It’s not just that Altitude Comfort is the #1 most highly rated heating and air conditioning repair and installation company in Denver, COthey also offer discriminating homeowners every type of HVAC repair and installation service they could need. Their techs can repair most every type of furnace, air conditioner, swamp cooler, and they even provide duct cleaning services. Open 7 days from 7:00AM- 10:00PM.