Commercial air conditioner roof installation

Our Long Mechanical division has proven experience in handling small- and large-scale commercial HVAC projects. Our highly trained technicians and tradesmen work throughout the Midwest installing, maintaining and repairing a wide range of heating & cooling systems in a variety of building environments. Throughout each job, high quality workmanship and following safety protocol are top priorities.

Heating and Cooling Systems & Repairs for Commercial and Industrial Facilities

When it comes to commercial heat installations and commercial refrigeration systems, you can rest easy knowing that our professional technicians are well equipped with the knowledge, experience and latest technology to keep your facility systems running smoothly so you can focus on your business.

Long Mechanical has built a reputation on providing cost-effective and reliable solutions for commercial HVAC customers in a wide variety of industries and settings. We service, install and repair everything from rooftop heating and cooling units to walk-in coolers. And we’re proud to say that our customers are quick to refer us for our superior service.

Services & Equipment
Commercial HVAC Systems

  • Rooftop Heating & Cooling Units
  • Makeup Air Systems
  • Ventilation Systems
  • Furnace & A/C Split Systems
  • Mini Split Systems
    (For Server/Data Rooms)
  • Mini Splits, Single & Zoned Systems
  • Boilers, Hydronic & Steam Systems
  • Chillers & Cooling Towers
  • Radiant Floor Heating Systems
  • Gas, Air & Refrigerant Piping
  • Walk-in Coolers
  • Temperature Controls

Installation & Equipment

Experienced in a variety of commercial heating and cooling systems, from rooftop units to mini splits, boilers to chillers, count on the HVAC professionals at Long Mechanical. We carry energy-efficient commercial-grade heating, air conditioning, ventilation and refrigeration equipment from top manufacturers.


Regular systems inspections, plus planned and preventative maintenance performed by Long Mechanical's certified technicians will keep your commercial HVAC systems in top working order to ensure continued operation. Regular maintenance can save you money in the long run by adding years of life to your equipment, reducing down-time and avoiding emergency repair costs.

We also install and provide annual testing of Backflow Preventers. Annual testing is required by local communities; we have State Certified Testers on staff.


When equipment breaks or systems fail, count on Long Mechanical's quick response team to get things working again as soon as possible. Emergency repair service available 24/7.

Get to Know Us
Reliable & Trustworthy

Our goal is a satisfied customer and based on our repeat business and client testimonials, we are doing things right. Our customers recommend us for our exceptional quality, competitive pricing, integrity and attentive customer service.

Featured Projects

Just a few examples of our work to showcase our commercial HVAC capabilities.

Interior commercial heating and cooling installation
Relocation of HVAC unit during manufacturing plant renovation.
HVAC installation and renovation at Detroit Metro Airport.
HVAC installation and renovation at Detroit Metro Airport.
radiant floor heating piping
Radiant floor heating installation in Washtenaw County.
HVAC installation at University of Detroit required roof opening
HVAC installation at University of Detroit required roof opening.
Removing religious sculpture from building with crane through roof opening
During installation we discovered a sculpture lost in the attic for 60 years!
Reclaimed Sculpture of Mary and Jesus surrounded by U of D staff.
U of D staff were grateful to our crews for safely removing the sculpture.

Quality Brands We Carry

Bryant Logo
Daikin Logo
Fujitsu Logo
Goodman Logo
Mitisibushi Logo
Trane Logo

Commercial Clients Include

Detroit Deisel Logo
Detroit Deisel Logo
Detroit Deisel Logo
Detroit Deisel Logo
Detroit Deisel Logo
Detroit Deisel Logo
Mercedes-Benz Logo

Ready to quote your commercial HVAC project? Call 248‑349‑0373

Copyright © 2009 Long Mechanical, Inc. & Long Plumbing Co.
Serving Southeast Michigan and other Midwest States