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 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.

For over 20 years, Great Falls Heating & Air Conditioning has provided reliable HVAC service to the Great Falls, MT community from our location at 1306 15th St S. Our certified technicians specialize in the installation, repair, and maintenance of furnaces, air conditioners, and heat pumps. We offer 24/7 emergency repair services to restore your comfort quickly. Trust our team for comprehensive indoor air quality solutions, including air duct cleaning and the installation of air purifiers and humidifiers. We are committed to providing honest, upfront pricing and quality workmanship on every job. For professional HVAC service from a local company you can trust, call Great Falls Heating & Air Conditioning.