For over 40 years, Brennan Heating & Cooling Inc has provided reliable HVAC service to Great Falls and the surrounding areas. Located at 815 21st St NW, our expert technicians specialize in heating and air conditioning installation, repair, and maintenance. We service all brands of furnaces, heat pumps, and air conditioners to ensure your home's comfort year-round. Our team also offers indoor air quality solutions, including air filtration and humidifier services. Available 24/7 for emergencies, we are committed to prompt, professional service backed by a 100% satisfaction guarantee. Trust Brennan Heating & Cooling for all your home comfort needs.

For over 40 years, AT Klemens has provided reliable HVAC service to Great Falls and surrounding areas. Our local team offers comprehensive heating and cooling solutions, including installation, repair, and maintenance for furnaces, air conditioners, and heat pumps. We are authorized dealers for top brands like Lennox and Carrier. Our NATE-certified technicians also specialize in indoor air quality systems, thermostats, and duct cleaning services. Committed to your comfort, we provide straightforward pricing and 24/7 emergency repairs. Trust your home's climate to our experienced professionals at 814 12th St N.

For over 30 years, Gill's Heating & Cooling, Inc. has provided reliable HVAC service to Great Falls, MT. Located at 315 4th St S, their skilled technicians specialize in heating and cooling installation, repair, and maintenance for all brands. They offer 24/7 emergency repair services, system replacements, and preventative maintenance plans to ensure year-round comfort. The company handles everything from furnaces and air conditioners to heat pumps, air quality systems, and thermostats. As a Carrier Factory Authorized Dealer, they provide expert installation of high-efficiency equipment. Trust their NATE-certified team for professional, upfront service on your home's heating and cooling systems.