15+ years • 6,500+ jobs completed • 1,500+ Oklahoma homes served
HVAC Services, Hartzell’s Heat & Air
★ 4.8 Stars / 290+ Reviews | 45 Yrs Experience | NATE Certified | Master HVAC License | Kingfisher, OK
I started doing HVAC work at 18. After 12 years working for another company, I opened Hartzell’s Heat & Air here in Kingfisher. That was about 15 years ago. Today I handle everything from a blown capacitor on a hot July afternoon to a full geothermal ground loop installation. Whatever your system needs, I can take care of it.
Before you need a repair, get the system checked. Here is my 2026 pre-summer AC tune-up guide with the full tune-up checklist. On the credentials side, Marquis Who’s Who included me in their 2026 edition, 2026 Marquis Who’s Who listing.
Central Oklahoma’s busiest HVAC season is coming. Same-day and next-day appointments fill fast in summer. Call 405-375-4822 now to get on the schedule, or chat with us using the button in the corner.
All HVAC Services I Offer in Central Oklahoma
Air Conditioning Repair
Capacitors, contactors, coils, refrigerant recharge. $111 diagnostic. NATE-certified tech, upfront pricing.
Learn more →Hartzell’s Refreb, HVAC Rebuild
Not ready to replace? Full system rebuild, AC, furnace, heat pump, or geothermal. 1 to 5-year parts and labor warranty depending on system. Starting at $3,500 installed.
Learn more →Furnace & Heating Repair
Gas furnace ignitors, heat exchangers, control boards. Same-day available.
Heating Repair → | Furnace Repair →HVAC System Replacement
Free estimates. Trane, RunTru, Mitsubishi, Daikin. Financing available.
Learn more →Maintenance & Tune-Ups
Tune-Up PMA at $138/yr. PMA plans from $138/yr. Priority scheduling.
Learn more →Heat Pump Repair
Air-source and geothermal heat pumps. Reversing valves, refrigerant, coils.
Learn more →Heat Pump Installation
Ducted and ductless heat pumps. Free estimate. Utility rebates available.
Learn more →Ductless Mini-Splits
Mitsubishi Diamond Dealer. ACiQ. Single-zone and multi-zone. Garages, shops, additions.
Mitsubishi → | Mini-split guide →Geothermal Systems
IGSHPA Accredited installer. ClimateMaster GeoElite. CKenergy rebates up to $24,000.
Learn more →Geothermal Repair
Loop diagnostics, refrigerant issues, compressor service, and controls. IGSHPA Accredited. $111 diagnostic.
Learn more →Geothermal Installation
New ground-source heat pump installs statewide. Manual J load calc, proper loop field design. Free estimate.
Learn more →Geothermal, Guthrie, OK
ClimateMaster GeoElite installer in Logan County. OEC rebates $400, $700/ton. Red-clay soils perform well for horizontal closed-loop systems.
Learn more →Indoor Air Quality
HEPA filtration, UV air purifiers, humidifiers, dehumidifiers, fresh-air ventilation.
Learn more →Water Heater Services
Bradford White authorized dealer. Tankless, standard, hybrid. Repair and replacement.
Learn more →Emergency HVAC
24/7 emergency service. $99 dispatch + $111 diagnostic. Kingfisher and OKC metro.
Learn more →Commercial & Specialty
Rooftop units, boilers, chillers, cooling towers, industrial HVAC, oil field equipment.
Learn more →Thermostat Services
Honeywell, Ecobee, Google Nest, Sensi, Emerson. Wiring, C-wire adapter, programming.
Thermostats → | Smart thermostats →Refrigerant Services
R-410A, R-32, R-454B, R-22 recovery. EPA 608 certified. A2L-ready technicians.
Learn more →Electrical & Safety
Disconnect boxes, surge protectors, capacitors, contactors, wiring, code compliance.
Learn more →Blower Motor Service
PSC replacement from $649 installed. ECM variable speed from $1,495. Azure Digi-Motor ECM upgrade for PSC-era systems. Blower wheel cleaning and replacement.
Learn more → ECM upgrade pricing →AC Capacitor Replacement
The most common single AC repair in an Oklahoma summer. Single run from $205, dual run $369, $419. Hard start kits from $318. Caught early, it saves a $1,200+ compressor.
Learn more →Condensate Drain Service
Drain flush from $225. A clogged condensate line is the most common cause of AC water damage. Pump replacement $445-$525. Safety switch install, drain rebuilds, full water damage prevention kits.
Learn more →Coil Cleaning & Replacement
Condenser coil water rinse from $221. Evaporator Level 1 clean $245, Level 3 pull & bench $895. Coil replacement by tonnage $1,495-$2,395. Refrigerant leak detection and repair.
Learn more →AC Compressor Replacement
The heart of your AC. Scroll compressor replacement from $1,895 installed (1.5-2 ton). Burnout recovery, hard start kits, acid testing. If your system is 10+ years old, full replacement often beats compressor-only.
Learn more →Contactor Replacement
The #1 reason an AC won’t start on a hot day. Single-pole from $189, double-pole from $239. SureSwitch solid-state upgrade $581. Contactor + capacitor combo $371.
Learn more →Condenser Fan Motor
If the outdoor fan stops spinning, the compressor overheats in minutes. PSC universal from $495. ECM Azure upgrade $1,170. Fan blade and motor combos from $795.
Learn more →Flue Pipe & Venting
Bird nests and wasp nests block furnace flue caps every Oklahoma spring. PVC blockage clearing from $295. B-vent replacement. CO safety inspection included on every flue call.
Learn more →Heat Exchanger Service
A cracked heat exchanger leaks CO into your living space. I red-tag and shut down any furnace with a confirmed crack. CO/crack detection $345. Replacement $1,895, $2,695.
Learn more →Reversing Valve & TXV
Heat pump stuck in heating or cooling only? That’s the reversing valve. TXV restriction causes weak cooling in midsummer. Stuck valve release $349. Full replacement from $2,047.
Learn more →Whole-Home Humidity Control
Oklahoma winters are dry enough to crack wood floors. Summers are humid enough to grow mold in crawlspaces. AprilAire bypass humidifier from $995. Whole-home dehumidifier from $2,295.
Learn more →HVAC Air Filtration
Red clay dust, cottonwood, wildfire smoke, wheat harvest, Oklahoma is hard on air filters. MERV 8 swap from $42. AprilAire media systems. Trane CleanEffects whole-home upgrade $2,420.
Learn more →Amana HVAC
Amana heating and cooling equipment, reliable, affordable, and backed by a lifetime compressor warranty on qualifying models. Sales and service in central Oklahoma.
Learn more →