Arapahoe boasts about being Colorado’s first county—that’s a great deal of history! While Littleton holds the county seat, 12 other municipalities comprise our oldest county. High Efficiency Heating and Air Conditioning provides 100% guaranteed, expert HVAC service for our neighbors with homes and businesses in Aurora, Bow Mar, Centennial, Cherry Hills Village, Columbine Valley, Englewood, Foxfield, Glendale, Greenwood Village, Littleton, and Sheridan. We are proud to have earned A+ BBB ratings in Arapahoe County for expert furnace repair, furnace maintenance, and furnace installation, as well as boiler repair, boiler maintenance, and boiler installation. If you’re dreading the hot summer, call High Efficiency Heating and Air Conditioning for highly-experienced service in air conditioner repair, air conditioner maintenance, and new air conditioner installation. Our trusted team is experienced in snowmelt systems, too, saving your back from all of that winter shoveling!