How long does a furnace last in Ottawa

Most furnaces in Ottawa last 15-20 years with proper maintenance, though this can vary significantly based on the furnace type, usage patterns, and how well it's been maintained throughout its life.

High-efficiency furnaces (90%+ AFUE) installed in the last 15 years typically have better longevity than older, less efficient models. The harsh Ottawa winters mean your furnace works harder than in milder climates, which can impact lifespan. A furnace that runs constantly during those -30°C cold snaps will naturally experience more wear than one in a warmer region.

Proper maintenance is crucial for reaching that 15-20 year lifespan. Annual tune-ups, regular filter changes, and addressing small issues before they become major problems can extend your furnace's life significantly. Conversely, neglected furnaces often fail prematurely, sometimes lasting only 10-12 years.

Signs it's time to consider replacement include frequent repairs (especially if repair costs exceed 50% of replacement cost), uneven heating, rising energy bills, or if your furnace is over 15 years old and requiring major component repairs. In Ottawa's market, a mid-efficiency furnace replacement typically runs $3,500-$5,000, while high-efficiency models range from $4,500-$6,500.

For safety reasons, older furnaces should be inspected annually by a TSSA-licensed technician, as aging heat exchangers can develop cracks that allow carbon monoxide to enter your home. If your furnace is approaching 15 years old, it's wise to start planning for replacement rather than waiting for an emergency failure during a cold Ottawa winter.

For a professional assessment of your furnace's remaining lifespan, request a consultation from Ottawa HVAC Pro - we can help you plan ahead and avoid unexpected breakdowns.

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