Heat Pump Repair | Central Oklahoma
Air-source heat pumps are more complex than standard AC systems — they run year-round in both heating and cooling modes, and the reversing valve that switches between modes is a common failure point that most general HVAC techs misdiagnose. Dave Hartzell has been repairing heat pumps in central Oklahoma since the early 1990s with NATE certification and Trane Comfort Specialist training. If your heat pump is blowing the wrong temperature, freezing up, short cycling, or making unusual noise, Hartzell’s diagnoses it correctly the first time.
Hartzell’s is booked weeks out during peak season. Call 405-375-4822 now to lock in your spot — same-day often available for urgent issues. Or use the chat button in the corner.
✓ NATE Certified
✓ Trane Comfort Specialist
✓ Kingfisher for 15+ years
$111 Diagnostic · NATE-Certified Tech · 405-375-4822
Same-day slots available — heat pump specialist
Hartzell’s heat pump service — Kingfisher, Oklahoma
Common Heat Pump Problems We Fix
- Not heating in winter — Could be reversing valve failure, low refrigerant, defrost board, or outdoor unit icing
- Not cooling in summer — Low refrigerant, failed capacitor, contactor, or reversing valve stuck in heat mode
- Blowing cold air in heat mode — Reversing valve stuck, defrost issues, or backup heat not engaging
- Short cycling — Refrigerant charge problem, thermostat wiring, or oversized system
- Ice buildup on outdoor unit — Normal in defrost mode; abnormal if unit is encased in ice
- High energy bills — Refrigerant leak causing the backup electric strips to run constantly
Common Questions About Heat Pump Repair
Why is my heat pump blowing cold air when it should be heating?
Most likely cause: the reversing valve is stuck in cooling mode, or the system is in defrost cycle. Defrost is normal and brief — reversing valve failure requires repair.
Heat pumps use a reversing valve to switch between heating and cooling. When it fails or sticks, the system blows the wrong temperature. Defrost mode (which temporarily blows cooler air for 10-15 minutes) is normal and not a malfunction. If you’re getting consistently cold air in heat mode, call Hartzell’s — reversing valve diagnosis requires a trained heat pump tech, not a general HVAC tech.
Should I run the emergency heat setting on my heat pump?
Only in a true emergency — emergency heat (electric backup strips) costs 2–3x more to operate than the heat pump. It’s a temporary backup, not a regular heating mode.
The EM HEAT setting bypasses the heat pump entirely and runs only the electric backup strips. Use it only if the outdoor unit is clearly broken and you need heat immediately. Running it long-term drives up electricity bills significantly. Call Hartzell’s for a repair appointment instead — don’t run emergency heat for more than a day or two.
How long do heat pumps last in Oklahoma?
12–15 years with proper annual maintenance. Oklahoma’s hot summers and full-season use wear heat pumps faster than in cooler climates.
Heat pumps run both summer and winter — more total hours than a standard AC. In central Oklahoma, a well-maintained heat pump typically lasts 12–15 years. Annual maintenance (coil cleaning, refrigerant check, electrical inspection) is the primary factor in reaching the upper end of that range. If your heat pump is over 12 years old and needs a significant repair, Dave will give you honest guidance on repair vs. replacement.
How often should I change the filter on my heat pump in Oklahoma?
Most homes in central Oklahoma do well at every 60–90 days. Homes with pets or heavy dust may need monthly changes to protect coils and keep airflow strong.
A clogged filter is one of the most common causes of reduced heat pump efficiency and early component failure. Because heat pumps run year-round in Oklahoma, filter changes are even more important than with a seasonal AC-only system. Set a reminder on your phone — it’s the simplest thing you can do to extend the life of your equipment.
Do heat pumps work well in Oklahoma winters?
Yes — Oklahoma’s mild winters are actually well-suited for heat pumps. When temps drop below 25°F, backup heat strips engage automatically. Hartzell’s ensures proper sizing and realistic comfort expectations.
Central Oklahoma rarely sees sustained temperatures cold enough to challenge a properly sized heat pump with backup heat. Modern heat pumps — especially cold-climate models like Mitsubishi H2i — maintain significant capacity well below freezing. Dave reviews your home’s load and local climate data during every installation to set realistic expectations.
Heat Pump Repair Cost in Central Oklahoma
These are typical installed repair costs for central Oklahoma. Final price depends on part availability, refrigerant type, and system age. The $111 diagnostic fee is credited toward your repair when you approve the work.
| Repair | Typical Cost | Notes |
|---|---|---|
| Capacitor replacement | $150 – $400 | Most common summer failure; fast fix, 30–60 min |
| Contactor replacement | $175 – $400 | Controls power to compressor and fan; often replaced with capacitor |
| Refrigerant recharge (leak locate + repair + recharge) | $400 – $1,200 | R-410A systems; R-22 (Freon) runs higher due to phaseout pricing |
| Defrost control board replacement | $350 – $800 | Controls defrost cycle; failure causes outdoor unit to ice over |
| Reversing valve replacement | $600 – $1,500 | Heat-pump-specific part; determines heating vs. cooling mode |
| Control board replacement | $450 – $1,200 | Manages system operation; variable-speed boards run higher |
| Compressor replacement | $1,200 – $3,000 | On systems 10+ years old, full replacement is often more cost-effective than compressor repair |
All repairs include the $111 diagnostic fee credited at approval. Prices are typical installed rates for central Oklahoma — quoted exactly before any work begins.
Considering a heat pump installation? See our Heat Pump Installation page for guidance on air-source heat pump options, sizing, and what to expect from the installation process.
Upfront estimate before any work starts. No surprises.
Nearby Communities We Serve
🔧 Not Sure? There’s a Third Option — HVAC Rebuild
Not every failing system needs full replacement. A rebuild replaces the major components — compressor, coil, refrigerant circuit — at 40–60% of replacement cost. I’ll tell you honestly whether your system is worth rebuilding. 45 years of experience. No pressure.
Heat Pump Not Working?
Hartzell’s diagnoses heat pump problems correctly. $111 diagnostic upfront pricing before any work begins.
Our Job Isn’t Done Until You’re Satisfied
- Your system is running, tested, and set to your preferred temperature
- You understand how to operate your new equipment or thermostat
- The work area is clean — we take our trash with us
- You have documentation for manufacturer warranty and any applicable rebates
- Every question you have is answered before we leave the driveway
Written by Dave Hartzell — Owner, Hartzell’s Heat & Air. Master HVAC License #00115936. Serving central Oklahoma for 15+ years.
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