Helping You Stay Warm This Season

Get a start on your heating maintenance today!

Helping You Stay Warm This Season

Get a start on your heating maintenance today!

woman drinking tea in comfort.

Heating

From furnaces to heat pumps, stay comfortable when temperatures drop with heating services from Design Air.

Cooling

When temperatures rise in the warmer seasons, Design Air can help your family stay cool with air conditioning, heat pump, and other services for your home.

technician talks to homeowner about air conditioner.
photo of ductless unit with ductless remote.

Ductless

A ductless heating or cooling system can be a great option over a traditional system. Learn about the flexible and affordable options ductless provides.

Maintenance

Save time and money with regular maintenance on your HVAC systems. Design Air can help you with a variety of maintenance options for your home.

AC maintenance technican making notes.
woman drinking tea in comfort.

Heating

From furnaces to heat pumps, stay comfortable when temperatures drop with heating services from Design Air.

technician talks to homeowner about air conditioner.

Cooling

When temperatures rise in the warmer seasons, Design Air can help your family stay cool with air conditioning, heat pump, and other services for your home.

photo of ductless unit with ductless remote.

Ductless

A ductless heating or cooling system can be a great option over a traditional system. Learn about the flexible and affordable options ductless provides.

AC maintenance technican making notes.

Maintenance

Save time and money with regular maintenance on your HVAC systems. Design Air can help you with a variety of maintenance options for your home.

Need HVAC Service?

Contact the experts at Design Air.

Call us at 406-251-7997!

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Design Air
With more than 26 years in the heating and cooling business, Design Air is dedicated to providing the best possible service for you and your family. You can count on us to provide you with a system and solution that fits your family’s unique needs. No matter if you are in need of a repair, replacement, annual maintenance, or an entire HVAC system for a new home, the team at Design Air is here to help.

★★★★★

See What Our Customers Are Saying

Ductless Mini-Split Installation in Frenchtown, 59846

“Design air installed one mini split for us this last summer, and it went flawlessly. We had them install another on January 3rd, with Dave and Eastyn doing a great job. This was a different story. The unit had a faulty service valve. They ordered a new valve, but after installation, the unit was *still* faulty, with a bad EEV control board. Liz felt terrible about our user experience, and arm wrestled Bryant to furnish an entirely new unit, which just got installed on the 22nd, and has functioned perfectly. We found Liz to be dedicated to fabulous customer service and excellent user experience. I recommend DesignAir highly and without reservation. They will absolutely take care of you.”
- Paul S.

Gas Furnace Replacement in Missoula, 59802

“From start to finish Design Air took care of us! Liz was amazing to work with to find the right replacement option and financing for us. We were quickly scheduled after this was decided. Eastyn and David were very professional and able to install our new furnace in a days work. Very thankful and appreciative to them all!”

- LynDee B.

Gas Furnace Maintenance in Missoula, 59803

“Nate was very efficient on time and amazingly friendly. He was very clear of what needs to happen. Going forward on maintenance as we just bought this home to keep everything up and running. We will definitely call him again.”

- Jamie G.

Read Our Latest Articles

Older couple sitting in front of a fire drinking hot chocolate from mugs.

How to Keep Warm During Extreme Cold Weather

February 14, 2025

In this extreme cold, your heating system will struggle to return to where you originally had it set.

Read More
Humidity water droplets on window.

Why You Need Whole-House Humidity Control

January 24, 2025

Design Air wants to help you understand humidity levels and how to control them for improved comfort and better overall health.

Read More
Smiling brother and sister relaxing and using smart phone while laying in living room nook corner with winter in the background outside.

Is My Furnace Overheating?

January 15, 2025

Remember, if your system gets too hot, you should keep a cool head and get your furnace taken care of right away.

Read More