Parts and labour coverage are almost always sold separately, and the labour side is usually shorter, which surprises homeowners when a repair bill arrives.
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Quick answer
A parts warranty covers the replacement cost of a defective component from the manufacturer, while a labour warranty covers the cost of a technician's time to remove, install, and commission that part, and the two are typically sold or included on very different timelines. Many gas boilers and water heaters carry a parts warranty of several years but only one year or less of included labour, after which the homeowner pays for the technician's visit even if the part itself is still free. Understanding which term applies before a repair happens avoids an unpleasant surprise when the invoice arrives.
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It is one of the most common points of confusion CANRO deals with in Metro Vancouver: a homeowner is told their water heater or boiler has, say, a multi-year parts warranty, and they assume that means several years of essentially free service if anything breaks. In reality, the parts warranty and the labour warranty are almost always two different clocks, started at the same install date but often running for very different lengths of time.
The parts warranty is the manufacturer's promise to supply a replacement component — a control board, a circulator, a gas valve, an igniter — at no charge if it fails from a defect within the covered term. The labour warranty, when one exists, covers the cost of the technician's time to diagnose the problem, remove the failed part, install the replacement, and recommission the appliance. Some manufacturers include a modest labour allowance for the first year only; others do not include labour coverage at all beyond what the installing contractor separately offers as their own workmanship warranty.
The practical result: a homeowner with a five-year-old boiler might still get a failed control board replaced for free by the manufacturer, but pay the full service call and labour rate to have it installed, because the labour term expired years earlier. This is normal industry practice, not a sign of a bad warranty, but it is worth knowing before a repair is scheduled so there is no surprise on the invoice.
From the manufacturer's perspective, a defective part is something they can inspect, test, and trace back to their own factory processes, making it a reasonable long-term promise to stand behind. Labour is different: it depends entirely on the local contractor's rates, drive time, diagnostic time, and regional market conditions, none of which the manufacturer directly controls. Extending a long labour promise nationally would mean underwriting an unpredictable and regionally variable cost, which is why most manufacturers cap it short or leave it out of the base warranty entirely.
Some manufacturers offer extended labour warranties as a paid add-on at the time of purchase, sold through the installing contractor. If this option was available when your system was installed and it was not purchased, there is typically no way to add it retroactively once the appliance is in service. This is worth asking about proactively the next time you are quoting a new boiler or water heater install, rather than after a failure.
| Component | Parts Coverage Pattern | Labour Coverage Pattern |
|---|---|---|
| Heat exchanger | Often the longest parts term on the appliance | Rarely included beyond the first year, if at all |
| Control board / electronics | Commonly a mid-length parts term | Usually tied to the shorter base labour term |
| Circulator / pump | Often a shorter parts term than the exchanger | Usually tied to the shorter base labour term |
| Gas valve / igniter | Commonly a mid-length parts term | Usually tied to the shorter base labour term |
| Tank (storage water heaters) | Sometimes prorated after an initial full-coverage period | Rarely included beyond the first year, if at all |
These are general patterns, not a specific warranty schedule for any one brand or model, and exact terms differ by manufacturer and change over time. Always verify your certificate for your specific appliance rather than relying on a general table.
The installing contractor's own workmanship warranty is a third factor separate from both manufacturer parts and labour terms. If a failure is caused by how the appliance was installed rather than a defective part, it falls under the contractor's workmanship warranty, not the manufacturer's labour term. CANRO states our workmanship term clearly on every quote and invoice so homeowners know which coverage would apply if a problem shows up, and we tell people plainly when a repair is going to be a paid labour visit even though the part itself may be covered by the manufacturer.
Safety note
Any repair involving a gas valve, igniter, heat exchanger, or venting component must be performed by a Technical Safety BC licensed gas fitter, regardless of what warranty coverage applies. If you smell gas at any point, leave the home immediately and call FortisBC at 1-800-663-9911.
Only the part itself is typically free under the manufacturer's parts warranty; the labour to install it is a separate coverage that often expires much sooner, sometimes after just the first year. Confirm both terms for your specific appliance before assuming a repair costs nothing.
Labour rates and conditions vary regionally and by contractor in ways manufacturers cannot control the way they can control their own factory quality, so most manufacturers limit or exclude long-term labour promises. Some offer an extended labour warranty as a paid add-on at the time of original purchase.
Generally no. Extended labour warranties are usually sold at the time of the original installation through the contractor, and there is typically no way to add this coverage retroactively once the appliance is already in service.
No, a workmanship warranty covers problems caused by how the job was installed, not the cost of labour to replace a part that failed on its own due to a manufacturing defect. Those are two different types of coverage from two different parties.
Check the warranty certificate that came with the appliance or look up your model and serial number through the manufacturer, since terms vary by model and change over time. Your installing contractor's paperwork should also list what was covered at the time of purchase.
You would typically pay for the technician's diagnostic visit and installation labour while the manufacturer supplies the replacement part at no cost, assuming the parts warranty term is still active. A technician can confirm exactly which costs apply once the failed component is identified.
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