Brennan Heating & Cooling Inc

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.