Buying a Home With a Wood Stove or Fireplace: What Is a WETT Inspection, and Why Do Insurers Want One?
WETT certifies people, not appliances — it’s not a pass/fail stamp but an inspection report by a WETT-certified pro, which Ontario insurers often require before they’ll bind coverage
What is a WETT inspection — is it a "pass" certificate for the fireplace?
No. WETT certifies people, not appliances. According to WETT (Wood Energy Technology Transfer Inc., a national non-profit), WETT trains and certifies the professionals who inspect, install and maintain wood-burning systems; there is no “WETT inspection certificate,” and no appliance can be “WETT certified” — what you get is an inspection report done by someone who is WETT-certified. Many Ontario insurers treat that report as a condition of insuring a home with a wood-burning appliance; without it they may decline coverage or raise the premium.
Sources: WETT Inc. (wettinc.ca, inspection levels and certification); Ontario insurance brokers (ThinkInsure, AmeriSpec Canada) on underwriting requirements and cost. Costs are industry ranges; premium impact varies by carrier. Reviewed June 2026.
Fall for a home with a wood stove or fireplace and you’ll likely hear “you need a WETT” before you firm up. Many buyers assume that’s a pass/fail certificate for the fireplace — it’s the opposite. Here’s what WETT actually is, what one inspection covers, why insurers keep asking for it, the levels involved, roughly what it costs, and how to write it into your offer to protect yourself.
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Bust the myth first: WETT certifies people, not appliances
What a Level 1 inspection covers
Three levels: when it escalates
⚠️Never hide a wood stove or fireplace from your insurer. According to ThinkInsure, an undisclosed wood-burning appliance can let the insurer deny a claim and cancel the policy. If it’s there, disclose it and keep the WETT report and maintenance records handy.
Why insurers want it
Cost, frequency, and what to do when buying
Frequently Asked Questions
Is a WETT inspection a pass certificate for the fireplace?
No. According to WETT, WETT certifies people, not appliances — there’s no “WETT certificate.” You get an inspection report from a WETT-certified inspector describing what was checked and what needs correcting.
Do I have to get a WETT when buying a home with a wood stove?
Not legally required, but practically near-mandatory. Many Ontario insurers require a WETT report to insure a home with a wood-burning appliance, or they’ll decline or surcharge. So buyers usually get one and write it into the offer.
How much is a WETT inspection, and how often?
A Level 1 typically runs $200–$300 (industry range); deeper Level 2/3 work can be $500+. According to ThinkInsure, get it when you buy and then every five years.
How do I use a WETT to protect myself when buying?
Make the offer conditional on a satisfactory WETT inspection (or fold it into the home-inspection condition). That way, if it turns up problems or your insurer won’t bind coverage, you have grounds to require corrections, renegotiate, or walk. Also confirm the inspector is currently WETT-certified.
Arthur Zhao
Real Estate Broker · FRI · ABR · SRS · PSA · MCNE · E-PRO · CLHMS & GUILD Elite · REAIS
VP & Branch Manager, Bay Street Group Inc.
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