Enter the heated floor area and your home's vintage — insulation drives the load, from 45 BTU per square foot pre-1960 down to 25 in a new build — plus the ceiling height. The calculator recommends furnace output and A/C tonnage, then prices your pick: mid-efficiency or 96% two-stage furnace, a furnace-plus-A/C bundle, or a cold-climate heat pump. The default 1,800 sq ft home sizes at 64,000 BTU/h and 3.0 tons, with the two-stage furnace at $5,200–8,200 installed.
It depends on the envelope: about 45 BTU per square foot for a poorly insulated pre-1960 home, 36 for 1960–2000 construction, 30 for 2000s builds and 25 for new high-efficiency homes, with vaulted ceilings adding up to 25%. A contractor confirms with a full heat-loss calculation on site.
A mid-efficiency furnace runs $3,400–5,200 and a 96%-plus two-stage $5,200–8,200. Bundling A/C brings the package to $8,200–13,500, a cold-climate heat pump prices at $9,500–17,000, and a heat pump with backup furnace $13,000–22,000.
Ask about the current federal and Ontario rebates on cold-climate heat pumps — they can be worth several thousand dollars and materially change the comparison against a furnace-plus-A/C bundle. Programs change, so confirm what is open when you are quoting.
Ductwork modifications run $900–3,400 where airflow needs correcting, a smart thermostat $280–650, an HRV air exchanger $1,800–3,600, a chimney liner $900–2,100, and removing an old oil tank $700–1,800.
Every calculator runs from one config: your name, your colours, your prices. Brand it below, open any tool from the catalogue, and finish a quote — the lead lands in the table here the moment the estimate unlocks. On your own site the widget works exactly like this.
| Captured | Name | Contact | Tool | Job value |
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| No leads yet — run any tool in the catalogue and finish the quote. | ||||
| Tenants signed | Avg. rent | Monthly | Annual |
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