t Big Sky Heating & Cooling ,our goal is to leave our Billings clientele with the peace of mind that comes from knowing that their Heating, Ventilation, and Air Conditioning (HVAC) system is installed and running at peak efficiency year round. No matter what services you might needfrom comprehensive air conditioner installation, repair and maintenance, to heat pump installation and servicing, to the use of top-of-the-line UVC air purifiers to keep your air healthy and cleanat Big Sky Heating & Cooling you get a combination of knowledge, honesty and professionalism that you simply won't find anywhere else in the greater Billings area.