Do wood stoves affect cottage insurance premiums in Ontario?

Wood-burning stoves are a defining feature of Ontario cottage life. Whether it is a modern airtight stove providing supplemental heat on cool autumn evenings or an older cast-iron model that serves as the cottage’s primary heat source, wood stoves are part of the cottage country experience. They are also one of the factors that insurers examine most carefully when underwriting a cottage policy.

Why Insurers Care About Wood Stoves

Wood-burning appliances are a documented cause of residential fires across Ontario. Chimney fires from creosote buildup, improper clearance between the stove and combustible walls, and deteriorated chimney liners are all ignition sources that insurers see in their claims data. In cottage settings, where fire department response times are longer and the consequences of a structure fire are more likely to be a total loss, the risk is amplified.

Insurers evaluate wood-burning appliances based on several factors: whether the stove is the primary or secondary heat source, the age and type of the stove, whether it is CSA-certified, the condition and type of the chimney system, and the clearances from combustible surfaces. A modern CSA-certified stove installed with proper clearances and connected to a lined chimney system presents a materially different risk than a 40-year-old stove venting through an unlined masonry chimney.

The premium impact of a wood-burning appliance varies by insurer but typically falls in the range of 5 to 15 percent above what the same property would cost without one. Some insurers may decline to write a policy if the wood stove installation does not meet current safety standards, particularly if the property is also classified as unprotected risk due to fire hall distance.

The WETT Inspection Requirement

Most Ontario cottage insurers require a current WETT (Wood Energy Technology Transfer) inspection for any property with a wood-burning stove, fireplace insert, or wood-burning fireplace. WETT is the Canadian industry standard for evaluating wood-burning appliance installations.

A WETT inspection assesses the appliance itself, the chimney system, the hearth pad, clearances from combustible materials, and the overall condition of the installation. The inspector issues a certificate that categorizes the installation as pass, conditional pass, or fail. Insurers typically require a pass or conditional pass certificate, and some may specify that deficiencies identified in a conditional pass must be remedied within a defined timeframe.

WETT inspections are generally valid for a period defined by the insurer — commonly three to five years — after which a re-inspection may be required. If you purchase a cottage with a wood stove, obtaining a WETT inspection before binding insurance coverage is advisable, as the results may affect both eligibility and premium.

The cost of a WETT inspection in Ontario cottage country typically ranges from $200 to $400 as of 2026, depending on the complexity of the installation and the inspector’s travel distance. WETT-certified inspectors can be found through the WETT Inc. directory.

Optimizing Your Coverage with a Wood Stove

If your cottage has a wood-burning appliance, several steps can help you secure the best available coverage and premium.

First, ensure the installation is current and compliant. If the stove is old and does not meet current CSA standards, replacing it with a modern certified model can improve both safety and insurability — our wood stoves and cottage insurance guide covers what insurers look for. Modern stoves burn more efficiently, produce less creosote, and are designed with better clearance and safety features.

Second, maintain the chimney system. Annual chimney cleaning by a WETT-certified sweep removes creosote buildup and identifies deterioration before it becomes dangerous. Documentation of annual cleaning can support your insurance application and may be requested following a claim.

Third, install a monitored fire alarm system. Given that wood stove fires can start when the property is unoccupied — a particularly high-risk scenario in cottage country — a monitored alarm that alerts the fire department directly provides meaningful risk reduction. Many insurers offer premium credits for monitored systems that can partially offset the wood stove surcharge.

Fourth, communicate with your broker about any changes to your heating setup. If you add, remove, or replace a wood stove, your insurer needs to know. Undisclosed changes to the heating system can affect claims outcomes.

For guidance on insuring a cottage with a wood stove in Muskoka, Haliburton, Parry Sound, or anywhere in Ontario’s cottage regions, call Luca at 705-996-1116.