HVAC Replacement Cost in Ontario: 2026 Price Guide

Ontario HVAC prices observed in July 2026

Ontario does not publish a single official retail price list for residential HVAC replacement. The table is a transparent comparison of public prices available on July 22, 2026. It is intentionally labelled as a market sample. Some sellers quote a starting price, others publish a range, and tax and installation scope are not standardized.

The furnace, AC, and combination examples come from public Ontario contractor or provider pages.[1][2][3][4][5]The heat-pump range comes from the City of Toronto's homeowner guidance rather than a seller.[6] None of these figures is a quote for your home.

What can push the final total above the sample

• larger-capacity, two-stage, variable-capacity, or premium equipment;
• duct resizing, return-air changes, zoning, or difficult attic access;
• new venting, gas-line work, condensate drainage, or chimney changes;
• an indoor coil or line set that is not compatible with the new outdoor unit;
• new circuits, a load calculation, a panel change, or a service upgrade;
• crane, parking, condominium, heritage, asbestos, or restoration work;
• longer labour coverage, accessories, financing charges, and HST.

This is why a price without exact indoor and outdoor model numbers and an itemized scope is not comparable. For equipment-specific detail, use the separate guides to central air-conditioner cost, furnace selection, and cold-climate heat pumps.

Current Ontario heat-pump rebates

Home Renovation Savings is co-delivered by Save on Energy and Enbridge Gas. Save on Energy currently advertises up to $7,500 for a cold-climate air-source heat pump and up to $12,000 for a ground-source system.[8]The amount and route depend on the home's primary heating fuel.

The program calculates air-source incentives from minimum rated heating capacity at 8.3 C (47 F), not simply the nominal tonnage in a product name. It also requires an active model on Natural Resources Canada's qualified-products list, an eligible home, a participating contractor, and approval before installation.[7] Ask the contractor to show the exact indoor/outdoor combination and the capacity used in the application.

Do not treat the maximum advertised amount as automatic. For broader program comparisons, see the Ontario home-energy rebates guide.

Permits and qualified trades: check the actual scope

Permit requirements are municipal and project-specific. Toronto publishes a stand-alone mechanical HVAC permit route and lists a $214.79 residential furnace-replacement fee effective January 1, 2026.[10] Mississauga specifically lists replacement with a higher-efficiency furnace among work requiring a building permit.[11] Those examples are evidence that permits can apply, not proof that every like-for-like replacement has the same rule everywhere in Ontario.

New electrical work generally requires an Electrical Safety Authority notification before work begins.[12]For gas or other fuel work, verify the business in TSSA's authorized heating-fuel contractor registry.[13] Refrigeration and Air Conditioning Systems Mechanic is a compulsory trade in Ontario, and Ontario separately requires certification to handle regulated refrigerants.[14][15]

Replace one component or the whole system?

Replacing everything together can reduce duplicate labour and solve compatibility problems, but it is not automatically the best-value answer. Ask each bidder for three alternatives when they are technically possible:

1. replace only the failed or near-end-of-life component;
2. replace the furnace and cooling system together; and
3. replace the cooling equipment with a qualifying heat pump, using an existing or new backup system.

Each alternative should identify the exact matched equipment, efficiency, sizing result, remaining equipment life, compatibility, warranties, gross price, confirmed rebate, and net price. For heat pumps, a square-foot rule is not enough: NRCan's Canadian toolkit starts with heating and cooling loads and then compares equipment and backup-control strategies.[9]

A line-by-line quote comparison

Ontario recommends at least three written estimates and says the selected estimate should form part of the contract. If an estimate is included, the final price generally cannot exceed it by more than 10 percent unless you approve changed work or a changed price.[16]

Use the HVAC quote-comparison checklist for a printable decision process, and verify contractor warning signs in the Ontario contractor red-flags guide.

Bottom line

Use $7,500 as an observed starting point and $8,000 to $14,000 as one published planning range for a standard Ontario furnace-and-AC replacement, not as a promised provincial average. A defensible decision comes from three comparable written quotes with exact model combinations, calculated loads, complete installation scope, permits, warranties, tax, and only confirmed rebates. The cheapest headline number is not the cheapest complete job if major scope is missing.

Frequently asked questions