Ann Arbor
Boone & Darr Inc.
(734) 665-0648

Bronson Heating & Cooling
(734) 662-9993

Fuller Heating Company
(734) 665-8651

John E. Green Company
(734) 747-8820

Robertson - Morrison
(734) 662-3141

Battle Creek
Smith-Hammon Piping
(616) 962-9536

Clinton Twp.
Metro Environmental
(586) 790-2500

Western Mechanical Contractors
(586) 790-0900

Dearborn
Great Lakes Mechanical
(313) 581-1400

J.A. Marble Company
(313) 277-9098

McKenna Heating & Cooling
(313) 581-7600

Detroit
Ideal Heating Company
(313) 521-2130

Kropf Service Company
(313) 838-3800

Metro Industrial
(313) 872-3348

Dexter
John Darr Mechanical, Inc.
(734) 424-9934

Farmington Hills
Limbach Service
(248) 472-0600

Mortz Bros. Corp.
(248) 478-2090

The Trane Company
(248) 477-0500

Flint
Goyette Mechanical Company
(810) 742-8530

William E. Walter Inc.
(810) 232-7459

Flushing
Air Tech Inc.
(810) 230-6202

Grand Rapids
B & V Mechanical
(616) 243-7222

Holweda-Huizinga Company
(616) 974-1050

Refrigeration Engineering Inc.
(616) 453-2441

Grosse Isle
Bruce A. Rykskamp
(734) 692-0797

Holly
Dee Cramer, Inc.
(810) 579-5000

Howell
Vanguard Energy Services
(517) 545-1969

Kalamazoo
Stafford-Smith Inc.
(616) 343-1240

Lansing
T.H. Eifert Inc.
(517) 484-9944

Livonia
Ehlers, Erv Company
(248) 442-8500

W.J. O'Neil Company
(734) 458-2300

Royal Oak
J.B. Cain Company
(248) 549-2722

St.Joseph
City Plumbing & Heating Co.
(616) 983-6595

Southfield
Brines Refrigeration
(248) 423-9680

S & M Heating Sales Company
(248) 352-4656

Sterling Heights
Bumler Mechanical
(586) 731-0020

Westland
Pace Mechanical Services
(734) 595-8300

Traverse City
ABI Mechanical
(231) 943-4114