HVAC Rebuild & Refurbishment Oklahoma | Hartzell’s Heat & Air

Hartzell’s Heat & Air offers HVAC rebuild and refurbishment services across central Oklahoma — a cost-effective middle ground between a simple repair and a full system replacement. Conventional system rebuilds run $1,500–$5,500 installed with a 1 or 2-year parts-and-labor warranty. Geothermal rebuilds start around $3,500 versus $20,000+ for a full replacement. Call 405-375-4822.

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I’ve been rebuilding HVAC systems in central Oklahoma since before most of the box stores around here even sold HVAC equipment. In 45 years of doing this work, one thing I’ve learned is that “repair” and “replace” aren’t the only two options on the table. There’s a third path — a full rebuild or refurbishment — and for the right system in the right condition, it’s almost always the smarter financial move.

A rebuild isn’t patching a failing part and hoping for the best. It’s systematically replacing every high-wear component in a system — compressor, capacitors, contactor, motor, refrigerant charge, electrical connections — so what you’re left with is a system that performs like new, backed by a real warranty, without the $8,000–$20,000 price tag of a full replacement. I do this for both conventional split systems and geothermal heat pumps, and in many cases it extends equipment life by 8–15 years.

If your system is 8–18 years old and the shell is structurally sound, call me before you let someone talk you into a full replacement. Let’s look at whether a rebuild makes sense first.

⭐ 4.8 Stars / 271 Reviews  ·  Master HVAC License  ·  NATE Certified  ·  Kingfisher, OK

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What Is an HVAC Rebuild or Refurbishment?

Most HVAC companies offer two options: repair a broken part, or replace the whole system. A rebuild is the third option — and it’s one most companies won’t quote because it requires more diagnostic skill and more labor time than a simple swap-out.

Here’s the difference:

• Repair: Fix or replace the one part that failed. Gets you running today, but doesn’t address the underlying wear on surrounding components — which often fail within 1–3 years of each other.
• Rebuild / Refurbishment: Systematically replace all high-wear components in a single visit. Coil cleaned and inspected, refrigerant verified, electrical connections re-torqued and protected, motor and capacitor swapped, contactor replaced. You get a like-new system performance backed by a real warranty — without buying new equipment.
• Full Replacement: Right choice when the cabinet is damaged, the system is undersized for the load, or it’s reached the end of its useful mechanical life (typically 18–22 years for split systems, 20–25 years for geothermal). Free estimate on new installs.

A rebuild makes sense when the equipment is 8–18 years old, the shell is structurally sound, and the total rebuild cost is less than 50% of a full replacement — which it usually is.

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Geothermal System Rebuilds

Geothermal heat pump rebuilds are where the financial case is most compelling. A brand-new geothermal installation in central Oklahoma runs $15,000–$35,000 depending on the loop field, home size, and system configuration. A full rebuild of an existing geothermal unit — compressor swap, desuperheater service, refrigerant recovery and recharge, loop verification — typically runs $3,500–$8,500, installed and warranted.

That’s a savings of $10,000–$25,000 on average. If the loop field is in good condition (and they usually are — ground loops commonly last 50+ years), a geothermal rebuild is almost always the right call.

Our 3-Step Geothermal Rebuild Process

Geothermal Brands We Rebuild

ClimateMaster · WaterFurnace · Bosch · Trane Geothermal · Florida Heat Pump · Command-Aire · Louisville Geothermal · Climate Control · GeoComfort · Nordic

If your geo brand isn’t listed, call anyway — in 45 years I’ve worked on nearly every geothermal platform ever sold in Oklahoma.

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Conventional Split System Rebuilds

For standard gas furnace / central AC systems and heat pumps, a rebuild targets the components that fail in clusters — which is why one repair leads to another, then another. Instead of chasing failures, a rebuild addresses them all in one visit.

Conventional Rebuild Component Checklist

Not every rebuild includes every item above. The assessment determines which components need replacement versus which are still within service life. You only pay for what’s actually needed — quoted upfront, no surprises at the end.

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Rebuild Warranty Options

Warranty terms vary by component manufacturer. OEM compressors typically carry 5-year manufacturer warranties when installed by a licensed contractor. Dave’s 360 Plan details available at our maintenance plans page.

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Is My System Worth Rebuilding?

Good question — and one I answer honestly every time. Here’s the framework I use:

Not sure which category your system falls into? That’s exactly what the $111 diagnostic is for. I’ll give you a component-by-component report and a straight answer — rebuild, refurbish, or replace — before we touch anything.

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Frequently Asked Questions — HVAC Rebuild & Refurbishment

How much does an HVAC rebuild cost in Oklahoma?

A conventional split system rebuild (AC + furnace) typically runs $1,500–$5,500 installed, depending on which components need replacement. Geothermal rebuilds start around $3,500 and can run up to $8,500 for a full compressor swap with loop service. Every rebuild starts with a $111 diagnostic that is credited toward the work if you proceed — so you get a written quote before committing to anything. Call 405-375-4822 to schedule an assessment.

What is the difference between an HVAC repair and a rebuild?

A repair addresses the single component that failed right now. A rebuild addresses all the high-wear components that are near the end of their service life — capacitors, contactors, motors, refrigerant charge, blower, coil — in one visit. A rebuild costs more upfront but dramatically reduces the likelihood of another failure within the next 2–5 years, and it comes with a full parts-and-labor warranty. It’s the smarter financial move when your system is 8–16 years old.

Do you rebuild geothermal heat pumps?

Yes — geothermal rebuilds are one of our specialties. Dave Hartzell is IGSHPA Accredited and a ClimateMaster GeoElite Dealer with 45 years of HVAC experience and extensive geothermal background. We rebuild ClimateMaster, WaterFurnace, Bosch, Trane Geothermal, Florida Heat Pump, Nordic, and most other platforms. A geothermal rebuild typically runs $3,500–$8,500 versus $15,000–$35,000 for a full replacement — a compelling case when the loop field is healthy. Call 405-375-4822.

What warranty comes with a rebuild?

All rebuilds include a 1-year parts-and-labor warranty on every replaced component. Enroll in our Preventive Maintenance Agreement (starting at $138/year) and we extend that to 2 years. For geothermal or customers on Dave’s 360 Plan ($360/year), OEM compressors typically carry a 5-year manufacturer warranty. We document all work performed and warranty terms in writing before we leave.

How do I know if my system should be rebuilt or replaced?

The general rule: if your system is under 16 years old, the cabinet is structurally sound, and the rebuild cost is less than 50% of a replacement, a rebuild is usually the right call. Key red flags that point toward replacement: R-22 refrigerant, cracked heat exchanger, failed scroll compressor on a very old unit, or significant cabinet corrosion. We’ll give you a straight, documented answer after the $111 diagnostic assessment — no pressure either way. Call 405-375-4822 or book online.

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Serving Kingfisher, Enid, Edmond, El Reno, Guthrie, Yukon, Mustang, Weatherford, and surrounding communities across central Oklahoma.

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