- Coverage
- Canadian market & registry
- Reviewed
- 11 October 2026
- Price
- Scope-specific written quote
- Reliability
- Evidence, not invented scores
Understand online furnace prices, sizing and rebate claims
Learn what a search summary leaves unresolved before using it to make a purchase decision.
A search summary is a starting point
Online summaries often combine numbers from different contractors, years, equipment types and scopes. A range can be accurate for its original offer and still be a poor fit for your own installation. Read the source and identify what the number includes before comparing it with a written quote.
This section uses the questions raised by common search summaries without treating their figures as verified prices for your home. Sources, dates, equipment identity and exclusions matter more than a confident-looking answer.
Price and efficiency categories can overlap
“High-efficiency,” “two-stage” and “variable-speed” describe different attributes. They are not three mutually exclusive price tiers. A high-efficiency furnace can also have two stages and a variable-speed blower. Compare the actual model and included controls, not just the label in a price table.
An 80% furnace advertised on a North American page is not automatically an appropriate ordinary Toronto replacement. Ask the contractor to establish Canadian eligibility and the permitted application of the exact unit. Do not choose a unit simply because an online table presents it as the budget option.
Square footage does not select the furnace
A list pairing floor area with broad BTU ranges is not a heat-loss assessment. It may omit whether BTU means input or output and whether the floor area includes the heated basement. Insulation, leakage, exposed surfaces and local design conditions also matter.
Ask for a room-by-room assessment using the applicable Canadian method and design assumptions. A generic instruction borrowed from another country is not enough to identify which method applies to this particular Canadian job. The contractor should name the method, show the result and explain the selected output.
Lifespan, rebates and loans need context
A broad lifespan range cannot tell you whether your furnace is safe or how many years remain. Use diagnosis, condition, repair history and the service arrangement. Do not treat a birthday as a replacement order.
A rebate is not a loan, a headline maximum is not an approval, and a closed or expired offer is not a current entitlement. Check the operator’s live terms and your exact project. Save the applicable offer and approval rather than relying on a screenshot.
Return to the six homeowner decisions · Check assistance correctly · Read input, output and sizing