Design Air, Inc.
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Claim This BusinessAbout Design Air, Inc.
Design Air, Inc. operates as an air conditioning and full HVAC contractor serving Missoula and the Bitterroot valley in western Montana. With 87 verified customer reviews averaging 4.6 stars, the company has established a measurable track record in the local market. Their service menu spans residential heating systems, cooling equipment, heat pump technology, and indoor air quality solutions including Aeroseal duct sealing. The business maintains standard weekday hours of 8 AM to 5 PM, closed on weekends, which aligns with typical residential contractor availability in the Missoula metro area.
What distinguishes Design Air from regional competitors centers on their brand partnerships and approach to system selection. As a dealer for both Bryant and cobee product lines, they offer equipment options spanning multiple price points and efficiency ratings. Their financing programs enable homeowners to manage larger equipment replacements without immediate full payment. The company also handles new construction and remodeling projects, positioning them beyond . This breadth allows single-vendor solutions for homeowners undertaking home additions or complete system upgrades.
Customer narratives pulled from public reviews reveal consistent themes around technician communication and problem-solving tenacity. Kyle Trebotich's account describes a complex heat pump installation requiring coordination with an existing gas furnace, where the team invested additional diagnostic time without charge. Reviewer Mark McClements documented a same-day consult visit from Mike and Brett, followed by a single-day furnace and AC installation performed by Corey E's crew. Several reviewers specifically credit technicians Nate and Kyler with thorough explanation of service work, suggesting a company culture emphasizing technical transparency for homeowners unfamiliar with HVAC diagnostics.
What Customers Say
Five-star reviews dominate the 87-review sample, with recurring mentions of professional technician communication. Multiple customers reference specific staff members including Mike, Brett, Corey, Nate, and Kyler by name. Review themes cluster around thorough explanations, on-time arrivals, and problem resolution on older or problematic equipment.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| ThursdayToday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Services
Heating System Installation, Repair & Maintenance
-gas furnace and gas fireplace services covering new installations, annual tune-ups, and diagnostic repairs for failing equipment.
Heat Pump Services
full heat pump installation, maintenance, and repair including dual-fuel setups that supplement existing gas furnaces.
Air Conditioning Installation, Repair & Maintenance
traditional split system AC installation and summer cooling maintenance to prevent mid-season failures.
Ductless Mini-Split Systems
flexible heating and cooling solutions for home additions, garages, or zones where traditional ductwork proves impractical.
Indoor Air Quality & Aeroseal Duct Sealing
advanced duct sealing technology to reduce leakage and improve overall system efficiency throughout the home.
New Construction & Remodeling HVAC
complete system design and installation for new builds and renovation projects requiring HVAC infrastructure.
Commercial Heating & Cooling
light commercial services for smaller business properties needing heating and cooling system installation or maintenance.