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.

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

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 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, Cleveland County Norman extended, Grady County Chickasha extended, Custer County Weatherford extended, Dewey County Vici extended, Major County Fairview extended, Woodward County extended.

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 Norman Chickasha Weatherford, Tier-4 ninety-plus-minutes Stillwater Ponca-City Lawton extended-by-quote-only.

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