Advanced Heat Pump Systems Inc. is located in Johnson City, TN, and we are a full-service air conditioning and heating contractor. We do 24-hour emergency service on all brands of equipment, and we specialize in geothermal heating and air conditioning equipment as we are one of the largest suppliers in this area. Services and products we offer include:Sales, Installation, Gas and electric, Heating and cooling, Residential and commercial, 24-hour emergency assistance. We service all brands. We also do preventative maintenance to prevent those unexpected problems. We accept all major credit cards. Call Advanced Heat Pump Systems Inc. for all your heating and air conditioning needs today.