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Best of Ontario · Mississauga

8 Best HVAC Companies in Mississauga (2026)

By Priya Shah, Home Systems Writer · Reviewed by Grace Albright
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 Mississauga in 2026 are Pro House Maintenance, Real Deal HVAC and Olympic Heating and Air, plus five more top-rated local firms. We found 120 HVAC businesses on Google Maps and kept only Mississauga firms with 4.5 stars from 10 or more reviews and a TSSA registration we confirmed. Most households pay $5,000 to $7,500 for a new gas furnace.

Key takeaways
  • Of 58 top-rated Mississauga HVAC firms, we looked them up in TSSA's registry in rank order until 12 registrations were confirmed.
  • The 7 ranked Mississauga firms hold 4.9 to 5.0 Google stars, from 62 to 911 reviews each.
  • Most households pay $5,000 to $7,500 for a new gas furnace, per Reliance's 2026 guide.
  • Mississauga requires a trade licence for heating (HVAC) firms, and gas work also needs a TSSA registration.
  • A cold-climate heat pump in a gas-heated home qualifies for up to $2,000 back in Ontario.
The best HVAC companies in Mississauga 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 Mississauga
2 Real Deal HVAC Homes and commercial rooftop units TSSA registration 5.0 (180 reviews) Mississauga
3 Olympic Heating & Air Inc. An owner-operator with no overtime charges TSSA registration 5.0 (124 reviews) Service area only
4 Leite Group Snowmelt, radiant floors and boilers TSSA registration 5.0 (74 reviews) Mississauga
5 Syncare Comfort Same-day emergency calls TSSA registration 5.0 (62 reviews) Mississauga
6 Furnace King Home Services Heat pump installs with rebate paperwork TSSA registration 4.9 (911 reviews) Mississauga
7 Glors Heating and Air Conditioning A 10-year parts and labour warranty TSSA registration 4.9 (531 reviews) Mississauga
8 Absolute Comfort Heating & Air Conditioning In-house crews with no subcontractors TSSA registration 4.9 (235 reviews) Mississauga

Who are the best HVAC companies in Mississauga in 2026?

The best HVAC companies in Mississauga in 2026 are Pro House Maintenance, Real Deal HVAC and Olympic Heating and Air. Leite Group, Syncare Comfort, Furnace King, Glors Heating and Absolute Comfort complete the top eight. The ranked firms hold 4.9 to 5.0 stars from 62 to 911 Google reviews, and each has a TSSA registration we confirmed.

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

Pro House Maintenance is a free service that matches Mississauga homeowners with HVAC contractors who passed our checks: TSSA, WSIB, insurance, references and a background check. You share the job once, compare several written quotes and pick the one you want. It ranks first because the vetting is done for you.

Mississauga has 58 HVAC firms with strong Google ratings and their own websites, and we had to work down that list to confirm 12 TSSA registrations. Pro House Maintenance does those checks before you call, from Port Credit to Streetsville.

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 Mississauga →

2. Real Deal HVAC: best for homes and commercial rooftop units

Real Deal HVAC is a Mississauga firm with a 5.0 Google rating from 180 reviews. Its site lists 24/7 help across Mississauga and nearby cities, for homes and commercial rooftop units. It also offers 0% financing on qualifying installs, with payments from $42 a month.

  • Watch-outs: The 0% rate applies only to qualifying installs, so ask which ones qualify.
  • Best for: One firm for a house and a shop.

3. Olympic Heating & Air Inc.: best for an owner-operator with no overtime charges

Olympic Heating and Air is a family-run firm that has served the GTA since 2001, its site says. It holds a 5.0 Google rating from 124 reviews. The owner does all the work, per the site, with no overtime charges 7 days a week and a 1-year parts and labour warranty on repairs.

  • Watch-outs: Its TSSA registration expires October 20, 2026, so check the directory for a renewal.
  • Best for: Seeing the same technician every time.

4. Leite Group: best for snowmelt, radiant floors and boilers

Leite Group is a Mississauga firm on Hanson Road with a 5.0 Google rating from 74 reviews. Its site says it focuses on snowmelt systems, in-floor and radiant heat, boilers and water heaters. It also puts in or moves ductwork for custom homes and renovations.

  • Watch-outs: We found no warranty terms or founding year on its site, so ask for both in writing.
  • Best for: Custom homes, heated driveways and hot-water heating.

5. Syncare Comfort: best for same-day emergency calls

Syncare Comfort is a Mississauga firm with a 5.0 Google rating from 62 reviews. Its site says it is fully licensed, bonded and insured, with same-day 24/7 help for emergencies. It works on homes and businesses, and it lists heat pump repairs and installs.

  • Watch-outs: It has the fewest reviews here, and its site posts no warranty terms, so get them in your quote.
  • Best for: A no-heat call that cannot wait until Monday.

6. Furnace King Home Services: best for heat pump installs with rebate paperwork

Furnace King is a Mississauga firm with a 4.9 Google rating from 911 reviews, the most on this list. Its site cites over 43 years of experience. For heat pumps, it lists a free in-home assessment with Manual J sizing and says it handles permits, inspections and rebate paperwork.

  • Strengths: It also offers plumbing, so one firm can handle a water heater and its pipes.
  • Watch-outs: Its site says it guarantees all its work but posts no terms, so ask for the labour warranty in writing.
  • Best for: Switching to a heat pump and claiming the rebate.

7. Glors Heating and Air Conditioning: best for a 10-year parts and labour warranty

Glors Heating is a Mississauga firm with a 4.9 Google rating from 531 reviews. Its site offers 10 years of parts and labour warranty and cites over 17 years of experience. It works from Mississauga, Brampton and Milton bases and offers 24/7 furnace and AC repair.

  • Watch-outs: Its services page ties up to 10 years of parts and labour to Trane furnaces, so ask which equipment the warranty covers.
  • Best for: A new furnace or AC where warranty length matters.

8. Absolute Comfort Heating & Air Conditioning: best for in-house crews with no subcontractors

Absolute Comfort is a family-owned Mississauga firm with a 4.9 Google rating from 235 reviews. Its site says it is an HRAI member, follows TSSA and WSIB rules, and does not use subcontractors. It also puts in radiant floor heat and custom home systems.

  • Watch-outs: The site states WSIB compliance but shows no account number, so ask for the clearance certificate itself.
  • Best for: Homes in Mississauga, Oakville and Burlington.

How much does a new furnace cost in Mississauga?

Most households pay $5,000 to $7,500 for a new gas furnace, according to Reliance’s 2026 pricing guide. Enercare’s 2026 guide puts a central air conditioner at $3,995 to $6,000, installed. A central heat pump starts around $6,995 plus HST, and Ontario rebates can cut that.

Installed HVAC prices from two Ontario providers (CAD, 2026 guides)
JobTypical cost (CAD)Source
Gas furnace, most households$5,000 to $7,500Reliance, 2026
Two-stage gas furnace$6,000 to $8,000Reliance, 2026
Central air conditioner$3,995 to $6,000Enercare, 2026
Central heat pumpFrom $6,995 plus HSTEnercare, 2026
Ductless heat pumpFrom $4,500 plus HSTEnercare, 2026

Ontario’s Home Renovation Savings program pays up to $2,000 for a cold-climate heat pump in a home heated with Enbridge gas, and up to $7,500 in homes heated by electricity, oil, propane or wood. You do not need a home energy assessment first.

Reliance notes that venting, wiring or gas line upgrades raise the final bill, so ask each contractor to list them. For data on system lifespans and heat pump growth, read our HVAC statistics for 2026. When you are ready, get free HVAC service quotes in Mississauga.

How do you choose an HVAC company in Mississauga?

Choose a Mississauga HVAC company by checking two licences: a TSSA registration for gas work and the city’s heating (HVAC) trade licence. Then check WSIB clearance and liability insurance. Get any home job over $50 in writing, and keep the deposit to 10% or less.

  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. Mississauga requires a trade business licence for building renovation, plumbing and heating (HVAC) work. See the Mississauga trade business licensing 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’s directory says it plainly: “Registered Fuels Contractors are the only businesses that are legally authorized to do fuels related work in Ontario.” It also warns that a listing is not an endorsement, so the other checks still count.

Before we match you with a Mississauga contractor, Pro House Maintenance checks its TSSA registration, WSIB clearance and insurance. If your attic is thin, you can also compare insulation quotes in Mississauga in the same week.

How did we rank these Mississauga HVAC companies?

We ranked Mississauga HVAC companies on data, not ads. Our search found 120 HVAC businesses on Google Maps. We kept 58 Mississauga firms with a website of their own and 4.5 stars or higher from 10 or more reviews, then required a TSSA registration, which we confirmed for 12.

How we narrowed 120 Mississauga HVAC companies to 7 (data checked October 2, 2026)
StepBusinesses remaining
Found on Google Maps120
Primary Google category is a HVAC company108
Open, with a website of its own92
In Mississauga (by address or Google map pin)90
4.5+ stars from 10+ Google reviews58
Website readable when checked44
TSSA registration confirmed (26 checked in rank order until 12 confirmed)12
Listed on this page (top ranked)7

We checked the 58 in TSSA’s registry in score order and stopped at 12 confirmed. We could not match 14 by phone, website or name, and 32 were never looked up. That does not mean any of them are unregistered, only that we did not confirm one.

The score blends each rating with its review count, so Syncare’s 5.0 from 62 reviews edges Furnace King’s 4.9 from 911. We checked it all on October 2, 2026, and 2 of these registrations are due to expire by December 31. Spot an error? Please tell our editors what needs fixing.

What do Mississauga homeowners ask before hiring an HVAC company?

Mississauga homeowners want clear answers on furnace and AC prices, city licences and rebates before they hire. These answers draw on TSSA, the City of Mississauga, Ontario's Home Renovation Savings program and 2026 price guides from two large Ontario heating firms. Each one stands on its own.

How much does a new furnace cost in Mississauga?

Most households pay $5,000 to $7,500 for a new gas furnace, according to Reliance's 2026 pricing guide. A single-stage furnace runs $4,500 to $6,000 installed and a two-stage model $6,000 to $8,000. Enercare puts a high-efficiency gas furnace at $5,000 to $7,000 or more.

Does an HVAC company need a licence in Mississauga?

Yes. Mississauga requires a trade business licence for heating (HVAC) businesses. For gas work, TSSA states that registered fuels contractors are the only businesses legally authorized to do fuels related work in Ontario. Check both: the city licence with Mississauga and the registration in TSSA's online directory.

How much does central air conditioning cost in Mississauga?

Enercare's 2026 guide puts a central air conditioner at $3,995 to $6,000 with a standard install. Reliance says most homeowners spend $5,500 to $9,000 to replace a standard central unit, and high-efficiency models sit at the top of that range. Get two or three written quotes to see where you fall.

Can I get a heat pump rebate in Mississauga?

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 gas, and up to $7,500 in homes heated by electricity, oil, propane or wood. No home energy assessment is required, but the model must be on Natural Resources Canada's list.

Is Pro House Maintenance free to use?

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

Where can you find HVAC companies near Mississauga?

The closest HVAC companies lists to Mississauga cover Milton (20 km away), Toronto (22 km away) and Vaughan (30 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. City of Mississauga, Trades business licensing
  3. Home Renovation Savings program (Save on Energy and Enbridge Gas), Heat pump rebates
  4. Reliance Home Comfort, How Much Does a Furnace Cost in Canada? (2026 Pricing Guide)
  5. Reliance Home Comfort, How Much Does a Home Air Conditioner Cost in Canada?
  6. Enercare, The 2026 Buyer's Guide to Home Air Conditioners
  7. Enercare, 2026 Heat Pump Buyer's Guide for Homeowners
  8. Enercare, New Furnace Installation in Ontario
  9. Government of Ontario, Your rights when starting home renovations or repairs
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 Grace Albright, Content Reviewer.