High Efficiency is proud to be a Factory Authorized Carrier dealer serving Parker, Douglas County and the greater Denver area with NATE-certified heating and air conditioning system installation, maintenance and repair. We are locally- and family-owned since 2005 and have emergency service 24 hours a day. In addition to traditional heating and cooling services, we offer whole house humidifier, snow melt, and geothermal system installation, maintenance, and repair.