Geothermal.contractors

National Heating & AC has served Greater Cincinnati for over 80 years with NATE-certified technicians and a dedicated geothermal service practice. The company installs, repairs, and maintains geothermal systems using horizontal and vertical closed-loop configurations that leverage the earth's constant underground temperature for efficient year-round comfort. Services span new installation, equipment replacement, and routine maintenance including refrigerant checks, air handler cleaning, and filter changes. National provides 24/7 emergency HVAC service. Verified active operator per nationalheatingandac.com (Ohio import 2026-05-30)