Buying a Home With a Wood Stove or Fireplace in Ontario: WETT Certificates Explained

A wood-burning stove or an old masonry fireplace can be exactly the kind of character feature that sells a home — right up until your lender or insurer asks a question your realtor can't fully answer: do you have a current WETT certificate?

WETT inspections sit at the intersection of insurance, financing, and basic fire safety, and for a home with any solid-fuel heating appliance, they come up often enough that it's worth understanding before you're negotiating one under a closing deadline.

This article explains what a WETT certificate actually is, why lenders and insurers ask for one, and how to build the requirement into your offer properly.

What a WETT Certificate/Inspection Actually Is

WETT stands for Wood Energy Technical Training — it's a recognized certification program for inspectors who assess wood-burning and other solid-fuel heating appliances, including stoves, fireplace inserts, and some masonry fireplaces. A WETT inspection is a specialized assessment separate from a general home inspection, carried out by an inspector trained specifically in solid-fuel appliance installation standards.

Why Lenders and Insurers Care

Solid-fuel heating appliances are a recognized fire-risk category, and many home insurers require a satisfactory WETT inspection, or an equivalent professional assessment, before agreeing to insure a home that has one, or before renewing coverage on an existing policy. Because most residential mortgages require the borrower to maintain adequate insurance, an insurance requirement around a wood stove can indirectly become a financing condition too, even though the lender isn't independently assessing the appliance.

None of this means every home with a fireplace is uninsurable — a compliant, well-maintained, and properly certified installation is routine. The risk is buying a home with an appliance that hasn't been assessed at all, and finding out about the resulting insurance gap after you've already waived your conditions.

What the Inspection Covers

• [ ] Clearances between the appliance and combustible materials (walls, floors, framing)
• [ ] Chimney and flue condition, including liner type and any visible deterioration
• [ ] Whether the installation complies with recognized manufacturer and safety standards
• [ ] Whether any required permits or approvals for the installation exist
• [ ] The overall condition and apparent safety of the appliance as installed

Who Pays and Who Arranges It

There's no fixed rule — like most inspection-related costs in a resale transaction, who arranges and pays for a WETT inspection is negotiated between the parties, typically as part of the buyer's due diligence during the conditional period. It's most commonly the buyer's responsibility, arranged alongside, or instead of for the appliance specifically, the general home inspection, but this is a point worth confirming with your agent and lawyer early rather than assuming.

Building a WETT Condition Into Your Offer

1. Identify solid-fuel appliances early — during your showing or before you draft your offer, not after firm acceptance.
2. Include a specific condition for a satisfactory WETT inspection, separate from or as part of your general home inspection condition, with its own clear deadline.
3. Confirm your insurer's specific requirement before your condition deadline — some insurers want the certificate itself, others accept a recent inspection report, and the requirement isn't uniform.
4. Get any remediation the inspection identifies documented and, where negotiated, completed or credited before closing.
5. Keep the certificate or report — you'll likely need to provide it again at insurance renewal or if you sell the property later.

WETT Inspection vs. General Home Inspection

Frequently asked questions