Get A Free Quote

Furnace price estimator for Ontario homes

A new gas furnace in Ontario typically costs $4,000 to $11,000 installed, before HST, depending mostly on the type of furnace. Answer three questions to narrow that to a range for your home.

Estimate your new furnace price

About 20 seconds. Typical Ontario installed prices, reviewed October 2026.

Above-grade living space. A rough number is fine.

Your utility bill shows this.

Not sure? Leave it on standard. Your result compares all three types.

Extras you expect tick any that apply

Runs in your browser. Nothing you enter is saved or sent.

What each furnace type typically costs in Ontario

Installed prices for a standard replacement in an existing home, before 13% HST. On furnace quotes across Ontario, the type of furnace moves the price more than anything else. For the full picture of furnace replacement cost, see what a complete quote includes.

Typical installed prices in Ontario, CAD, before 13% HST. Reviewed October 2026. Ranges, not quotes.
Furnace typeHow it heatsTypical installed
Single-stage95 to 96% AFUEFull output or off. The budget choice, and fine in many homes.$4,000 to $6,500
Two-stage96% AFUE, ECM blowerRuns on low most of the time. Quieter and more even.$5,500 to $8,000
Modulating97 to 98% AFUEAdjusts output in small steps, variable-speed blower. The most even heat.$7,000 to $11,000
Venting changes or a chimney liner
$300 to $1,500
Condensate pump
$150 to $350
Duct changes
$500 to $3,000+
Thermostat replacement
$150 to $600
Permit fee (municipal)
$75 to $300

Typical add-on prices in Ontario, before HST. Reviewed October 2026. Only some homes need each item.

What moves your number

Six things explain most of the gap between two homes, or two quotes.

  • The type of furnace

    Going from single-stage to modulating adds about $3,000 to $4,500 at the same home size.

  • Size and heat loss

    A bigger or draftier home needs more output and sometimes more duct work. Smaller homes sit near the bottom of each range.

  • Venting

    New furnaces vent through PVC pipe out a wall. If the old one shared a chimney with a gas water heater, that chimney may need a liner.

  • Condensate and access

    Without a floor drain close by you need a pump. Attic, crawlspace and tight closet installs take longer.

  • Ducts

    Old plenums rarely line up with a new cabinet. Undersized returns or leaky ducts add $500 to $3,000+.

  • Season

    Cold snaps fill installers' calendars. Spring to early fall usually brings more choice of dates.

Assumptions behind the estimate

We built these ranges from Ontario contractors' published prices, manufacturer and distributor list-price guidance and the scope of a typical install, and checked them in October 2026. Your own quote will still depend on the house, access, venting, ductwork, brand choice and time of year.

  • A standard replacement in an existing detached home with usable ductwork and venting.
  • Under 1,200 sq ft sits near the low end of each range; over 2,800 sq ft near the high end.
  • Each extra you tick adds its full typical range, because every job is different.
  • Not included: central air, gas line work, permits, electrical work, or a second furnace for a very large home.

Estimator versus a real quote

The estimate tells you what is typical. Only a written quote tells you what your home needs.

This estimator

  • Uses square footage as a stand-in for heat loss
  • Gives a typical range from public pricing
  • Cannot see your venting, ducts or access
  • Free, instant and anonymous

A written quote

  • Sized with a CSA F280 room-by-room heat loss calculation
  • Names the brand, model and every line item
  • Reflects your venting, ducts and access
  • A price you can sign, compare and hold a company to

Already holding a quote? Test it with the furnace quote checker

Ready for a real number? One request gets you a written quote for your home.

Get A Free Quote

Not on natural gas?

Propane homes pay much the same for the furnace itself. For oil and electric homes the estimator shows heat pump prices: ducted where the home has ducts, ductless where it has baseboards. If gas is on your street, ask the gas utility about a connection.

Whole-home ducted cold-climate heat pump
$9,000 to $18,000
Dual fuel (heat pump paired with a gas furnace)
$11,000 to $20,000
Single-zone ductless mini-split
$3,500 to $6,500

Typical Ontario prices in CAD, before 13% HST. Reviewed October 2026. Ranges, not quotes.

Rebates: check before you sign

Heat pump rebates do not cover a standalone gas furnace or a cooling-only air conditioner, so do not count on a rebate for a straight furnace or AC replacement.

Ontario's Home Renovation Savings program offers heat pump rebates with eligibility rules by heating fuel, home type and product, and it requires approval before installation. Program rules change often, so check the official pages before you buy and never sign because of a promised rebate amount. New applications for the Canada Greener Homes Loan ended on October 1, 2025.

Comparing options? See heat pump quotes

Common questions

Straight answers. If yours is not here, the company can answer it during your free estimate.

How much is a new furnace in Ontario?

Typical installed prices before HST are $4,000 to $6,500 for a single-stage gas furnace, $5,500 to $8,000 for two-stage and $7,000 to $11,000 for modulating. Venting, a condensate pump, duct changes or a new thermostat can add to that. With 13% HST, a $6,000 furnace becomes $6,780.

How accurate is a furnace price estimator?

It is accurate to a typical range, not to the dollar. It cannot see your venting, ducts, access or how much heat your house loses. Use it to spot a quote far outside the range, then rely on written quotes sized with a CSA F280 heat loss calculation for the real number.

Does a bigger house always mean a pricier furnace?

Usually, but by less than people expect. Furnaces come in size steps, and a well-insulated 2,400 sq ft home can need less heat than a drafty 1,600 sq ft one. That is why the estimator only nudges the price within each range, and why a heat loss calculation matters.

Should I rent or buy a furnace?

Buying usually costs less over time. Furnace rental plans in Ontario usually cost $40 to $80 a month on 10 to 15 year terms, which adds up to $4,800 to $14,400 in payments. Renting can help if paying upfront is not possible, but read the buyout schedule first. See financing versus renting.

Keep going

Turn the estimate into a real quote

Answer a few quick questions. A participating local HVAC company confirms the details and books a free in-home estimate with a written price.

Get A Free Quote

Takes under a minute. No cost, no commitment.