15+ years • 6,500+ jobs completed • 1,500+ Oklahoma homes served

HVAC Service Areas, Central Oklahoma

I’m Dave Hartzell. Hartzell’s Heat & Air is based in Kingfisher, Oklahoma, and I serve homeowners and businesses throughout central Oklahoma across 7 counties. My crew and I cover those 7 counties and more than 30 communities, from Oklahoma City to Enid, El Reno to Watonga.

Every area I serve also gets my maintenance plans.

Counties I Serve

Click any county for a dedicated service page with local pricing notes, utility rebate information, and city-by-city coverage details.

Cities I Serve

Click your city for local service information, area technicians, and available HVAC services near you.

Don’t see your city? Call or contact usif you’re within 60 miles of Kingfisher I can likely help. 405-375-4822

Geothermal Across Oklahoma

For geothermal heat pump installations, I travel across Oklahoma and into most of the states that border it, depending on the customer and the project. As one of the state’s only IGSHPA Accredited Installers, I design and install ground-source heat pump systems with proper load calculations, soil assessment, and loop field engineering.

CKenergy members in their 10-county territory qualify for rebates up to $2,000/ton. OG&E’s Oklahoma residential rebates are closed for 2026 and return in 2027, and OG&E does not list a geothermal rebate. See 2026 rebate details ›

HVAC Services I Offer Across My Service Area

Where I work, and how far I drive

My shop is at 602 S Main in Kingfisher. Every day I run service calls across seven counties: Kingfisher, Canadian, Oklahoma, Garfield, Major, Logan and Blaine. If you are in one of those, I will come to you.

Towns I am in every week

Close to the shop: Kingfisher 73750, Hennessey 73742, Dover 73734, Okarche 73762, Loyal 73756.
West and south: Watonga 73772, Geary 73040, Calumet 73014, Yukon 73099, Piedmont 73078, Mustang 73064.
East and north: Cashion 73016, Crescent 73028, Edmond 73003, 73013 and 73034, Enid 73701 and 73703.
Oklahoma City: 73102, 73118, 73120 and the rest of Oklahoma County.

Drive time from Kingfisher

Hennessey, Dover and Okarche are under half an hour. Watonga, Geary, Crescent, Piedmont, Yukon and Edmond run 30 minutes to an hour. Enid and Oklahoma City are an hour to an hour and a half. That is drive time, not a promise of when I arrive: I book you into a real open slot and the office confirms the time.

After hours

I run 24/7 emergency service across all 7 counties. After hours it is $309 ($198 dispatch plus $111 diagnostic, non-refundable). Geothermal stays $348 flat and light commercial stays $389 flat, day or night. I book you into a real open slot and the office confirms the time; I do not promise an arrival time I cannot see on the schedule. Call 405-375-4822.

Geothermal goes farther

For geothermal I travel across Oklahoma and into most of the states that border it, depending on the customer and the project. I quote each job after I see it.

Your electric company and rebates

Around here that is usually OG&E, CKenergy, Cimarron Electric, Oklahoma Electric Cooperative or the Kingfisher municipal system. Rebates change by utility and by date, so tell me your ZIP and your electric company and the office will check the current program before anyone quotes you an amount.

Not sure if I cover you? Call 405-375-4822.

Frequently Asked Questions