HVAC parts vs. labor warranty: who pays for what
Published September 18, 2026 · Applies to residential equipment in the United States
Short answer: the manufacturer's warranty pays for the part. It doesn't pay for the technician's time to diagnose the problem, pull the old part and install the new one. That labor is covered only by the installing contractor's workmanship warranty, which commonly lasts one or two years, or by an extended labor plan bought separately. After that, a "covered" repair can still produce a sizable bill.
"Ten-year warranty" is the most misunderstood phrase in residential HVAC. Homeowners hear "ten years of free repairs." What they usually have is ten years of free parts, and even that only if the unit was registered in time. Knowing which piece of coverage pays for which line on the invoice prevents most of the arguments that happen when something breaks.
Who covers what
| Coverage | Who provides it | Typical length | What it pays for |
|---|---|---|---|
| Manufacturer parts warranty | The equipment brand | 5 years base; often 10 if registered | Replacement parts that failed from a defect |
| Workmanship / labor warranty | The installing contractor | Commonly 1–2 years; some shops offer more | Technician time on covered repairs, and fixing installation errors |
| Extended labor plan | Sold through the dealer, sometimes backed by the manufacturer | Often 5–10 years | Labor on covered part failures for the plan's term |
| Home warranty | A third-party home-warranty company | Annual contract | Varies widely. Service fees and caps apply. |
Trane, for one, states outright that its base and registered limited warranties cover parts and not the labor to repair them. Most brands work the same way. Refrigerant, freight on the part and diagnostic fees are also frequently excluded from the parts warranty. Read the certificate.
What a covered repair actually costs, by year
- Year 1: usually close to free. The part is under the manufacturer's warranty and the labor is under the installer's workmanship warranty.
- Years 2–5: the part is free and the labor is not, unless you bought an extended labor plan. On a big repair such as a compressor, the labor, refrigerant and recovery can easily run to four figures by themselves.
- Years 6–10: this is where registration decides everything. On a registered unit, the part is still free and you pay the labor. On an unregistered unit in most states, you pay for both, and a compressor alone commonly costs $2,000–$3,500 in parts.
Questions to ask before you sign an install contract
- How long is your labor warranty, and what does it exclude?
- Will you register the equipment with the manufacturer, and will I get the confirmation number?
- Is an extended labor plan available, what does it cost, and who backs it: you, the manufacturer, or a third party?
- Does the parts warranty require annual maintenance records, and do you offer a plan that keeps them?
Where maintenance fits in
Manufacturer warranties require the system to be properly maintained. When a large claim lands, the manufacturer can ask for proof. A yearly tune-up with a dated invoice costs little next to the parts it protects. It is also the most common reason a contractor calls a customer back as the first year ends, a conversation we cover in the month-11 guide.
Run an HVAC shop? Make the parts side of your warranty real.
The parts warranty you quote on every install only exists if the unit got registered. Send us brand, serial and install date for your last 12 months and we'll check every unit free: registered or not, window open or closed, days left on each.
Get the free auditQuick answers
Does an HVAC manufacturer warranty cover labor?
Generally no. Manufacturer warranties from brands like Trane state that they cover replacement parts but not the labor to repair them. Labor is covered by the installing contractor's workmanship warranty, usually one to two years, or by a separately purchased extended labor plan.
What is the difference between a parts warranty and a labor warranty on an AC or furnace?
The parts warranty comes from the manufacturer and pays for defective components, typically 5 years, or 10 if the unit was registered in time. The labor warranty comes from the installer and pays for the technician's time. When a company advertises 'parts and labor' coverage, the two usually come from different companies with different end dates.
Is refrigerant covered under an HVAC warranty?
Often not. Many manufacturer parts warranties exclude refrigerant, freight and diagnostic fees, so a covered compressor or coil replacement can still carry significant charges. Check the exclusions section of your warranty certificate.
Is an extended HVAC labor warranty worth it?
It depends on the price and who backs it. Labor is a large share of any major repair, and without a plan it is paid out of pocket after the installer's one- or two-year workmanship warranty ends. Ask whether the plan is backed by the manufacturer, the contractor or a third party, and what it excludes.
Related guides
This guide is general information, not legal advice, and TenKeeper is not affiliated with any manufacturer named above. Warranty terms are set by each manufacturer and can change; the certificate issued for your specific unit always governs.