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Best of Ontario · Toronto

8 Best HVAC Companies in Toronto (2026)

By Priya Shah, Home Systems Writer · Reviewed by Daniel Osei
Published October 2, 2026 · Updated October 2, 2026

Google ratings and registry licences checked October 2, 2026.

Disclosure: Pro House Maintenance publishes this list and ranks its own free matching service first. Every other business is ranked by the published method below, and no business paid to be listed.

The best HVAC companies in Toronto in 2026 are Pro House Maintenance, Thermex Heating and Air Conditioning and Affordable Climate Solutions, plus five more top-rated firms. We started with 412 HVAC businesses on Google Maps and kept only firms with 4.5 stars from 10 or more reviews and a confirmed TSSA registration. A new furnace for a typical GTA home costs $5,500 to $8,000 installed.

Key takeaways
  • We looked up 26 top-rated Toronto HVAC firms in TSSA's registry, in rank order, to confirm 12 active registrations.
  • All 7 ranked Toronto HVAC firms hold a perfect 5.0 Google rating, from 67 to 179 reviews each.
  • A new gas furnace for a 1,500 to 2,500 square foot GTA home costs $5,500 to $8,000 installed.
  • Ontario's Home Renovation Savings program pays up to $2,000 toward a cold-climate heat pump in a gas-heated home.
  • TSSA counts some 9,000 registered fuels contractors in Ontario, and its online directory lists them.
The best HVAC companies in Toronto at a glance (ratings and licences checked Oct 2, 2026)
RankCompanyBest forCredentialsGoogle ratingBased in
1 Pro House Maintenance Comparing vetted HVAC companies for free Every pro: licences, WSIB, insurance, references, background Not applicable (matching service) Serves Toronto
2 Thermex Heating and Air Conditioning Inc. Fast furnace installs and red tag removal TSSA registration 5.0 (179 reviews) North York
3 Affordable Climate Solutions Scarborough and Durham Region homes TSSA registration 5.0 (175 reviews) Scarborough
4 ACH Heating and Air Conditioning Inc. Posted service-call and maintenance prices TSSA registration 5.0 (134 reviews) Etobicoke
5 Five Lions Heating & Cooling Inc. Boilers and radiant floor heating TSSA registration 5.0 (123 reviews) Scarborough
6 Infinite Home Comfort Monthly payments and water treatment TSSA registration 5.0 (100 reviews) Scarborough
7 Artisan Air Heating and Air Conditioning Free diagnostics and a 10-year install warranty TSSA registration 5.0 (82 reviews) Scarborough
8 Ultimate Mechanical Solution Inc. Mitsubishi ductless systems and boilers TSSA registration 5.0 (67 reviews) North York

Who are the best HVAC companies in Toronto in 2026?

The best HVAC companies in Toronto in 2026 are Pro House Maintenance, Thermex Heating and Air Conditioning and Affordable Climate Solutions. ACH, Five Lions, Infinite Home Comfort, Artisan Air and Ultimate Mechanical Solution complete the top eight. Each ranked company holds a 5.0 Google rating and an active TSSA registration. Pro House Maintenance ranks first as our matching service.

1. Pro House Maintenance: best for comparing vetted HVAC companies for free

Pro House Maintenance is a free service that matches Toronto homeowners with HVAC contractors who have passed our checks: TSSA listing, WSIB clearance, insurance, references and a background check. You describe the job once, compare several written quotes and hire the one you choose. It ranks first because it does the vetting for you.

Toronto has 166 HVAC firms with strong Google ratings, and it took us 26 registry lookups to confirm 12 TSSA registrations. Pro House Maintenance runs those checks before you call, from Etobicoke to Scarborough, so you compare real quotes instead of guessing.

What we check before a HVAC contractor joins our network
  • Trade licences. We confirm an active TSSA fuels contractor registration. TSSA says registered fuels contractors are the only businesses legally authorized to do fuels related work in Ontario.
  • WSIB clearance and liability insurance. We confirm a current WSIB clearance and commercial general liability insurance before a pro joins our network.
  • Reviews and references. We read public reviews and speak with past clients before a pro is accepted, looking for patterns, not one-off complaints.
  • Background checks. We run background checks before a pro is matched with homeowners, because the people in your home matter as much as the work.
How working with Pro House Maintenance works
  1. Tell us about the job. Share the project and your address through the free quote form. It takes about a minute.
  2. Get matched with vetted pros. We match you with several pros who have already passed our checks and serve your area.
  3. Compare written quotes. Each pro gives you a written quote, so you can compare price, scope and timing side by side.
  4. Hire with a guarantee behind you. You choose who to hire. Work from a pro we matched you with is backed by our satisfaction guarantee; ask us for the terms before you sign.
Cost to you: Free for homeowners. There is no charge to request quotes or to be matched.
Get matched with vetted HVAC companies in Toronto →

2. Thermex Heating and Air Conditioning Inc.: best for fast furnace installs and red tag removal

Thermex is a family business in North York with a 5.0 Google rating from 179 reviews, the most on this list. Its site says it puts in a new furnace the same day or next day, even on weekends. It also lists Enbridge red tag removal, gas lines and water heaters.

  • Strengths: The site states it charges no extra for weekend, holiday or after-hours repairs.
  • Watch-outs: The site says installs carry a guarantee but posts no terms, so ask for them in writing.
  • Best for: A furnace that dies in a cold snap.

3. Affordable Climate Solutions: best for Scarborough and Durham Region homes

Affordable Climate Solutions lists a Scarborough address on Google and has a 5.0 rating from 175 reviews. Its site says the firm is based in Pickering and offers 24/7 HVAC service, water heater work and air duct cleaning across the GTA.

  • Watch-outs: Its site centres on Pickering, Ajax and Whitby, so confirm it serves your part of Toronto.
  • Best for: Scarborough and east-end homes.

4. ACH Heating and Air Conditioning Inc.: best for posted service-call and maintenance prices

ACH is a locally owned firm in Etobicoke with a 5.0 Google rating from 134 reviews. Its site showed a $120 service call and a $150 upkeep visit when we checked. The site also lists 24/7 repairs and work across Toronto and Mississauga.

  • Watch-outs: Posted prices change, so confirm the rate and what it covers before the visit.
  • Best for: Knowing the call-out price up front.

5. Five Lions Heating & Cooling Inc.: best for boilers and radiant floor heating

Five Lions Heating and Cooling is a locally owned Scarborough firm with a 5.0 Google rating from 123 reviews. Its site says it focuses on hot-water heat, such as snow melt systems and radiant in-floor heat. The site also lists boilers, gas lines, 24-hour help and virtual visits.

  • Watch-outs: Its home page cites over 20 years of experience and its about page cites over 15, so ask which applies.
  • Best for: Homes heated by a boiler or a radiant floor system.

6. Infinite Home Comfort: best for monthly payments and water treatment

Infinite Home Comfort is a Scarborough firm with a 5.0 Google rating from 100 reviews. Its site says it is TSSA registered and fully insured. It advertises furnaces from $39 a month on approved credit, plus water softeners and drinking water filters.

  • Watch-outs: Its TSSA registration expires November 7, 2026, so check the directory for a renewal before you sign.
  • Best for: Paying for a new furnace monthly.

7. Artisan Air Heating and Air Conditioning: best for free diagnostics and a 10-year install warranty

Artisan Air is a Scarborough firm with a 5.0 Google rating from 82 reviews. Its site offers a $0 diagnostic visit and a full 10-year warranty on all HVAC installs. It also lists red tag removal and same-day visits at any hour.

  • Watch-outs: Ask whether the 10-year warranty covers parts, labour or both.
  • Best for: A free diagnosis before you choose repair or replace.

8. Ultimate Mechanical Solution Inc.: best for Mitsubishi ductless systems and boilers

Ultimate Mechanical Solution is a North York firm on Keele Street with a 5.0 Google rating from 67 reviews. Its site says it is an authorized dealer of Mitsubishi and American Standard ductless units. It also services boilers, combi-boilers and tankless water heaters, with 24/7 emergency service and same-day repairs.

  • Watch-outs: Its site promises long-term parts and labour warranties but posts no terms, so get them in writing.
  • Best for: Homes without ducts, or homes heated by a boiler.

How much does a new furnace cost in Toronto?

A new gas furnace for a 1,500 to 2,500 square foot GTA home costs $5,500 to $8,000 installed, according to a 2026 GTA price guide. The same guide prices a standard central air conditioner at $3,200 to $5,500. A cold-climate heat pump costs $6,500 to $14,000 before rebates.

Installed HVAC costs in the GTA and Ontario (CAD)
JobTypical cost (CAD)Source
Gas furnace, 1,500 to 2,500 sq ft home$5,500 to $8,000EcoFrost, 2026
Central air conditioner (standard)$3,200 to $5,500EcoFrost, 2026
Cold-climate heat pump$6,500 to $14,000EcoFrost, 2026
Furnace tune-up$129 to $249EcoFrost, 2026
High-efficiency gas furnace (Ontario)$5,000 to $7,000+Enercare

Rebates shrink the heat pump price. Ontario’s Home Renovation Savings program pays $500 per ton, up to $2,000, for a cold-climate heat pump in a home heated with Enbridge gas. Homes heated by electricity, oil, propane or wood get up to $7,500.

Older Toronto houses can need venting upgrades, and the GTA guide says a venting change alone can add $300 to $800. For data on system age and running costs, see our 2026 HVAC statistics report. To price your own job, compare free HVAC quotes in Toronto.

How do you choose an HVAC company in Toronto?

Choose a Toronto HVAC firm by checking its TSSA listing first. TSSA says only registered fuels contractors may legally do fuels work in Ontario. Then check WSIB clearance, liability insurance and the city licence it holds. Get any renovation contract over $50 in writing.

  1. Check the licence. TSSA says registered fuels contractors are the only businesses legally authorized to do fuels related work in Ontario, which includes gas furnaces. Search the company in TSSA's contractor directory.
  2. Confirm WSIB clearance. Ask for the company’s WSIB account number and confirm a current clearance on WSIB’s free eClearance lookup.
  3. Ask for proof of liability insurance. A certificate of commercial general liability insurance should name the company that will do the work.
  4. Check the city licence. Toronto licenses building renovators, plumbing contractors and heating contractors under Chapter 545. Check the categories on the City of Toronto licence types page.
  5. Get it in writing. Under Ontario law, any home renovation contract worth more than $50 must be in writing, and the final price cannot exceed an estimate by more than 10% unless you agree (Ontario consumer protection rules).
  6. Keep the deposit small. Ontario recommends a down payment of no more than 10%, and never paying in full before the work is done.

TSSA puts it plainly: “Under Ontario law, furnaces and fuels-fired appliances must be maintained by TSSA-registered contractors.” Its fuels contractor directory notes that the city shown is only the main office, so a Pickering firm can still serve Toronto.

Pro House Maintenance confirms the TSSA registration, WSIB clearance and insurance before a contractor is matched with you. If your gas water heater is old too, get water heater installation quotes in Toronto at the same time.

How did we rank these Toronto HVAC companies?

We ranked Toronto HVAC companies with data, not ads. Our search found 412 HVAC businesses on Google Maps across Toronto, Etobicoke, Scarborough and North York. We kept 166 Toronto firms with a website of their own and 4.5 stars from 10 or more reviews, then required a TSSA registration.

How we narrowed 412 Toronto HVAC companies to 7 (data checked October 2, 2026)
StepBusinesses remaining
Found on Google Maps412
Primary Google category is a HVAC company352
Open, with a website of its own285
In Toronto (by address or Google map pin)278
4.5+ stars from 10+ Google reviews166
Website readable when checked151
TSSA registration confirmed (26 checked in rank order until 12 confirmed)11
Listed on this page (top ranked)7

We looked up the 166 in TSSA’s registry in score order and stopped at 12 confirmed, after 26 lookups. We could not match 14 by phone, website or name, and 140 were never looked up. That does not mean those firms are unregistered, only that we did not confirm one.

We also require a website we can read. One of the 12 failed that check, which left 11 eligible firms for this list.

The score blends each Google rating with its review count, so a 5.0 from 179 reviews beats a 5.0 from 67. We checked every rating and registration on October 2, 2026, and recheck every 90 days.

Facts marked “company website” come from each firm’s own pages, and we keep the exact quotes on file. Spot an error? Please report a correction to our team.

What do Toronto homeowners ask before hiring an HVAC company?

Toronto homeowners want straight answers on furnace prices, licences, rebates and upkeep before they book. The answers below draw on TSSA, Ontario's Home Renovation Savings program and 2026 price guides from Ontario heating firms. Each answer stands alone, so jump to the one you need.

How much does a new furnace cost in Toronto?

A new gas furnace for a 1,500 to 2,500 square foot GTA home costs $5,500 to $8,000 installed, according to a 2026 GTA price guide. Enercare puts a high-efficiency gas furnace in Ontario at $5,000 to $7,000 or more. Large homes, new venting and duct work cost more.

Do HVAC companies need a licence in Ontario?

Yes, for fuels work such as a gas furnace. TSSA states that registered fuels contractors are the only businesses legally authorized to do fuels related work in Ontario, and its online directory lists them. Toronto also issues heating contractor licences, so ask which city licence your firm holds.

Are there heat pump rebates in Toronto?

Yes. Ontario's Home Renovation Savings program pays up to $2,000 for a cold-climate air source heat pump in a home heated with Enbridge natural gas. Homes heated by electricity, oil, propane or wood can get up to $7,500. The model must be on Natural Resources Canada's qualified products list.

How much is a furnace tune-up in Toronto?

Most furnace tune-ups in Ontario run $129 to $249, depending on what the visit includes, per a 2026 GTA price guide. Enercare advises a licensed technician check and clean all major parts every 1 to 2 years, ideally in summer before the weather cools.

Is Pro House Maintenance free to use?

Yes. Pro House Maintenance is free for homeowners. You describe your heating or cooling job once, get matched with several HVAC contractors who passed TSSA, WSIB, insurance, reference and background checks, and compare written quotes. You choose who to hire, and our satisfaction guarantee backs the work.

Where can you find HVAC companies near Toronto?

The closest HVAC companies lists to Toronto cover Mississauga (22 km away), Vaughan (22 km away) and Milton (43 km away). Each list follows the same method: 4.5-star Google ratings from 10 or more reviews, official registry checks where Ontario requires a licence, and free vetted matching from Pro House Maintenance at number one.

Sources
  1. Technical Standards and Safety Authority, Authorized Heating Fuel Contractors directory
  2. Technical Standards and Safety Authority, Be Fuels Wise: Hire Registered and Certified Professionals (March 1, 2024)
  3. Home Renovation Savings program (Save on Energy and Enbridge Gas), Heat pump rebates
  4. EcoFrost Heating and Cooling, HVAC Pricing Guide 2026
  5. EcoFrost Heating and Cooling, Furnace Tune-Up Cost in Ontario: 2026 Pricing Breakdown
  6. Enercare, New Furnace Installation in Ontario
  7. Enercare, The 2026 Buyer's Guide to Furnaces
  8. Government of Ontario, Your rights when starting home renovations or repairs
  9. City of Toronto, Business licence types (Municipal Code Chapter 545)
Priya Shah
Home Systems Writer

Priya writes about home systems, including HVAC, plumbing, electrical, and water heaters, for Pro House Maintenance. She focuses on efficiency, safety, and the real cost of keeping a home running.

Reviewed for accuracy by Daniel Osei, Exteriors Writer.