1
 
                                                                    EXHIBIT 23.1
 
                        CONSENT OF INDEPENDENT AUDITORS
 
     We consent to the use of our report dated May 5, 1996, except for the first
paragraph of Note 1 and the second and third paragraphs of Note 11, as to which
the date is November 14, 1996 with respect to the financial statements of
Service Experts, Inc., (formerly AC Service & Installation Co. Inc. and Donelson
Air Conditioning Company), the use of our report dated November 8, 1996 with
respect to the financial statements of Falso Heating and Sheet Metal Co., Inc.,
the use of our report dated October 11, 1996 with respect to the combined
financial statements of Pardee Refrigeration Company, Incorporated, Island Air
Conditioning, Inc. and Sanders Indoor Comfort, Inc., the use of our report dated
November 8, 1996 with respect to the financial statements of Frees Service
Experts, Inc., the use of our report dated November 8, 1996 with respect to the
financial statements of Custom Air Conditioning, Inc., the use of our report
dated May 24, 1996 with respect to the financial statements of Gordon's
Specialty Company, Inc., the use of our report dated November 1, 1996 with
respect to the combined financial statements of Dial One Service Champions, ET
AL., the use of our report dated November 6, 1996 with respect to the financial
statements of Comfortech, Inc., the use of our report dated November 6, 1996
with respect to the financial statements of Air-Conditioning and Heating
Unlimited, Inc., the use of our report dated October 25, 1996 with respect to
the financial statements of The 1589 Niagara Street Corporation, the use of our
report dated November 7, 1996 with respect to the financial statements of
Freschi Air Systems, Inc., the use of our report dated November 7, 1996 with
respect to the financial statements of Parker Heating & Air Conditioning,
Incorporated, the use of our report dated October 29, 1996 with respect to the
financial statements of B. W. Heating & Cooling, Inc., the use of our report
dated November 8, 1996 with respect to the financial statements of B & B Air
Conditioning, Inc., the use of our report dated October 29, 1996 with respect to
the financial statements Sylvester's Corp., the use of our report dated October
29, 1996 with respect to the financial statements of Automated Air, Inc. and
Bauer Heating & Air Conditioning, Inc., the use of our report dated November 11,
1996 with respect to the financial statements of Gaddis Co., the use of our
report dated November 11, 1996 with respect to the financial statements of
Quality Air Conditioning & Heating of West Monroe, Inc. in the Registration
Statement (Form S-4) and related Prospectus of Service Experts, Inc. related to
$50,000,000 aggregate amount of shares of its $.01 par value common stock,
warrants to purchase its common stock ("Common Stock Warrants") and the shares
of its common stock issued thereunder upon the exercise of such Common Stock
Warrants, or debt securities ("Debt Securities"), and the shares of Common Stock
issued thereunder upon the conversion thereof.
 
                                          Ernst & Young LLP
 
Nashville, Tennessee
November 18, 1996