15+ years • 6,500+ jobs completed • 1,500+ Oklahoma homes served
★ HAPPY 4TH OF JULY ★
July 4th in Oklahoma means a full house, a hot kitchen, and the AC running flat out. Before the cookout, let me make sure yours can keep up. I hold same-day spots open for no-cool calls across Kingfisher and Central Oklahoma, and new-system estimates are always free. $99 dispatch, $111 diagnostic on repairs. 4.8 stars, 290+ reviews. Happy Independence Day from my family to yours. Call 405-375-4822 or book at hartzellsheatair.com.
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 within a 60-mile radius. My crew and I cover 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.
⭐ 4.8 Stars / 290+ Reviews, Central Oklahoma’s Trusted HVAC Company
Counties I Serve
Click any county for a dedicated service page with local pricing notes, utility rebate information, and city-by-city coverage details.
HVAC in Kingfisher County, OK ›
Kingfisher • Hennessey • Okarche • Cashion • Loyal • Dover
My home base, fastest response times in the region.
HVAC in Blaine County, OK ›
Watonga • Canton • Okeene • Geary • Longdale • Cleo Springs • Hitchcock
CKenergy geothermal rebates up to $2,000/ton (Source: CKenergy) available here.
HVAC in Oklahoma County, OK ›
Oklahoma City (NW) • Edmond • Yukon • Mustang • Piedmont • Bethany • Warr Acres
OG&E customers qualify for utility rebates on high-efficiency equipment.
HVAC in Canadian County, OK ›
El Reno • Yukon • Mustang • Hydro
HVAC in Logan County, OK ›
Guthrie • Crescent • Langston • Coyle • Meridian
HVAC in Garfield County, OK ›
Enid • Lahoma • Garber • Waukomis • Ringwood • Kremlin • Breckinridge
HVAC in Major County, OK ›
Fairview • Orienta • Chester • Ames
Cities I Serve
Click your city for local service information, area technicians, and available HVAC services near you.
Kingfisher County
Blaine County
Oklahoma County / OKC Metro
Canadian County
Garfield County
Major County
Don’t see your city? Call or contact usif you’re within 60 miles of Kingfisher I can likely help. 405-375-4822
Statewide Geothermal Installation
For geothermal heat pump installations, I travel anywhere in Oklahoma. 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 customers qualify for up to $1,000/ton. See 2026 rebate details ›
HVAC Services I Offer Across My Service Area
Service Area Map: Kingfisher, OK
Common HVAC Questions › · Current Specials › · Equipment Warranties › · See Pricing ›
Every City and County I Serve
Complete index of my service area: 7 counties, 33 city pages, and 22 ZIP-code neighborhood maps. Pick your area for local pricing notes, photos of recent work, and same-day availability.
Counties (7)
Cities (alphabetical)
Neighborhood Maps by ZIP (22)
Service Area Geography Index (Central Oklahoma)
Quick-reference for cities, ZIPs, counties, utility-territory overlay.
Primary Service Cities
Kingfisher 73750, Hennessey 73742, Dover 73734, Okarche 73762, Cashion 73016, Crescent 73028, Watonga 73772, Geary 73040, Calumet 73014, Loyal 73756, Lacey 73031, Marshall 73056, Banner 73058. Yukon 73099, Piedmont 73078, Mustang 73064, Edmond 73003, Edmond 73013, Edmond 73034. Oklahoma City 73101, OKC 73102, OKC 73118, OKC 73120. Enid 73701, Enid 73703.
Counties Covered
Kingfisher County primary, Canadian County secondary, Logan County tertiary, Blaine County overlap, Garfield County Enid coverage, Oklahoma County OKC-metro extended, Major County Fairview extended. I travel statewide for geothermal installations.
Utility Territory Overlay
OG&E Oklahoma-Gas-Electric forty-six-county territory, CKenergy ten-county rural-electric Beckham Roger-Mills Custer Dewey Blaine Major Woodward Ellis Harper Woods, Cimarron Electric Cooperative Kingfisher area, KPWA Kingfisher Power Water Authority municipal, CVEC Central Valley Electric Cooperative, OEC Oklahoma Electric Cooperative, ONG Oklahoma Natural Gas state-wide, CenterPoint Energy gas-distribution.
Drive Time Tiers From Kingfisher
Tier-1 zero-to-thirty-minutes Kingfisher Hennessey Dover Okarche, Tier-2 thirty-to-sixty-minutes Watonga Geary Crescent Edmond Piedmont Yukon, Tier-3 sixty-to-ninety-minutes Enid Oklahoma-City. I travel statewide for geothermal installations by quote.
Emergency Coverage Zones
24-7-emergency Kingfisher-County full-tier-1 same-hour-response, after-hours-call OKC-metro four-hour-response, weekend-on-call rotation-tech-coverage, holiday-availability Christmas Thanksgiving Easter limited, no-heat-no-cool freeze-event-priority emergency-fee-applies, frozen-pipe-prevention winter-pre-emption documentation-photos.
Project Type Coverage
Residential single-family-home primary, residential multi-family duplex triplex secondary, manufactured-home HUD-tagged permanent-foundation eligible, modular-home stick-built equivalent, light-commercial under-twenty-thousand-square-feet, restaurant-walk-in-cooler refrigeration-tier, commercial rooftop-package-unit, agricultural barn shop greenhouse, geothermal full-stack design-build.
Specialty Service Areas
Historic-homes pre-1950 retrofit-sensitivity, new-construction builder-trade-partner, renovation gut-rehab full-system, multi-zone communicating-thermostat zoning-dampers, ductless mini-split MSZ-FH series, geothermal vertical-bore horizontal-slinky, water-heater conventional-tank heat-pump-hybrid, generator natural-gas-propane standby-backup.
Code Authorities
Kingfisher City municipal building inspector, Kingfisher County Health-Department septic, OWRB Oklahoma Water Resources Board well-driller, ODL Oklahoma Department of Labor electrical-permit, Oklahoma Construction Industries Board CIB Mechanical-Journeyman license, AHJ Authority Having Jurisdiction case-by-case, ICC International Code Council certification, Oklahoma adopted IECC 2024.
Frequently Asked Questions
How far does Hartzell’s travel for HVAC service?
I serve a 60-mile radius from my Kingfisher, Oklahoma headquarters, covering 7 counties: Kingfisher, Blaine, Oklahoma, Canadian, Logan, Garfield, and Major counties. For geothermal installations, I travel anywhere in Oklahoma.
Does Hartzell’s service Oklahoma City?
Yes. Oklahoma City and the northwest OKC metro area, including Edmond, Yukon, Mustang, and Piedmont, are within my regular service area. My crew and I run the OKC corridor regularly and offer same-day service for most calls in that area.
Does Hartzell’s serve Enid, Oklahoma?
Yes. Enid and the surrounding Garfield County area are within my 60-mile service radius. I handle AC repair, furnace service, maintenance, and equipment replacement in Enid.
What areas qualify for CKenergy geothermal rebates?
CKenergy serves 10 counties: Blaine, Caddo, Canadian, Comanche, Custer, Dewey, Grady, Kiowa, Roger Mills, and Washita. Residential members qualify for up to $2,000/ton (max $24,000). I handle all rebate paperwork as an IGSHPA-Accredited installer.
Is same-day HVAC service available?
Yes. Same-day service is available for most calls in my core service area. For OKC metro and outer-area calls, same-day depends on scheduling. Call 405-375-4822 early in the day for same-day availability.
Not Sure If I Serve You? Call and Ask.
NATE Certified. Upfront pricing. Same-day available in most of my service area.
I also cover nearby HVAC service in Major County, OK. I travel statewide for geothermal installations.
Out west I also handle AC and furnace repair in Blaine County, covering Watonga, Geary, and Okeene.