We affectionately refer to it as “The Mile High City,” and that altitude makes for some interesting temperature fluctuations. High Efficiency Heating and Air Conditioning stands ready to help you deal with the implications that our altitude has on your home or business comfort. The Queen City of Denver is the most populous county of Colorado, with many older homes. High Efficiency Heating and Air Conditioning has the expertise and experience to assist in HVAC-related remodeling projects in your Denver area home, and we’re trusted and called upon by many area remodeling contractors and homeowners alike. We are trusted in furnace replacement, furnace repair, and new furnace installation. We also take pride in expert boiler repair, boiler maintenance, and boiler installation. Whether your home or business is air conditioned or not, we can install a new efficient system to guarantee comfort. We also offer expert air conditioner maintenance and air conditioner repair for your existing system. All of our services carry a 100% guarantee, and we are A+ BBB rated!