HVAC Systems

Whether it’s a plan and spec, custom project or an HVAC replacement, service or upgrade, McDowall Company’s expert, certified technicians will work with you during every step of your project. We’ll be there to answer your questions, address your concerns and provide proven recommendations to ensure cost effective, reliable, and comfortable environments.

Need HVAC Service?
We maintain and repair HVAC systems of all sizes and brands


McDowall Company has been installing heating, ventilating and air conditioning (HVAC) systems for industrial, commercial, healthcare, municipal, and education facilities since 1960. We provide HVAC systems through the use of plans and specifications developed by others (plan/spec method) or by custom designing a system for the customer’s needs and applications (design-build method).

Whether it is a plan/spec or a design/build type project, our correct comprehensive assessment of our customer’s needs, intelligent system design, informed manufacturers’ selection, precise installation and experienced maintenance capabilities have made us a leader in the industry.


At McDowall Company our mission is to ensure that those who work for us, return home safely every day. Our focus is to deliver best-in-practice solutions that meet or exceed OSHA standards, protect our workers and minimize building owner liability.

McDowall Company is well known for installing high quality HVAC systems. Because of our experienced workforce, well-equipped in-house fabrication plant, and our skilled tradesmen, each installation will deliver years of reliable service. From fabrication of sheet metal to installation of ductwork and equipment, the McDowall Company method consistently results in cost-effective, reliable and comfortable environments.

McDowall Company is a proud member of the Sheet Metal and Air Conditioning Contractors National Association (SMACNA), the Mechanical Contractors Association of America (MCA), and other associations.

Intelligent Comfort
Effortlessly staying current on regular upkeep

Routine, scheduled tune ups are necessary to help make your HVAC systems more economical, save on energy costs, boost efficient operations, and extend your system’s lifespan.

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Brands we service

Client testimonials

“I have been using McDowall for many years at a previous location. So, when we opened our new store, there was no hesitation to who I would have perform our HVAC preventive maintenance. Jeff and Tommy have been excellent in their attention to detail and communication. “

Kevin Prettyman, Twin Cities Performance Ferrari

My staff and I were very pleased with the flawless installation and customer service provided by McDowall and their staff.

Dr. John Collier, Stone Gate Dental, GPS Install

I am very happy with everyone I come in contact with from McDowall, thank you for such great service!

Terry Sullivan, City of Mendota Heights, HVAC customer

McDowall hits a home run with service.” 

Melissa Peterson, Initiative Foundation, HVAC customer

The service with McDowall Company is pretty darn good.

JP Wright, Buffalo Civic Center

An experienced team of
Comfort specialists