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Best of Ontario · Milton

8 Best HVAC Companies in Milton (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 Milton in 2026 are Pro House Maintenance, AERO HVAC and Constant Breeze HVAC, plus five more top-rated local firms. We found 55 HVAC businesses on Google Maps, kept 18 Milton firms with 4.5 stars from 10 or more reviews, and checked every one in TSSA's registry. A single-stage gas furnace costs $4,500 to $6,000 installed.

Key takeaways
  • We checked all 18 top-rated Milton HVAC firms in TSSA's registry and confirmed a registration for 12.
  • The 7 ranked Milton firms hold 4.9 to 5.0 Google stars, from 26 to 130 reviews each.
  • A single-stage gas furnace costs $4,500 to $6,000 installed, and a modulating model $8,400 or more.
  • Ontario pays up to $7,500 toward a cold-climate heat pump, but new build homes do not qualify.
  • 3 of the 7 ranked Milton registrations are due to expire by December 31, 2026, so check before you sign.
The best HVAC companies in Milton 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 Milton
2 AERO HVAC Furnaces, fireplaces and humidifiers TSSA registration 5.0 (130 reviews) Milton
3 Constant Breeze HVAC AC and furnace installs with a yearly plan TSSA registration 5.0 (92 reviews) Service area only
4 Modern Mechanical Solutions Home and commercial systems since 1999 TSSA registration 5.0 (50 reviews) Milton
5 Airprime HVAC Inc Renting, buying or financing a system TSSA registration 5.0 (34 reviews) Milton
6 Baker Home Comfort Services Repairs in Milton, Burlington and Oakville TSSA registration 4.9 (76 reviews) Service area only
7 Extra Air System Carrier systems and gas fireplaces TSSA registration 4.9 (74 reviews) Milton
8 Bailey Heating & Cooling LTD A Milton firm operating since 1960 TSSA registration 4.9 (26 reviews) Milton

Who are the best HVAC companies in Milton in 2026?

The best HVAC companies in Milton in 2026 are Pro House Maintenance, AERO HVAC and Constant Breeze HVAC. Modern Mechanical Solutions, Airprime HVAC, Baker Home Comfort, Extra Air System and Bailey Heating and Cooling complete the top eight. The ranked firms hold 4.9 to 5.0 stars from 26 to 130 Google reviews.

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

Pro House Maintenance is a free service that matches Milton homeowners with HVAC contractors who passed our checks: TSSA registration, WSIB clearance, insurance, references and a background check. You describe the job once, compare several written quotes and hire the firm you pick. It ranks first because the vetting happens before you call.

Milton is a smaller market, with 18 HVAC firms that meet our rating bar. We checked all 18 in TSSA’s registry and confirmed 12. Pro House Maintenance runs the same checks for you, whether you live in Old Milton, Timberlea or Hawthorne Village.

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 Milton →

2. AERO HVAC: best for furnaces, fireplaces and humidifiers

AERO HVAC is a Milton firm on Leger Way with a 5.0 Google rating from 130 reviews, the most on this list. Its site covers sales, service, installs and upkeep for heating, cooling, air quality and fireplaces. It lists phone lines for both the GTA and Hamilton.

  • Watch-outs: Its 20-year warranty runs through manufacturers, subject to eligibility, so ask which products qualify. Its TSSA registration expires December 19, 2026.
  • Best for: A new furnace, a fireplace or a whole-home humidifier.

3. Constant Breeze HVAC: best for AC and furnace installs with a yearly plan

Constant Breeze HVAC is based in Milton, its site says, and holds a 5.0 Google rating from 92 reviews. Its installs include a free in-home sizing visit, removal of the old system and help registering the warranty, with a yearly maintenance plan as an add-on.

  • Watch-outs: Its pages list both 24/7 hours and 9 AM to 5 PM, so ask when it takes urgent calls. Its TSSA registration expires November 11, 2026.
  • Best for: Replacing a central AC and furnace at the same time.

4. Modern Mechanical Solutions: best for home and commercial systems since 1999

Modern Mechanical Solutions is a Milton firm with a 5.0 Google rating from 50 reviews. Its site says it has built its name since 1999 and offers 24/7 emergency service. It lists ductless units, chillers, boilers, heat pumps, fireplaces and ductwork for homes and businesses.

  • Watch-outs: We found no warranty terms or prices on its site, so ask for both in your quote.
  • Best for: One firm for a home and a commercial space.

5. Airprime HVAC Inc: best for renting, buying or financing a system

Airprime HVAC is a Milton firm on Rayner Court with a 5.0 Google rating from 34 reviews. Its site says it was founded in 2010 and lets you rent, purchase or finance a system. It lists hours of 7 am to 11 pm every day.

  • Watch-outs: Its about page says it is in Etobicoke, and its $7,100 heat pump rebate claim differs from the current program. Confirm both.
  • Best for: Homeowners who want to rent rather than buy.

6. Baker Home Comfort Services: best for repairs in Milton, Burlington and Oakville

Baker Home Comfort holds a 4.9 Google rating from 76 reviews and has no public street address on Google. Its site bills it as an HVAC repair firm for Milton, Burlington and Oakville, with over 20 years of experience. It covers cooling, heating and fireplaces, and assesses each job before giving an estimate.

  • Watch-outs: We found no warranty terms on the page we read, and its TSSA registration expires November 13, 2026. Ask about both.
  • Best for: A repair visit before you decide on a replacement.

7. Extra Air System: best for Carrier systems and gas fireplaces

Extra Air System is a Milton firm on Steeles Avenue East with a 4.9 Google rating from 74 reviews. Its site says Carrier has authorized it to sell and service Carrier products, and it installs Napoleon fireplaces. It also lists a second location in Mississauga and 24/7 emergency service.

  • Watch-outs: Its site says both “over 25 years” and “over a decade”, so ask which applies.
  • Best for: Homeowners set on a Carrier furnace, AC or heat pump.

8. Bailey Heating & Cooling LTD: best for a Milton firm operating since 1960

Bailey Heating and Cooling is a family-owned firm on Steeles Avenue East with a 4.9 Google rating from 26 reviews. Its site says it was established in 1960 and calls it the oldest heating and cooling company in Milton. It services furnaces, air conditioners and fireplaces, and offers service contracts.

  • Strengths: The site states it is WSIB, HRAI, TSSA and Safe Contractor certified, and fully insured.
  • Watch-outs: It has the fewest reviews here and posts no warranty terms, so ask for them in writing.
  • Best for: Homeowners who want a long-established local firm.

How much does a new furnace cost in Milton?

A single-stage gas furnace costs $4,500 to $6,000 installed, and a modulating model $8,400 or more, according to Reliance’s 2026 pricing guide. Reliance also says most homeowners spend $5,500 to $9,000 to replace central air. A ductless heat pump starts at $4,500 plus HST, per Enercare.

Installed HVAC prices for Milton homes (CAD, Ontario guides)
JobTypical cost (CAD)Source
Single-stage gas furnace$4,500 to $6,000Reliance, 2026
Modulating gas furnace$8,400+Reliance, 2026
Central air replacement$5,500 to $9,000Reliance
Ductless heat pumpFrom $4,500 plus HSTEnercare, 2026
Furnace tune-up$120 to $250Custom Contracting, 2026

Reliance calls the type of furnace the biggest factor in price. It lists rentals from $70 to $140 or more a month, so add up the fee over the years you plan to stay before you choose.

Owners of new Milton homes should note that the Home Renovation Savings program says new build homes do not qualify. For lifespan and heat pump trends, see our HVAC research and statistics for 2026. To price your job, compare free HVAC service quotes in Milton.

How do you choose an HVAC company in Milton?

Choose a Milton HVAC company by confirming its TSSA registration first, then its WSIB clearance and liability insurance. Ask the Town of Milton whether your job needs a permit. Ontario law requires a written contract for any home renovation over $50, and the province advises a deposit of 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. Ask about city licences and permits. Ask Milton whether the job needs a municipal licence or building permit before work starts.
  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 is direct: “Registered Fuels Contractors are the only businesses that are legally authorized to do fuels related work in Ontario.” It also says the city it shows is only the main office, so a firm based in Mississauga or Hamilton can still serve Milton.

Every contractor we match in Milton has passed our TSSA, WSIB and insurance checks first. If your upstairs runs hot in summer, you can also get insulation quotes in Milton before you size a new AC.

How did we rank these Milton HVAC companies?

We ranked Milton HVAC companies on data, not ads. Our search found 55 HVAC businesses on Google Maps. We kept 18 Milton 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 of the 18.

How we narrowed 55 Milton HVAC companies to 7 (data checked October 2, 2026)
StepBusinesses remaining
Found on Google Maps55
Primary Google category is a HVAC company42
Open, with a website of its own36
In Milton (by address or Google map pin)33
4.5+ stars from 10+ Google reviews18
Website readable when checked11
TSSA registration confirmed (18 checked in rank order until 12 confirmed)11
Listed on this page (top ranked)7

In Milton, we checked every firm that met our rating bar. We could not match 6 of the 18 to an active registration by phone, website or name. Not being matched is not proof a firm lacks registration. It only means we could not confirm one.

We also require a website we can read, and 1 of the 12 failed that check, which left 11 eligible firms.

The score blends each rating with its review count, so Airprime’s 5.0 from 34 reviews edges Baker’s 4.9 from 76. We checked it all on October 2, 2026, and recheck every 90 days. Spot an error? Please contact our editorial team.

What do Milton homeowners ask before hiring an HVAC company?

Milton homeowners ask about furnace prices, licences, tune-ups and whether a newer house qualifies for heat pump rebates. These answers draw on TSSA, Ontario's Home Renovation Savings program and 2026 price guides from Ontario heating firms, and each one stands alone.

How much does a new furnace cost in Milton?

A single-stage gas furnace costs $4,500 to $6,000 installed, according to Reliance's 2026 pricing guide. A two-stage model runs $6,000 to $8,000 and a modulating furnace $8,400 or more. Venting, gas line and electrical upgrades add to the final price.

Do HVAC companies need a licence in Milton?

For gas work, yes. Under TSSA rules, only registered fuels contractors are legally authorized to do fuels related work in Ontario. You can check any firm in its online directory. We did not verify a Town of Milton licence for HVAC firms, so ask the town about permits.

Do new Milton homes qualify for heat pump rebates?

Not brand-new ones. Ontario's Home Renovation Savings program says new build homes do not qualify. Owners of existing detached, semi-detached, row or town homes can get up to $2,000 for a cold-climate heat pump if they heat with Enbridge gas, or up to $7,500 if they heat another way.

How much is a furnace tune-up in Milton?

A furnace tune-up in Ontario costs $120 to $250 for a single visit, according to a September 2026 contractor guide. Plans that pair a furnace visit with a spring AC tune-up run $180 to $350 a year. Enercare advises a licensed check of all major parts every 1 to 2 years.

Is Pro House Maintenance free to use?

Yes. Milton homeowners pay nothing to use Pro House Maintenance. Share your heating or cooling job once, and we send several HVAC contractors who cleared our TSSA, WSIB, insurance, reference and background checks. Compare their written quotes, hire the one you like, and our satisfaction guarantee backs the work.

Where can you find HVAC companies near Milton?

The closest HVAC companies lists to Milton cover Mississauga (20 km away), Hamilton (29 km away) and Toronto (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. Home Renovation Savings program (Save on Energy and Enbridge Gas), Heat pump rebates
  3. Reliance Home Comfort, How Much Does a Furnace Cost in Canada? (2026 Pricing Guide)
  4. Reliance Home Comfort, How Much Does a Home Air Conditioner Cost in Canada?
  5. Enercare, 2026 Heat Pump Buyer's Guide for Homeowners
  6. Enercare, The 2026 Buyer's Guide to Furnaces
  7. Custom Contracting, Furnace Maintenance Cost Ontario 2026 (updated September 2026)
  8. 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 Daniel Osei, Exteriors Writer.