| Altech Mechanical Service | 
| Contact: | Mark Winchester | 
| E-Mail: | mark.w@altechmechanical.com | 
| Alt. Contact: | Jordan Richer | 
| Alt. E-Mail: | jordan.altech@gmail.com | 
| Address: | 7885 Jackson Rd. Suite 4 Ann Arbor, MI 48103
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| Phone: | (734) 669-6100 | 
| Fax: | (734) 424-9529 | 
| Website: | http://www.altechmechanical.com | 
| Services: | Commercial Facilities Only for 24/7 Heating and Cooling | 
    
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        | Boone & Darr, Inc. | 
| Contact: | Jeff Darr | 
| E-Mail: | jeff@boone-darr.com | 
| Address: | 4465 S. State St. P.O. Box 1718 Ann Arbor, MI 48106
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| Phone: | (734) 665-0648 | 
| Fax: | (734) 665-9731 | 
| Website: | http://www.boone-darr.com | 
| Services: | Commercial Facilities Only for 24/7 Heating and Cooling | 
    
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        | Campbell, Inc. | 
| Contact: | Keith Campbell | 
| E-Mail: | keith@campbellinc.com | 
| Address: | 1077 James L. Hart Parkway Ypsilanti, MI 48197
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| Phone: | (734) 769-1190 | 
| Fax: | (734) 769-6306 | 
| Website: | http://www.campbellinc.com | 
| Services: | Commercial Facilities Only for 24/7 Heating and Cooling | 
    
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        | CMR Mechanical | 
| Contact: | Clare Racine | 
| E-Mail: | info@cmrmechanical.com | 
| Address: | 3611 Central St. P.O. Box 486 Dexter, MI 48130
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| Phone: | (734) 424-1560 | 
| Fax: | (734) 424-9755 | 
| Website: | http://www.cmrmechanical.com | 
| Services: | Residential and Commercial for 24/7 Heating and Cooling | 
    
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        | Haley Mechanical | 
| Contact: | Henry Haley | 
| E-Mail: | hhaley@haleymechanical.com | 
| Address: | 8415 Dexter Chelsea Rd. Dexter, MI 48130
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| Phone: | (734) 424-9170 | 
| Fax: | (734) 424-9173 | 
| Website: | http://www.haleymechanical.com | 
| Services: | Residential and Commercial for 24/7 Heating and Cooling | 
    
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        | Hutzel Plumbing & Heating | 
| Contact: | Dave Dion | 
| E-Mail: | ddion@hutzelcompany.com | 
| Address: | 2311 S. Industrial Highway Ann Arbor,    48104
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| Phone: | (734) 665-9111 | 
| Fax: | (734) 665-9238 | 
| Website: | http://www.hutzelplumbing.com | 
| Services: | Residential and Light Commercial for 24/7 Heating and Cooling | 
    
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        | John E. Green Company | 
| Address: | 2453 S. Industrial Hwy Ann Arbor, MI 48104
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| Phone: | (313) 868-2400 | 
| Fax: | (313) 867-0285 | 
| Website: | http://www.johnegreen.com | 
| Services: | Commercial and Industrial for 24/7 Heating and Cooling | 
    
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        | Nexion | 
| Contact: | Spencer Travis | 
| E-Mail: | spencer@nexionhvac.com | 
| Address: | 1101 S. Main St. Ste. 100 P.O. Box 10 Chelsea,    48118
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| Phone: | (734) 660-7042 | 
| Website: | http://www.nexionhvac.com | 
| Services: | H.V.A.C. Commercial Service | 
    
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        | Practical Mechanical | 
| Contact: | Gino Venditti | 
| E-Mail: | ginopracticalm@gmail.com | 
| Address: | 5540 Thomas Rd. Ann Arbor, MI 48108
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| Phone: | (517) 499-8761 | 
| Services: | HVAC Service, new install | 
    
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        | Robertson Morrison, Inc. | 
| Contact: | Brent Johnson | 
| E-Mail: | brent@rob-mor.com | 
| Address: | 4721 Runway Blvd. Ann Arbor, MI 48108
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| Phone: | (734) 662-3141 | 
| Fax: | (734) 662-6084 | 
| Website: | https://www.rob-mor.com/ | 
| Services: | Residential and Commercial for 24/7 Heating and Cooling |