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10 Best HVAC Companies in Toronto, ON

The best HVAC companies in Toronto for most homeowners are Dr HVAC and Plumbing for all-in-one service, Green Heating and Air for boilers and radiant heat, and Climax Heating & Air Conditioning for condos. Laird & Son brings more than 75 years of history, and AccuServ and SunnySide stand out for combi boilers and older homes. Every company here holds at least 4.5 stars from 50 or more Google reviews.

  • Last reviewed September 2026
  • 10 companies reviewed · How We Rank

Our top 10 hvac companies in Toronto

Toronto is a tough city for heating and cooling. Winters regularly drop well below freezing, summers bring humid heatwaves, and the housing stock runs from century-old semis with cast iron radiators to glass condo towers with in-suite fan coils. That mix means the right HVAC company depends a lot on what you live in. This list covers ten companies that rank at the top of Google Maps for HVAC in Toronto and hold at least a 4.5 rating from 50 or more Google reviews. Some are big multi-branch operations with trucks on the road around the clock. Others are smaller specialists in boilers, condos, heritage homes or gas line work. Each profile explains what the company is good at, who it suits, and what to ask before you book. Whatever you choose, a few checks apply everywhere in Ontario. Any gas work must be done by a TSSA-certified technician, so ask for the registration number. Get quotes in writing with model numbers. For heat pumps, ask for a proper load calculation and check which rebates the equipment qualifies for. And if you live in a condo, clear the visit with building management first.

  1. Dr HVAC and Plumbing

    Best for all-in-one heating, cooling and plumbing4.9(590 Google reviews)397 Donlands Ave Unit 105, East York, ONBest for homeowners who want one company for the furnace, the AC and the plumbing    Rank01

    Why we picked them

    Top of Google Maps for Toronto HVAC, with 4.9 from 590 reviews and one team for furnaces, AC and plumbing.

    What we like

    • Open 24/7
    • Publishes its TSSA registration
    • Reviews describe careful diagnosis

    Things to consider

    • After-hours rates not published

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Duct cleaning
    • Maintenance plans

    Key details

    Best for
    homeowners who want one company for the furnace, the AC and the plumbing
    Service area
    Toronto
    Years in business
    18 years
    Emergency service
    Available
    Financing
    Available
    Credentials
    TSSA Registered Contractor

  2. Green Heating and Air Inc.

    Best for boilers and radiant heating5.0(190 Google reviews)1373 Bathurst St, Toronto, ONBest for older midtown homes with boilers, radiant floors or complex heating    Rank02

    Why we picked them

    A 5.0 rating from 190 reviews and rare skill with boilers, radiant floors and heat pump design.

    What we like

    • Perfect 5.0 rating
    • Deep hydronic experience
    • Free estimates

    Things to consider

    • No TSSA number on the website

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Maintenance plans

    Key details

    Best for
    older midtown homes with boilers, radiant floors or complex heating
    Service area
    Toronto
    Years in business
    18 years
    Emergency service
    Available
    Credentials
    TSSA certified technicians

  3. Climax Heating & Air Conditioning

    Best for condo fan coils4.9(540 Google reviews)588 Gordon Baker Rd #586, North York, ONBest for condo owners with fan coil or in-suite HVAC problems    Rank03

    Why we picked them

    Fills a real gap in Toronto with in-suite condo repairs, backed by 4.9 from 540 reviews.

    What we like

    • Condo HVAC specialty
    • Same-day repairs in reviews
    • Free consultations

    Things to consider

    • Financing terms need a close read

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Maintenance plans

    Key details

    Best for
    condo owners with fan coil or in-suite HVAC problems
    Service area
    Toronto
    Emergency service
    Available
    Financing
    Available
    Credentials
    Certified and insured technicians

  4. Laird & Son Heating & Air Conditioning

    Best long-established family firm4.8(1050 Google reviews)120 Dynamic Dr #22, Scarborough, ONBest for homeowners who want a long-established family firm for heating and cooling    Rank04

    Why we picked them

    Four generations and 1,050 reviews at 4.8 give it one of the deepest track records in the city.

    What we like

    • In business since 1948
    • Over 1,000 Google reviews
    • Oil-to-gas conversions

    Things to consider

    • Hours end at 8 PM

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Duct cleaning
    • Maintenance plans

    Key details

    Best for
    homeowners who want a long-established family firm for heating and cooling
    Service area
    Toronto
    Years in business
    78 years
    Emergency service
    Available
    Financing
    Available
    Credentials
    TSSA Registered Contractor

  5. Superior HVAC Service

    Best for fast west-end response4.8(59 Google reviews)25 Morrow Ave, Toronto, ONBest for fast after-hours furnace and AC calls in the west end    Rank05

    Why we picked them

    Reviews describe a technician on site within three hours of a Friday evening furnace call.

    What we like

    • 24/7 hours
    • Quick evening call-outs in reviews
    • Water treatment too

    Things to consider

    • Only 59 reviews at this branch

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Maintenance plans

    Key details

    Best for
    fast after-hours furnace and AC calls in the west end
    Service area
    Toronto
    Years in business
    14 years
    Warranty
    The website mentions a warranty of up to 90 days on service work. Ask for the exact labour and parts terms on your quote.
    Emergency service
    Available
    Credentials
    Licensed and insured technicians

  6. AccuServ Heating and Air Conditioning

    Best for combi boilers and electrification4.9(558 Google reviews)1167 Woodbine Ave, East York, ONBest for combi boilers, tankless water heaters and all-electric conversions    Rank06

    Why we picked them

    4.9 from 558 reviews, with standout work on Navien combi boilers and gas-to-electric switches.

    What we like

    • Published TSSA number
    • Combi boiler expertise
    • 30+ years in business

    Things to consider

    • Warranty terms hard to find

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Maintenance plans

    Key details

    Best for
    combi boilers, tankless water heaters and all-electric conversions
    Service area
    Toronto
    Emergency service
    Available
    Credentials
    TSSA Registered Contractor

  7. SunnySide Heating and Air Conditioning

    Best for heritage and century homes4.9(195 Google reviews)30 Chester Hill Rd, Toronto, ONBest for adding air conditioning to heritage and century homes without ducts    Rank07

    Why we picked them

    An owner-led team that specialises in cooling older Toronto houses without tearing open walls.

    What we like

    • High-velocity and ductless systems
    • Clean, careful installs
    • Panel and EV charger work

    Things to consider

    • Warranty terms not listed

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Maintenance plans

    Key details

    Best for
    adding air conditioning to heritage and century homes without ducts
    Service area
    Toronto
    Warranty
    Work backed by strong warranties and long-term support
    Emergency service
    Available

  8. Downtown Toronto HVAC

    Best for downtown condos4.9(75 Google reviews)276 Carlaw Ave #127a, Toronto, ONBest for downtown condo fan coils, VRF and mini-split repairs    Rank08

    Why we picked them

    A tight downtown service area and in-suite condo focus, rated 4.9 from 75 reviews.

    What we like

    • One-hour emergency target
    • Fan coil and VRF focus
    • Handles building logistics

    Things to consider

    • Brief reviews, no founding year listed

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Duct cleaning
    • Maintenance plans

    Key details

    Best for
    downtown condo fan coils, VRF and mini-split repairs
    Service area
    Toronto
    Emergency service
    Available
    Credentials
    Licensed and insured

  9. City Home Comfort

    Best for heat pump advice4.7(742 Google reviews)1234 Kingston Rd #107, Toronto, ONBest for heat pump and hybrid system replacements with careful equipment advice    Rank09

    Why we picked them

    742 reviews and a sales team customers praise for honest, detailed equipment guidance.

    What we like

    • Family owned since 1981
    • Wide brand choice
    • Financing and free estimates

    Things to consider

    • Office can be slow to reach

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Heat pump installation
    • Maintenance plans

    Key details

    Best for
    heat pump and hybrid system replacements with careful equipment advice
    Service area
    Toronto
    Years in business
    45 years
    Warranty
    The company offers parts and labour warranty options on qualifying systems. Ask which plan applies to your quote.
    Emergency service
    Available
    Financing
    Available
    Credentials
    TSSA registered, with TSSA-certified technicians

  10. JLN HVAC Solutions Inc.

    Best for urgent gas line work4.9(282 Google reviews)105 Gordon Baker Rd #525, North York, ONBest for urgent gas line jobs and quick furnace or AC repairs    Rank10

    Why we picked them

    4.9 from 282 reviews and a reputation for sorting out gas problems within the hour.

    What we like

    • Fast gas leak response
    • TSSA certified technicians
    • 24/7 service

    Things to consider

    • No TSSA number or warranty listed

    Services

    • AC repair
    • AC installation
    • Furnace repair

    Key details

    Best for
    urgent gas line jobs and quick furnace or AC repairs
    Service area
    Toronto
    Emergency service
    Available
    Financing
    Available
    Credentials
    TSSA certified technicians

Compare the top hvac companies in Toronto

Ranking position reflects our editorial review, not customer ratings.

Editorial comparison of the 10 ranked companies. Customer ratings, where shown, come from the source named on each company profile.
RankCompanyBest forKey servicesService areaGoogle ratingEmergencyProfile
01Dr HVAC and Plumbinghomeowners who want one company for the furnace, the AC and the plumbingAC repair, AC installation, Furnace repairToronto4.9 (590)YesView →
02Green Heating and Air Inc.older midtown homes with boilers, radiant floors or complex heatingAC repair, AC installation, Furnace repairToronto5.0 (190)YesView →
03Climax Heating & Air Conditioningcondo owners with fan coil or in-suite HVAC problemsAC repair, AC installation, Furnace repairToronto4.9 (540)YesView →
04Laird & Son Heating & Air Conditioninghomeowners who want a long-established family firm for heating and coolingAC repair, AC installation, Furnace repairToronto4.8 (1050)YesView →
05Superior HVAC Servicefast after-hours furnace and AC calls in the west endAC repair, AC installation, Furnace repairToronto4.8 (59)YesView →
06AccuServ Heating and Air Conditioningcombi boilers, tankless water heaters and all-electric conversionsAC repair, AC installation, Furnace repairToronto4.9 (558)YesView →
07SunnySide Heating and Air Conditioningadding air conditioning to heritage and century homes without ductsAC repair, AC installation, Furnace repairToronto4.9 (195)YesView →
08Downtown Toronto HVACdowntown condo fan coils, VRF and mini-split repairsAC repair, AC installation, Furnace repairToronto4.9 (75)YesView →
09City Home Comfortheat pump and hybrid system replacements with careful equipment adviceAC repair, AC installation, Furnace repairToronto4.7 (742)YesView →
10JLN HVAC Solutions Inc.urgent gas line jobs and quick furnace or AC repairsAC repair, AC installation, Furnace repairToronto4.9 (282)YesView →

HVAC companies serving Toronto and nearby areas

Most companies in this ranking work across Ontario and the surrounding suburbs. Coverage and travel fees vary, so confirm your address is inside the service area before scheduling.

  • Toronto
  • Mississauga
  • Concord
  • Scarborough
  • Oakville
  • Brampton
  • East York
  • Vaughan
  • Milton
  • North York
  • Etobicoke
  • Markham

Nearby rankings

Toronto, Ontario

Service coverage across Toronto. Individual company areas are listed on each profile.

How we chose the best hvac companies in Toronto

Read our full ranking methodology →

These companies are listed in the order Google Maps returned them for an HVAC search in Toronto on September 16, 2026. We kept only operating businesses rated 4.5 or higher with at least 50 Google reviews and a working website, and we included one listing per brand. We then read each company's website and Google Business Profile to write its profile. Ratings and review counts are as read on that date and will change. No company paid to be included.

How to choose a hvac company in Toronto

  • Verify insurance and credentials

    Ask for a current certificate of insurance and confirm registration or licensing with the authority that issues it, not with the company.

  • Ask for a written estimate

    Scope, materials, removal, disposal and who pulls the permit should all be named on the page rather than agreed on the doorstep.

  • Compare multiple quotes

    Two or three bids on the same scope. A number far below the others usually means something has been left out of it.

  • Understand the warranty

    Separate the manufacturer's warranty on materials from the company's own warranty on the work, and get both in writing.

  • Ask who performs the work

    Find out whether the crew are employees or subcontractors, and who supervises them on the day.

  • Check recent local projects

    Ask for addresses or photographs of comparable jobs finished nearby in the last year or two.

  • Avoid high-pressure sales

    A discount that expires today, or a knock on the door after a storm, is a reason to slow down rather than sign.

  • Get everything in writing

    Change orders, timeline and payment schedule included, before the first payment changes hands.

Questions to ask before hiring

  • Are you insured, and can you send the certificate?
  • How long have you worked in this area?
  • Will you provide a written estimate with materials listed?
  • What warranty do you offer on the work itself?
  • Do you use subcontractors for this job?
  • Who handles permits and inspection?
  • What would you recommend here, and why?
  • How are unexpected costs handled once work starts?
  • What is the estimated timeline from start to finish?
  • Can you provide recent local references?

Red flags

  • No verifiable local business address or registration
  • Pressure to sign on the first visit
  • A demand for full payment up front
  • An offer to cover or waive your insurance deductible
  • Refusal to put warranty terms in writing
  • A quote that will not itemize scope

Related home services in Toronto

HVAC guides for Toronto homeowners

HVAC companies in Toronto FAQs

  • How much does a new furnace or AC cost in Toronto?

    For a standard furnace or central air replacement in a Toronto house, most homeowners pay somewhere in the low-to-mid thousands, while cold-climate heat pumps and boiler systems usually cost more. Prices depend heavily on the equipment, the house and any gas or electrical work, so get two or three written quotes with model numbers and check which rebates apply.

  • What licence should an HVAC company in Toronto have?

    In Ontario, anyone working on gas appliances or gas lines must be certified by the Technical Standards and Safety Authority. Ask the company for its TSSA registration number and the technician's certificate before any gas work begins. Dr HVAC, AccuServ and Laird & Son publish their numbers on this list.

  • Who repairs condo fan coil units in Toronto?

    Look for a company that already works in condo buildings. Climax Heating & Air Conditioning and Downtown Toronto HVAC both focus on in-suite fan coils, VRF units and mini-splits. Check your building's rules on insurance certificates, elevator bookings and contractor hours before the visit.

About this ranking

Originally published
September 2026
Last reviewed
September 2026
Companies evaluated
10

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