxx, XX 00000 0000 Xxxx Xxxxx Xxxx Xxxxxxxx, XX 00000 0000 Xxxxxxxx Xxxx, Xxxxx 0 Xxxxxx, XX 00000 000 Xxxxxxx Xxxx Xxxxxxxx, XX 00000-0000		See Columns 2 & 3

A-14

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				000 Xxx Xxxx Xxxx, Xxxxx X Xxxxxxxxx, XX 00000 0000 Xxxxxx Xxxxxxxx Xxxx, Xxxxx X Xxxxxxx, XX 00000
The Betlem Service Corporation (New York Corporation) Org. No. None		000 Xxxxxxx Xxxxxx, Xxxxx Xxxxxxxxx, XX 00000				See Columns 2 & 3
CES Facilities Management Services, Inc. (Maryland Corporation) Org. No. D05515994		0000 Xxxxxxx Xxxxx, Xxxxx 000 Xxxxxxxxx, XX 00000				See Column 2
Combustioneer Corporation (Maryland Corporation) Org. No. D03050507		000 Xxxxxxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
EMCOR Services Team Mechanical, Inc. (Delaware Corporation) Org No. 4026937		000 Xxxxxxxxx Xxxxx Xxxxxxx Xxxxx, XX 00000				See Column 2
New England Mechanical Services of Massachusetts, Inc. (Massachusetts Corporation) Org. No. None		00 Xxxxx Xxxxxx Xxxxxx, XX 00000				See Column 2
New England Mechanical Services, Inc. (Connecticut Corporation) Org. No. 0033131		000 Xxxxxx Xxxx Xxxxxx, XX 00000		00 Xxxxxx Xxxxx Xxxxxxxx, XX 00000 000 Xxxxxx Xxxxxx Xxxxxxxx, XX 00000 3 Xxxx’x Xxxx Xxx Xxxxxx, XX 00000 00 Xxxxx Xxxxxx Xxxxxx, XX 00000		See Columns 2 & 3

A-15

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				000 Xxxxxxx Xxxxxx Xxxxxxxxx, XX 00000
Trimech Plumbing L.L.C. (Delaware Limited Liability Corp.) Org. No. 3463843		000 Xxxx Xxxxxxx Xxxxxxx Xxxxxx, XX 00000				See Column 2
Xxxx Services, Inc. (Ohio Corporation) Org. No. 470852		00 X. Xxxxxxxx Xxxxxx Xxxxxxxxxx, XX 00000		0000 00xx Xxxxxx Xxxxxxxx, XX 00000 0000 Xxxx Xxxxxx Xxxxxx Xxxxx, XX 00000		See Columns 2 & 3
F & G Management, Inc. (Delaware Corporation) Org. No. 3581028		000 Xxxxxxx Xxxxx Xxxxxxx, XX 00000				See Column 2
FR X Xxxxxxxx Acquisitions Co. (Delaware Corporation) Org. No. 4168905		000 Xxxx Xx. Xxxxxxxx, XX 00000				See Column 2
HNT Holdings Inc. (Delaware Corporation) Org. No. 3372290		000 Xxxx Xx. Xxxxxxxx, XX 00000				See Column 2
Ohmstede Partners LLC (Delaware LLC) Org. No. 3388080		000 Xxxx Xx. Xxxxxxxx, XX 00000				See Column 2
Ohmstede Holdings LLC (Delaware LLC) Org. No. 3388083		000 Xxxx Xx. Xxxxxxxx, XX 00000				See Column 2
Ohmstede Ltd. (Texas Limited Partnership) Org. No. 00151033-10		000 Xxxx Xx. Xxxxxxxx, XX 00000		000 X. Xxxx Xxxxxx Xxxxxxxx, XX 00000 000 Xxxxx Xx. Xxxxxx Xxxxxxx, XX 00000 00000 Xxxxxxx 000 XxXxxxx, XX 00000 0000 Xxxxxxx 00 Xx. Xxxxxxx, XX 00000		See Columns 2 & 3

A-16

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
				000000 Xxxxxxx Xxxxxx Xxxxxx, XX 00000 0000 Xxxxxx Xx. Xxxxxxx, XX 00000
Xxxxxxxx Industrial Services Inc. (Texas Corporation) Org. No. 117921700		000 Xxxx Xx. Xxxxxxxx, XX 00000				See Column 2
Beaumont Real Estate Holding Company (Texas Corporation) Org. No. 800104306		000 Xxxx Xx. Xxxxxxxx, XX 00000				See Column 2
Performance Mechanical, Inc. (California Corporation) Org. No. C1186280		000 Xxxxxxxxxx Xxxx Xxxxxxxxx, XX 00000				See Column 2
Xxxxxx Equipment & Manufacturing Company (California Corporation) Org. No. C0431393		00000 X. Xxxxxxxxx Xxxxxx Xxxxxxxx, XX 00000-0000				See Column 2
Professional Mechanical Contractors, L.L.C. (Connecticut Corporation) Org. No. 0516430		00 Xxxxxxx Xxxx Xxxxxxxxxxx, XX 00000				See Column 2
Mechanical Services of Central Florida, Inc. (Florida Corporation) Document No. P03000008527		0000 Xxxxxxxx Xxxx. Xxxxxxx, XX 00000				See Column 2
MOR PPM, Inc. (South Carolina Company) Org No. None		0000 Xxxxx Xxxx Xxxxxx Xxxxxxx Xxxx, XX 00000				See Column 2
L.T. Mechanical, Inc. (North Carolina Corporation) Org. No. 0649719		0000 Xxxxxxx Xxxxxxxx Xxxxx Xxxxxxxxx, XX 00000				See Column 2
Xxxxxxx Holdings, Inc. (North Carolina Corporation) Org. No. 0800684		0000 Xxxxxxxxx Xxxx. Xxxxxxx-Xxxxx, XX 00000
Xxxxxxx, Inc. (North Carolina Corporation) Org. No. 0287987		0000 Xxxxxxxxx Xxxx. Xxxxxxx-Xxxxx, XX 00000		000 Xxxxx Xxxxx Xxxx XxXxxxxxxxxx, XX 00000

A-17

Name of Debtor (And Organizational No.)		Chief Executive Office		Additional Places of Business		Location of Collateral Held by Debtor
Xxxxxxx Environmental Specialties, LLC		0000 Xxxxx Xxxx Xxxxxxx, XX 00000
(North Carolina limited liability company)
Org. no. 0571969
Mechanical Specialties Contractors, Inc. (North Carolina Corporation)		000 Xxxxxxx Xxxx Xxxxx Xxxxx X Xxxxxxxxx, XX 00000		0000 Xxxxxx Xx. Xxxxx X Xxxxxxxxxxxxx, XX 00000
Org. No. 0406593
Intermech, Inc. (Delaware Corporation) Org. No. 0894383		0000 Xxxxxxxxx Xx. Xxxxxxx-Xxxxx, XX 00000		0000 Xxxxxxxxxx Xx. Xxxxx Xxxxx, XX 00000 000 Xxxxx Xxxxx Xxxxx, XX 00000 000 Xxxxxx Xxx. Xxxxxxxx, XX 00000
Xxxxx Xxxxxx & Associates, Inc. (Florida Corporation) Org. No. 238126		0000 Xxxxxxx Xxxxxx Xxxx. Xxxxx 000 Xxxxxxxxxxxx, XX 00000		0000 Xxxxx Xxxx Xxxxx Xx. 0 Xxxx Xxxx Xxxxx, XX 00000 0000 X. 0xx Xxx. Xxxxx Xx. X0 Xxxxxxxxx, XX 3250
USM Services Holdings, Inc. (Delaware Corporation) Org. No. 4927170		0000 Xxxxxxx Xx. Xxxxxxxxxx, XX 00000
USM (Delaware) Inc. (Delaware Corporation) Org. No. 4435782		0000 Xxxxxxx Xx. Xxxxxxxxxx, XX 00000
USM, Inc. (Pennsylvania Corporation) Org. No. 1048528		0000 Xxxxxxx Xx. Xxxxxxxxxx, XX 00000		000 Xxxxx Xxxxx Xxxxx 000 Xxxxxxx, XX 00000 000 Xxxxxx Xxx Xxxx, XX 00000

A-18

Schedule B

Trade Names

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
EMCOR Group, Inc.		None		None
EMCOR Construction Services, Inc.		EMCOR Construction Holding Services, Inc. (DE)		None
		EMCOR Mechanical/Electrical Services (Midwest), Inc.; EMCOR Mechanical/Electrical Services (South), Inc.; EMCOR Mechanical/Electrical Services (West), Inc. - each in DE
EMCOR Facilities Services, Inc.		None		EMCOR Energy Services
				EMCOR Industrial Services Consulting Group
				Efacilities
				Chicago Fire Protection Group
				Facilities Knowledge Center (with respect to the Phoenix, AZ property)
				EMCOR Customer Solutions Center
				EMCOR Mobile Services
				EMCOR Mechanical Services
				EMCOR Services
Mesa Energy Systems, Inc.		None		EMCOR Services Integrated Solutions
				EMCOR Service VSD
				EMCOR Services
				Xxxxxx Air Conditioning
				EMCOR Services ARC
				EMCOR Services Xxxxxx (re
				the Lemon Grove, CA property)
				EMCOR Service Xxxxxx Air
				EMCOR Services Mesa
				Hillcrest Air Conditioning
				Hillcrest Sheet Metal
				EMCOR Service Mesa
				EMCOR Services Nevada

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
EMCOR International Inc.		None		None
EMCOR Mechanical/ Electrical Services (East), Inc.		None		None
EMCOR Energy Services, Inc.		EMCOR Energy & Technologies, Inc. (DE)		EMCOR Energy EMCOR Energy Services
		Xxxxxxx Xxxxxxxx Associates (CA)		EMCOR Telecom EMCOR Technologies
Heritage Mechanical Services, Inc.		Heritage Xxxxxxx Mechanical Services, Inc. (NY)		EMCOR Service Heritage Air Systems
				Heritage Air Systems
				Heritage Mechanical Services
Welsbach Electric Corp.		None		Tech Serv Broadway Maintenance Xxxxxx Signs AZCO Modular Structures
Forest Electric Corp.		None		Forest Datacom Services
Welsbach Electric Corp. of L.I.		None		Broadway Maintenance Forest/Welsbach Technical Services
Penguin Maintenance and Services Inc.		None		Broadway Electrical Maintenance
Penguin Air Conditioning Corp.		None		Penguin Broadway Electrical Maintenance
				EMCOR Service Penguin Air Penguin Broadway Maintenace & Service
X. X. Xxxxxxx Corp.		None		Xxxxxx Mechanical
				EMCOR Service Xxxxxx Mechanical
				X.X. Xxxxxxx
				X.X. Xxxxxxx Service Company
				Xxxxx-XxXxxxxxxx
Xxxxx Mechanical Corp.		None		Xxxxx Mechanical
EMCOR Xxxx Electric Co. of Indiana, Inc.		JWP/Xxxx Electric Co. of Indiana, Inc.		JWP Electrical Services Co. of Ohio

B-2

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
		(DE)		JWP Xxxx Electric of Ohio
				JWP/Xxxx Electric of Ohio
Xxxxxx Electric Co., Inc.		None		EMCOR Technologies
				Xxxxxx Electric and Technologies
				Communication and Data Services
				Xxxxxx Electric & Technology Solutions
University Mechanical & Engineering Contractors, Inc. (California Corporation)		None		Spira-Loc University Industrial Services
Pace Mechanical Services II, Inc.		Pace Mechanical Services, Inc.		EMCOR Service Pace Mechanical
				EMCOR Pace Mechanical Services, Inc. Pace Mechanical Services
University Mechanical & Engineering Contractors, Inc. (Arizona Corporation)		None		None
Xxxxxx Mechanical Contractors, Inc.		None		None
Design Air, Limited		None		None
Xxxxxxxx & Xxxxxx, Inc.		None		None
EMCOR Xxxxx, Inc.		None		Xxxxx, Inc.
				The Xxxxxx Company
				Gowco
				Gowco, Inc.
				Systems Commissioning
				Gowan Sheet Metal Gowan Sheet Metal, Inc.
				EMCOR Service Gowan
				EMCOR Service Xxxxx, Inc.
Inte-Fac Corp.		None		None
MES Holdings Corporation		None		None
X. X. Xxxxxxxx & Company, Inc.		None		None
Labov Mechanical, Inc.		None		Labov Mechanical Contractors
				EMCOR Services Labov

B-3

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
				EMCOR Service Labov EMCOR Services Labov Mechanical EMCOR Services Fluidics Labov
Labov Plumbing, Inc.		None		None
Dynalectric Company of Ohio		None		None
Dynalectric of Michigan II, Inc.		Dynalectric of Michigan, Inc.		Xxxx Xxxxxx Electric & Technologies
				Dynalectric Michigan
XxXxx-Xxxxxxx Inc.		The Xxxx X. XxXxx Co.		XxXxx Xxxxxxx
				EMCOR Service XxXxx- Xxxxxxx
				EMCOR Service Automated Controls
				Dynalectric Ohio
Xxxxxxxx Mechanical Co., Inc.		None		Control Systems Specialist
				University Xxxxxxxx Mechanical
Dynalectric Company		None		Dynatran
				Xxxxxxxx Dynalectric of Colorado
				Wasatch Wasatch Electric
				Dynalectric Information Technologies
				Dynalectric Service & Systems Group
				EMCOR Construction Services
				Dynatechnologies
DYN Specialty Contracting, Inc.		None		None
KDC Inc.		None		KDC Systems
				Dynalectric IDMA
Contra Costa Electric, Inc.		None		None
Dynalectric Company of Nevada		None		None
EMCOR Services Northeast, Inc.		Balco, Inc. (MA)		EMCOR Services Balco/ X.X. Xxxxxxx
		Commonwealth Air Conditioning and		EMCOR Services CommAir

B-4

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
		Heating, Inc. (MA)		EMCOR Services CommAir/Balco
				EMCOR Services Northeast Balco/X.X. Xxxxxxx
				EMCOR Services Northeast CommAir
				EMCOR Services Northeast XxxxXxx Xxxxx EMCOR Services Balco
Building Technology Engineers, Inc.		None		BTE (Massachusetts), Inc.
				BTE of Massachusetts
				Building Operations Technologies of Mass
				Building Technology, Inc.
				Building Technology
Xxxxx & Kent Company of Florida		None		None
Monumental Investment Corporation		None		None
The Xxxxx and Xxxx Corporation		None		Xxxxx Mechanical EMCOR Services Xxxxx and Xxxx
				Xxxxx and Xxxx Construction Services
The Xxxxx and Kent Company		None		EMCOR Service Xxxxx and Xxxx
				EMCOR Service Xxxxx and Kent Northern Operations
				EMCOR Service Xxxxx and Xxxx Southern Operations
				The Xxxxx and Kent Company of Maryland
X. X. Xxxxxxxx Co., Inc.		None		None
Air Systems, Inc.		Air Systems Acquisition, Inc.		EMCOR Services Air Systems
		San Xxxx Air Systems, Inc.		EMCOR Services
Fluidics, Inc.		Wredna, Inc. (DE) and QLR Corporation (DE)		EMCOR Services Fluidics

B-5

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
University Xxxxxxxx Mechanical Co., Inc.		None		None
Midland Fire Protection, Inc.		None		None
Xxxxx and Kent-Connecticut, Inc.		Environmental Engineering Company (MD)		None
		Xxxxx and Xxxx Distributors, Inc. (MD)
Xxxxx and Kent - New England, Inc.		None		None
Monumental Heating, Ventilating and Air Conditioning Contractors, Inc.		None		None
Forti/Xxxxx and Xxxx, LLC		None		None
HVAC, Ltd.		None		None
Atlantic Coast Mechanical, Inc.		None		None
Great Monument Construction Company		None		None
EMCOR-CSI Holding Co.		None		None
Border Electric Co., L.P.		None		None
Border Mechanical Co., L.P.		None		None
Central Mechanical Construction Co., Inc.		None		None.
CS48 Acquisition Corp.		None		None
CSUSA Holdings L.L.C.		None		None
F & G Mechanical Corporation		None		EMCOR Services F & G Mechanical
F & G Plumbing, Inc.		None		None

B-6

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
EMCOR Services New York/ New Jersey, Inc.		Gotham Air Conditioning Service, Inc. (DE)		EMCOR Services Gotham Air
				Gotham Air Conditioning Services
		Trimech Corporation (NJ)		EMCOR Services Trimech
Hillcrest Sheet Metal, Inc.		None		Healthy Air Ducts
				Hillcrest Air Conditioning EMCOR Services Hillcrest
Xxxxxxxxxxx-Xxxxxxx Mechanical, Inc.		Kilgust Mechanical, Inc.		Xxxxxxxxxxx-Xxxxxxx Mechanical
				EMCOR Services Integrated Solutions
Xxxxxxx Service, Inc.		None		EMCOR Service XxXxx Xxxxxxx XxXxx Xxxxxxx
Xxxxxx Electric Company, Inc.		None		None
Xxxxxxx Mechanical Corporation		None		Heritage Xxxxxxx Heritage Mechanical
Maximum Refrigeration & Air Conditioning Corp.		None		None
Meadowlands Fire Protection Corp.		None		None
Xxxxx & Black Mechanical, Inc.		None		EMCOR Services Xxxxx & Black
North Jersey Mechanical Contractors, Inc.		None		NJM Service North Jersey Maximum Mechanical
Xxxxxxxxx & Son, L.P.		None		Xxxxx Brothers
				Xx Xxxxx
				Guardian Fire Protection
				Acoustics
				Advanced Systems Group
				Advanced Systems

B-7

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
				Computer Consultants
				Chicago Fire Protection Acoustics
				Xxxxx Guardian Fire Protection Systems Pace Mechanical Services EMCOR Facility Services EMCOR Construction Services Xxxxxxxxx Fire Protection Dynalectric Michigan Advanced Systems Computer Consulting
The Xxxxx Company		None		KC Fab
				Xxxxx Supermarket Refrigeration
Xxxxxx-J-Xxxxxx, Inc.		None		EMCOR Service Xxxxxx
				EMCOR Services Xxxxxx X. Xxxxxx
				EMCOR Services Integrated Solutions
EMCOR Government Services, Inc.		Consolidated Engineering Services, Inc. (MD)		Consolidated Services, Inc. EMCOR Services Consolidated Services of Maryland, Inc.
				Consolidated Engineering Services, Inc.
				Consolidated Engineering Services
Aircond Corporation		None		EMCOR Services Aircond EMCOR Services Integrated Solutions EMCOR Service Integrated Services
The Betlem Service Corporation		None		EMCOR Services Betlem Residential
				EMCOR Services Betlem Home Energy
				Betlem Heating and Air Conditioning
				EMCOR Services Betlem Service
				EMCOR Services betlem
CES Facilities Management Services, Inc.		None		None

B-8

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
Combustioneer Corporation		None		EMCOR Services Combustioneer
				EMCOR Services Mid-Atlantic
EMCOR Services Team Mechanical, Inc.		EMCOR Services Midwest, inc.		EMCOR Services Xxxxx Mechanical Midwesco Services EMCOR Midwesco Services Team Mechanical EMCOR Services Midwest
New England Mechanical Services of Massachusetts, Inc.		None		None
New England Mechanical Services, Inc.		None		NEMSI
				EMCOR Services New England Mechanical
Trimech Plumbing L.L.C.		None		None
Xxxx Services, Inc.		None		None
F & G Management, Inc.		None		None
FR X Xxxxxxxx Acquisitions Co.		None		None
Ohmstede Partners LLC		None		None
Beaumont Real Estate Holding Company		None		None
HNT Holdings Inc.		None		None
Xxxxxxxx Industrial Services Inc.		Hydraulic Extractor Services, Inc.		United Industrial Services- Beaumont
				Ohmstede United Industrial Services Divison
				Elite Project Planning
Ohmstede Holdings LLC		None		None
Xxxxxxxx Ltd.		Ohmstede XX		Xxxxxxxx Ltd., XX Xxxxxxxx Ltd., Limited Partnership
Performance Mechanical, Inc.		None		None
Xxxxxx Equipment and Manufacturing Company		None		None

B-9

Debtor’s Name		Prior Legal Name in Past 5 Years		Trade Names/Names in Past 5 Years
Professional Mechanical Contractors, LLC		None		None
Mechanical Services of Central Florida, Inc.		None		EMCOR Services Integrated Solutions of Florida EMCOR Services MSI – Mechanical Services
MOR PPM, Inc. L.T. Mechanical, Inc.		None None		PPM EMCOR Services L.T. Mechanical
EMCOR Services Arizona, Inc.		None		None
USM, Inc.		Tower Clearing Systems, Inc.
		US Maintenance Inc.
Xxxxxxx, Inc.		Luwa, Inc.
Xxxxxxx Environmental Specialties, LLC		Luwa Environmental Specialties

B-10

SCHEDULE C
INTELLECTUAL PROPERTY

Trademarks and Trademark Applications: EMCOR Group, Inc.

TRADEMARK

COUNTRY

STATUS

APP. NO.

FILED

REG. NO.

REGISTERED

Be There For Life

CANADA

PENDING

1,341,139

03/28/2007

Be There For Life

EUROPEAN UNION (CT)

PENDING

005835699

04/17/2007

Be There For Life

UNITED STATES

PENDING

77/027,226

10/23/2006

Design

EUROPEAN UNION (CT)

PENDING

004986816

03/30/2006

Design

SOUTH AFRICA

REGISTERED

2001/12319

7/17/2001

2001/12319

3/15/2006

Design

SOUTH AFRICA

PENDING

2001/12318

7/17/2001

Diamond Design

CANADA

REGISTERED

1,227,886

8/20/2004

662,032

3/31/2006

Diamond Design

CANADA

PENDING

1,296,603

04/04/2006

Diamond Design

UNITED STATES

REGISTERED

76/197,550

1/19/2001

2,563,476

4/23/2002

Drake & Xxxxx

UNITED ARAB EMR

REGISTERED

48216

06/23/2002

35824

01/15/2003

Drake & Xxxxx International

UNITED ARAB EMR

REGISTERED

48215

06/23/2002

35823

01/15/2003

EFS

EUROPEAN UNION (CTM)

REGISTERED

002348464

8/22/2001

002348464

6/10/2003

EFS

SOUTH AFRICA

REGISTERED

2001/13770

8/10/2001

2001/13770

7/11/2006

EFS

UNITED KINGDOM

REGISTERED

2278738

8/23/2001

2278738

8/23/2001

EFS

UNITED STATES

REGISTERED

76/123,985

9/ 7/2000

2,940,330

4/12/2005

EFS - FACILITIES

SOUTH AFRICA

REGISTERED

2001/13772

8/10/2001

2001/13772

7/11/2006

EFS - FACILITIES

UNITED ARAB EMR

REGISTERED

44911

10/30/2001

35128

12/14/2002

EFS - FACILITIES

EUROPEAN UNION (CTM)

REGISTERED

002349108

8/22/2001

002349108

7/29/2003

EFS - FACILITIES

UNITED KINGDOM

REGISTERED

2278740

8/23/2001

2278740

8/23/2001

EFS - FACILITIES

SOUTH AFRICA

REGISTERED

2001/13771

8/10/2001

2001/13771

7/11/2006

EMCOR

CANADA

REGISTERED

1,227,764

8/20/2004

651,736

10/25/2005

EMCOR

CANADA

REGISTERED

1,296,682

4/04/2006

690,311

06/20/2007

EMCOR

EUROPEAN UNION (CT)

PENDING

004986857

3/30/2006

EMCOR

UNITED ARAB EMR

REGISTERED

66590

1/18/2005

54490

07/19/2005

EMCOR & Design

CANADA

PENDING

1,296,605

4/4/2006

EMCOR & Design

EUROPEAN UNION (CT)

PENDING

004986733

3/30/2006

EMCOR & Design

UNITED STATES

REGISTERED

75/895,899

1/12/2000

2,562,923

4/23/2002

EMCOR SERVICE

UNITED STATES

REGISTERED

75/895,801

1/12/2000

2,575,099

6/ 4/2002

EMCOR. TAKING KIDSAFETY TO THE STREET

CANADA

REGISTERED

1,295,595

3/28/2006

692378

7/19/2007

EMCOR. TAKING KIDSAFETY TO THE STREET

EUROPEAN UNION (CT)

PENDING

004987012

3/30/2006

C-1

TRADEMARK

COUNTRY

STATUS

APP. NO.

FILED

REG. NO.

REGISTERED

EMCOR. TAKING KIDSAFETY TO THE STREET

UNITED STATES

REGISTERED

78/704,379

8/31/2005

3,202,939

1/23/2007

FACILITIES EDGE

EUROPEAN UNION (CTM)

REGISTERED

002361426

9/ 3/2001

002361426

7/29/2003

FACILITIES EDGE

UNITED ARAB EMR

REGISTERED

44904

10/30/2001

35083

12/10/2002

FACILITIES EDGE

UNITED STATES

REGISTERED

76/308,780

9/ 4/2001

2,751,080

8/12/2003

FACILITIES EDGE

SOUTH AFRICA

REGISTERED

2001/14991

8/29/2001

2001/14991

3/29/2006

FACILITIES EDGE

SOUTH AFRICA

REGISTERED

2001/14992

8/29/2001

2001/14992

3/29/2006

FACILITIES EDGE

SOUTH AFRICA

REGISTERED

2001/14993

8/29/2001

2001/14993

3/29/2006

FACILITIES SERVICES TO THE POWER OF E

EUROPEAN UNION (CTM)

REGISTERED

002347367

8/22/2001

002347367

7/29/2003

FACILITIES SERVICES TO THE POWER OF E

UNITED KINGDOM

REGISTERED

2278742

8/23/2001

2278742

8/23/2001

FACILITIES SERVICES TO THE POWER OF E

SOUTH AFRICA

REGISTERED

2001/13774

8/10/2001

2001/13774

3/15/2006

FACILITIES SERVICES TO THE POWER OF E

UNITED STATES

PENDING

76/296,634

8/ 8/2001

FE (stylized)

UNITED STATES

REGISTERED

76/297,396

8/ 8/2001

2,753,922

8/19/2003

FE (stylized)

UNITED KINGDOM

REGISTERED

2278750

8/23/2001

2278750

8/23/2001

FE (stylized)

SOUTH AFRICA

REGISTERED

2001/14231

8/17/2001

2001/14231

11/10/2006

FE (stylized)

EUROPEAN UNION (CTM)

REGISTERED

002348597

8/22/2001

002348597

7/29/2003

KNOWLEDGE IN ACTION

SOUTH AFRICA

REGISTERED

2001/12275

7/16/2001

2001/12275

12/12/2005

KNOWLEDGE IN ACTION

UNITED STATES

REGISTERED

76/197,324

1/19/2001

2,648,390

11/12/2002

KNOWLEDGE IN ACTION

OMAN

REGISTERED

25925

7/17/2001

25925

9/21/2005

KNOWLEDGE IN ACTION

OMAN

REGISTERED

25924

7/17/2001

25924

9/21/2005

KNOWLEDGE IN ACTION

EUROPEAN UNION (CTM)

REGISTERED

002302230

7/16/2001

002302230

12/15/2003

THE POWER OF E

EUROPEAN UNION (CTM)

REGISTERED

002347656

8/22/2001

002347656

7/29/2003

THE POWER OF E

UNITED KINGDOM

REGISTERED

2278743

8/23/2001

2278743

8/23/2001

THE POWER OF E

SOUTH AFRICA

REGISTERED

2001/13773

8/10/2001

2001/13773

3/15/2006

Trademarks and Trademark Applications: CES Facilities Management Services

TRADEMARK

COUNTRY

STATUS

APP. NO.

FILED

REG. NO.

REGISTERED

CES

UNITED STATES

REGISTERED

76,087,071

7/11/2000

2,583,464

6/18/2002

Trademarks and Trademark Applications: Fluidics, Inc.

TRADEMARK

COUNTRY

STATUS

APP. NO.

FILED

REG. NO.

REGISTERED

F & Design

CANADA

REGISTERED

745047

1/12/1994

455,787

3/22/1996

F & Design

UNITED STATES

REGISTERED

74/413,681

7/16/1993

1,895,331

5/23/1995

FLUIDICS

CANADA

REGISTERED

745063

1/12/1994

447,654

9/15/1995

C-2

TRADEMARK

COUNTRY

STATUS

APP. NO.

FILED

REG. NO.

REGISTERED

FLUIDICS

UNITED STATES

REGISTERED

75/975,919

7/16/1993

2,086,132

8/15/1997

FLUIDICS

UNITED STATES

REGISTERED

74/413,680

7/16/1993

2,085,139

8/5/1997

No other Debtor owns any intellectual property rights.

C-3

SCHEDULE D

INVESTMENT PROPERTY

INVESTMENTS			AMOUNT OF INVESTMENT		PAYEE OR HOLDER
1.	Colony Holdings Ltd.    (Bermuda)		60,000 shares —12% interest		Monumental Investment Corp.
2.	Baltimore Ravens		License (right) for 16 seats		The Xxxxx & Kent Corporation
3.	T.P.C. of Boston		$35,000 investment in country club membership		X. X. Xxxxxxx Corp.
4.	Cash Surrender Value of split dollar insurance policy		$1,229,000		Penguin Air Condition Corp.
5.	Cash Surrender Value of split dollar life insurance policy		$709,000		Xxxxxxxxx & Son, LP
6. F & G Mechanical Inc.         (New York)			90 shares – 45% interest		F&G Mechanical Corp.
7. C & H Services LLC			50% Interest		Xxxxxxxx Ltd.

SCHEDULE E

DEPOSIT ACCOUNTS

Deposit Accounts are set forth in the Side Letter.

- 1 -

SCHEDULE F

COMMERCIAL TORT CLAIMS

NONE

- 2 -