SECURITIES AND EXCHANGE COMMISSION
                               Washington, D.C. 20549

                                 -------------------

                                    FORM 8 - A

                 FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                      PURSUANT TO SECTION 12(b) OR (g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


                                   EMCOR Group, Inc.
- --------------------------------------------------------------------------------
               (Exact name of registrant as specified in its charter)

              Delaware                                      11-2125338
- ----------------------------------------              ----------------------
(State of incorporation or organization)                (I.R.S. Employer
                                                        Identification No.)

101 Merritt Seven Corporate Park, Norwalk, Connecticut         06851
- ------------------------------------------------------     -------------
 (Address of principal executive offices)                   (Zip Code)

   If this form relates to the             If this form relates to the
   registration of a class of securities   registration of a class of securities
   pursuant to Section 12(b) of the        pursuant to Section 12(g) of the
   Exchange Act and is effective           Exchange Act and is effective
   pursuant to General Instruction         pursuant to General Instruction
   A.(c), please check the following       A.(d), please check the following
   box.  |X|                               box:  |_|



Securities  Act  registration   file  number  to  which  this  form  relates:
Not Applicable


Securities to be registered pursuant to Section 12(b) of the Act:

    Title of Each Class                         Name of Each Exchange on Which
    To be so Registered                         Each Class is to be Registered
    -------------------                         ------------------------------

   Common Stock $.10 Par Value                 New York Stock Exchange

   Common Stock Purchase Rights                New York Stock Exchange
   with respect to Common Stock,
   $.10 Par Value




Securities to be registered pursuant to Section 12(g) of the Act:


                                      None
- --------------------------------------------------------------------------------
                                 (Title of Class)



Item 1.           Description of Registrant's Securities to be Registered


                  For a description of the Registrant's  Common Stock, par value
$.01 per share,  and its Common  Stock  Purchase  Rights  registered  hereunder,
reference is made to the information set forth under the heading "Description of
Capital Stock" in the Registrant's Prospectus Supplement,  dated March 12, 1998,
with  respect  to its Common  Stock,  which  supplements  its  Prospectus  dated
February 6, 1998, forming a part of the Registrant's  Registration  Statement on
Form S-3, as amended (File No.  333-44319),  filed under the  Securities  Act of
1933, as amended (the  "Registration  Statement"),  which  information is hereby
incorporated herein by reference.

Item 2.           Exhibits

                  1. Restated  Certificate  of  Incorporation  of the Registrant
                  dated December 14, 1994  (incorporated by reference to Exhibit
                  3(a-5) to the Registrant's  Registration  Statement on Form 10
                  as originally filed March 17, 1995)

                  2.   Amendment   dated  November  28,  1995  to  the  Restated
                  Certificate of Incorporation  of the Registrant  (incorporated
                  by  reference  to Exhibit  3(a-2) to the  Registrant's  Annual
                  Report on Form 10-K for the year ended December 31, 1995)

                  3.   Amendment   dated  February  12,  1998  to  the  Restated
                  Certificate of Incorporation  of the Registrant  (incorporated
                  by  referenced  to Exhibit  3(a-3)to the  Registrant's  Annual
                  Report on Form 10-K for the year ended December 31, 1997)

                  4. Rights Agreement dated March 3, 1997 between the Registrant
                  and the Bank of New York (incorporated by reference to Exhibit
                  1 to the Registrant's Form 8-K dated March 3, 1997)

                  5. Amendment and  Restatement to Credit  Agreement dated as of
                  December  22,  1992  among  the  Registrant,  certain  of  its
                  subsidiaries,  and Harris Trust and Savings Bank, individually
                  and as agent,  and the  Lenders  which  are or become  parties
                  thereto  (incorporated  by  reference  to  Exhibit  4.1 to the
                  Registrant's  Annual  Report on Form  10-K for the year  ended
                  December 31, 1998)

                                    SIGNATURES

                  Pursuant to the  requirements  of Section 12 of the Securities
Exchange Act of 1934, the Registrant has duly caused this registration statement
to be signed on its behalf by the undersigned, thereunto duly authorized.

                                           EMCOR GROUP, INC.


                                           By      /s/FRANK T. MACINNIS
                                           ----------------------------------
                                           Name:    Frank T. MacInnis
                                           Title:   Chairman of the Board
                                                 and Chief Executive Officer
Dated:  October 30, 2000