Did you know that choosing the right heating and cooling company in Missoula County is just as important as the furnace itself?
At Design Air, we make sure your new furnace isn’t just installed—it’s installed right.
Proper installation goes far beyond placing a unit in your home. It means making sure your furnace is the right size, properly matched to your ductwork, and expertly calibrated for peak efficiency, comfort, and long-term performance.
An oversized or undersized furnace—or one paired with incompatible ductwork—can cause uneven heating, increased energy costs, and premature system failure. That’s why our experienced team takes the time to assess your space, walk you through your options, and recommend a solution tailored specifically to your home.
We never take shortcuts. Every installation is performed with precision and care, so you get a system that runs quietly, efficiently, and reliably—season after season.
With Design Air, you're not just getting a furnace. You're getting a custom-fit comfort solution you can count on.
Call or text us at 406-251-7997 for a free furnace installation quote!
Why Choose Design Air for Furnace Installation?
Estimates
- Friendly
- Flexible Estimate Scheduling; Relevant Equipment Options; Energy efficiency focused
- Custom designed system for client's needs
- Upfront pricing with no hidden costs
- A Home Comfort Advisor who focuses on the full HVAC part of your project
Installation
- Quality install craftsmanship
- Work done to city/county mechanical codes
- Respect of the work area
- Project communication focused
- Final walk though of new system
- Enhanced lifetime installation workmanship guarantee
How Long Will a New Furnace Last?
Your new furnace should operate efficiently for 15 to 20 years, provided you keep up with furnace maintenance. If your furnace is within this range, you could benefit from replacing it now.
With a newer, more efficient model, you will save on energy use and reduce your utility bills. Plus, you can enjoy better indoor air quality (IAQ) and reduce your carbon footprint.
Worried about equipment pricing? Don’t be! Our professionals have solutions—we offer plenty of financing options to support any budget. Contact us for more information to get started today.
How Long Does It Take to Install a Furnace?
At Design Air, the time it takes to install or replace your furnace depends on the unique needs of your home.
Factors such as the condition of your existing system, accessibility, and whether additional work—such as ductwork repairs or upgrades—is needed can all affect the timeline.
No matter the scope, our team works efficiently while never compromising on quality or safety. We take the time to do the job right, ensuring your new system is properly installed, thoroughly tested, and built to deliver long-lasting comfort.
How Will I Know When I Need to Replace My Furnace?
If your heating system is nearing the end of its lifespan, running inefficiently, or constantly needing repairs, it may be time to consider a replacement—before it leaves you without heat when you need it most.
Waiting until your furnace completely breaks down can lead to rushed decisions and unexpected costs. Planning ahead gives you time to explore the best options for your home and budget.
Upgrading to a newer model is a smart investment. You’ll enjoy improved comfort, lower energy bills, and the added peace of mind that comes with a brand-new warranty.
Still unsure if it’s time? Let our experts at Design Air take a look. We’ll provide a straightforward, honest assessment—no pressure, just guidance—so you can make the right decision for your home and family.
How Much Money Can a New Furnace Save You?
Our AFUE energy savings calculator can help determine how much you could save on your utility bills. Enter your current unit’s AFUE value and compare it to a newer, more efficient system.
AFUE Energy Savings Calculator
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Customize to Your Home
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** Data from U.S. Energy Information Administration
*** Data from 2002 EPA study
** Data for Canadian cities from nrcan.gc.ca
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Call Your Furnace Installation Experts Today
Whether you need brand-new furnace installation or replacement in Missoula County for your Missoula, MT, home, Design Air is a local company you can rely on. Call or text us today at 406-251-7997 or request service online for a free consultation.
Need Furnace Installation Service?
Call us at 406-251-7997!
- Sharon S.
“September. Fall is in the air, back yard apples are about ready to be picked, and … annual maintenance for furnace and air conditioner. Thanks Design Air and Kyler for your reliability and good service.
John and Valerie”
- John H.
“Swede and I were concerned that Mark would no longer be providing maintenance for our furnace and AC unit. However, Nate was here today and did an excellent job. He's friendly, efficient and careful to explain everything to us. Good experience!
Carol Anderson”
- Carol A.
“Morgan was very professional. Answered all of my questions and cleaned up before he left. I would definitely recommend him and hire him again in the future.”
- Jeanie H.
“We have used Design Air for decades and have a yearly maintenance for our Hi-eficiency furnace and gas fireplace. Kyler does a thorough job of each and patiently answers all my questions and shows me how to check my filter or adjust the fireplace as needed.”
- Shannon K.
“Kyler is always professional and does great work. Very reliable. Thanks.”
- Peter D.
“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.
“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.
“Eastyn & David did an excellent job installing our furnace. Professional &
Pleasant.”
- Beverly W.
“Easton and Matt B. did an excellent job with our furnace installation. Efficient, courteous and patiently answered all our questions.”
- Robert E.