Geothermal.contractors

Hartzell's Heat & Air is a locally owned geothermal contractor based in Kingfisher, Oklahoma, serving central Oklahoma and traveling statewide for geothermal projects. Founded around 2011, the company is led by owner Dave Hartzell, who holds an Oklahoma Master HVAC License (#00115936), NATE certification, and roughly 45 years of personal HVAC experience. Hartzell's specializes in closed-loop geothermal heat pump installations engineered for Oklahoma's ground temperatures of 59-62°F, with Manual J load calculations and loop-field design matched to local soil conditions. The company is a ClimateMaster GeoElite Dealer and a WaterFurnace dealer, and also installs Trane, Mitsubishi, Daikin, Carrier, American Standard, and Bosch equipment. It helps customers pursue Oklahoma utility rebates through rural electric cooperative partnerships such as CKenergy and Canadian Valley. Beyond geothermal, the team provides ductless mini-splits, conventional HVAC replacement, indoor air quality solutions, and 24/7 emergency service. Verified active operator per hartzellsheatair.com (homepage + about + geothermal pages) (OK bundle audit 2026-06-01)