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All Season Heating & Air Conditioning
All Season Heating & Air Conditioning, LLC is a family-owned HVAC company. We have been in business in the Helena area since 1984 and in 2010 we opened our doors in Shelby, Montana. We have a great team of local technicians ready to serve the Hi-Line area, managed by Peder Underdal. Our employees are experienced, trustworthy, and honest tradesmen.

We are ready to meet your needs in a timely professional manner, to your satisfaction, and at a fair price. We offer free estimates for new construction and replacement of older equipment. We also offer a Preventive Maintenance Program which gives you the benefit of regular inspections on your furnace and air conditioner, and the peace of mind that comes from spotting potential problems before they cause trouble.
Services
We offer a preventive maintenance program which gives you the benefit of regular inspections on your furnace and air conditioner. Enjoy the peace of mind that comes with regular periodic inspection, lubricating, adjusting, safety testing and cleaning of your heating and cooling system. Regular maintenance keeps your system running at its peak performance and allows for potential problems to be spotted before they cause trouble.
We can install gas or propane fired furnaces to heat the air in your home or commercial space. We feature equipment from Lennox, Mitsubishi, Heil, Williams, GeoComfort and Napoleon to name a few. We approach each job as a problem to be solved, rather than relying on a one-size-fits-all "cookie-cutter" solution.
At All Season Heating & Air Conditioning, we will design, install and maintain a custom centralized system for your home or office. We feature central air and duct-less systems from quality manufacturers like Lennox and Mitsubishi. Using sophisticated load-analysis computer software, we will zone your space to provide a solution that is energy-efficient and comfortable.
To help keep your interior environment hypo-allergenic, we install and maintain a variety of air quality components, including electronic and media-based cleaning systems and ultraviolet mold irradiators. These can significantly minimize the presence of viruses, dust, smoke, and other unwanted particles in your home.
Your own backyard has the potential to be an energy source for heating and cooling comfort. Outdoor air temperatures fluctuate throughout the year with the changing seasons. In contrast, ground temperatures about four to six feet below the Earth's surface remain relatively moderate and constant all year.
Reviews (5)
Don Mullin
Don Mullin
Oct 27, 2021
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Had our heating systems ducts cleaned along with our dryer vent The service tech was very professional and knowledgeable about his work. Thank you for the great service and hope you offer a disabled veteran/senior discount
Chris Reynolds
Chris Reynolds
Oct 08, 2021
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We had All Seasons H&A install a new furnace and air conditioner. Their installers were very good and the job was completed well.
Alison Burlingame
Alison Burlingame
Aug 27, 2021
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We asked for a quote …. For them to install air conditioning and to fix the furnace in the garage. They never gave us a quote on either. They said the fan was out on the furnace (we knew this). They then ordered the wrong part for the fan - which they “tried” to fix. They then said they couldn’t fix the furnace and said we would have to buy a new one . They charged us 157$ and didn’t accomplish anything - still haven’t given us a quote for the air conditioning .. I will not use this company again.
Crissy Bauman
Crissy Bauman
Dec 20, 2020
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When my furnace went out last winter, and the temp in my house went down into the 30's, they showed up right away and managed to get the heat going again. They even offered to loan me some space heaters until the needed part came in and the furnace could be fixed "for good."
Teresa Kelleher
Teresa Kelleher
Jun 22, 2020
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Excellent service. Will definitely be calling on them again. Kent Montgomery was my serviceman. He walked me through what needed to be done and made the repairs right away. Im very pleased with the work done. The office personnel was extremely helpful in scheduling and making connections since I needed to travel to be there. Thank you All Seasons Heating.