Repair or Replace Your HVAC? Get an Answer in 60 Seconds
Don’t wait for the next breakdown: The best time to use this calculator is before emergency mode — when you still have options. Summer service slots fill fast. Call 405-375-4822 to check availability or ask about a Refreb.
Enter your numbers below. The calculator scores the same three criteria I check on every service call and gives you a straight recommendation — no pressure, no guessing.
🔧 HVAC Rebuild — A Third Option
Most contractors give you two choices: repair it or replace it. I give you three. A rebuild means replacing the major components of your existing system — compressor, coil, refrigerant circuit — while keeping the frame, ductwork, and infrastructure in place. It is not a patch job. It is a legitimate middle path that can extend your system’s life by 7 to 12 years at 40 to 60 percent of full replacement cost.
I have been doing rebuilds in central Oklahoma for 45 years. I will tell you honestly whether your system is worth rebuilding — and if it is not, I will tell you that too. No pressure. No upsell.
What We Rebuild
- Compressor replacement (scroll, two-stage, variable-speed)
- Evaporator and condenser coil replacement
- Refrigerant circuit repair and recharge
- Blower motor and ECM replacement
- Heat exchanger replacement
- Electrical board and control replacement
Rebuild Financing Available
We offer the same financing on rebuilds as we do on full replacements — including 0% interest for up to 60 months through Synchrony, Wells Fargo, and Wisetack. A rebuild that costs $3,500 financed at 0% for 60 months is $58 a month. That beats a new system payment every time when the math works out.
Enter system age and repair cost to see your recommendation.
Results update live as you fill in each field.
How the 3-Point Grid Works
The grid scores three independent criteria. If two or more trigger, replacement makes better financial sense in most cases. If fewer than two trigger, repair is reasonable. I always show both paths — the homeowner decides.
1 — Age Check
Standard AC/heat pump systems ≥ 12 years lean replace. Geothermal units use a 20-year threshold. Systems within 3 years of the threshold (i.e., 9–11 years for standard, 17–19 years for geo) show a caution rather than a hard trigger — worth watching, not necessarily replacing today.
2 — Cost Rule
Repair cost × age ≥ $5,000, OR the repair exceeds 40–50% of a comparable new install price.
3 — Service Constraints
R-22 refrigerant (discontinued), R-410A (rising supply cost), expired non-transferable warranty, or critical part back-ordered.
Quick Decision Guide
Not ready to run the numbers yet? Use this at-a-glance guide to see which path fits your situation.
✅ Repair Makes Sense If…
- System is under 8 years old
- Repair cost is below 30% of replacement cost
- Single isolated failure — no pattern of breakdowns
- Active parts warranty still in place
- Refrigerant is R-410A or newer (no R-22)
- Parts are available same-day or next-day
❌ Replace Makes Sense If…
- System is 12+ years old (20+ for geothermal)
- Repair cost × age exceeds $5,000
- Repair is over 45% of a new install price
- Running on R-22 refrigerant
- Warranty expired and non-transferable
- Repeated repairs over the past 2–3 years
🔧 Rebuild Makes Sense If…
- System is 5–12 years old
- Compressor or coil failed but the rest of the system is solid
- Repair cost falls in the 30–50% of replacement gray zone
- You have a quality brand worth preserving (Trane, Carrier)
- No refrigerant issues or R-22 concerns
- One major failure but no history of repeated repairs
Common Questions
How do I find my system’s age if I don’t know when it was installed?
Check the outdoor unit nameplate — it’s usually on the side or back of the cabinet. Look for “MFG DATE” or decode the serial number. Most manufacturers encode the year and week in the first four digits (e.g., 1815 = week 15 of 2018). If you can’t read it, call 405-375-4822 and read us the model and serial number — we can look it up in under two minutes.
What is the $5,000 rule and where does it come from?
Multiply the total repair cost by the age of the system in years. If the result is $5,000 or more, replacement typically wins financially. Example: a $700 repair on a 14-year-old system equals $9,800 — replace trigger. A $700 repair on a 6-year-old system equals $4,200 — repair is reasonable. The rule accounts for the fact that repair costs aren’t a one-time event on aging equipment — they tend to compound.
What does R-22 vs R-410A vs R-32 mean for my decision?
R-22 was fully phased out in 2020. It’s scarce, expensive, and no new equipment uses it — any R-22 system is a strong replace candidate on refrigerant alone. R-410A is the current standard in most homes, but new equipment manufactured after January 1, 2025 must use A2L refrigerants (R-32, R-454B). Existing R-410A systems can still be serviced and recharged — but refrigerant costs are rising. R-32 and R-454B are the current new-install standard — not a concern.
Should I repair or replace a 15-year-old AC?
Run the numbers in the calculator above — but generally: age alone (15 years) is one trigger. If the repair cost × 15 pushes past $5,000, or the system is on R-410A with an expired warranty, you’ll typically hit 2 of 3 and replacement makes sense. That said, if it’s a small capacitor on an otherwise well-running Trane, repair is still defensible. The calculator will show you where you stand. Call 405-375-4822 and I’ll run the numbers on-site with no pressure.
What is SEER2 and how do I convert my old SEER rating?
SEER2 is the updated efficiency testing standard that took effect in 2023. SEER2 numbers are roughly 5–15% lower than old SEER ratings for the same equipment because the test uses more realistic conditions. To convert: divide your old SEER by 1.15 to get the approximate SEER2 equivalent. A 14-SEER unit from 2015 is about 12.2 SEER2. The new minimum for a central AC installation in our region is 13.4 SEER2 — so any old 10-SEER system you replace will see a large efficiency jump.
What financing options are available for HVAC replacement?
We offer financing through Synchrony, Wells Fargo, and Wisetack. Some options include deferred-interest periods and low monthly payments that completely change the repair-vs-replace math. A $7,500 system financed at $85/month often looks very different next to a $1,200 repair on an aging unit. Ask about current promotions when you call, or see the financing page.
What is a Hartzell’s Refreb — is it a real option between repair and replace?
Yes. A Refreb (rebuild) is a full system teardown and parts replacement with a 1–2 year parts and labor warranty, starting at $1,200. It’s designed for systems 8–18 years old where the repair estimate is $1,000 or more — a situation where a standard repair feels risky but a full replacement feels premature. We source quality parts, do the work right, and back it with a written warranty. Learn more at the Refreb page or call 405-375-4822 to discuss whether it fits your situation.
Serving Kingfisher and surrounding counties:
Not Sure If You Should Repair or Replace?
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Call for a diagnostic. $99 dispatch fee for the service call (waived for maintenance plan members), plus $111 diagnostic — the diagnostic applies toward the repair when you proceed.
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3-Point Grid — Quick Reference (JavaScript required for the interactive calculator)
| Criterion | Trigger Condition | Caution Zone |
|---|---|---|
| 1 — Age Check | Standard system ≥ 12 yrs · Geothermal ≥ 20 yrs | 9–11 yrs (standard) · 17–19 yrs (geo) |
| 2 — Cost Rule | Repair × Age ≥ $5,000 OR repair > 45% of new install | Repair × Age ≥ $3,000 OR repair > 30% of new install |
| 3 — Service Constraints | R-22 refrigerant · Expired/unregistered warranty · Part back-ordered | R-410A · Expired-but-registered warranty · Part 7–14 day lead time |
Decision: 2+ triggers → Replace | 1 trigger → Lean Replace (see both paths) | 0 triggers → Repair. Call 405-375-4822 for a free on-site assessment.