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10 Best HVAC Companies in Hamilton, ON

Spurr Heating & Air Conditioning, Boonstra Heating and Air Conditioning, and HAMCO Heating and Cooling lead our list of the 10 best HVAC companies in Hamilton, Ontario, chosen by matching Google's own local search order against real TSSA licensing, reviews, and website details rather than by who paid to be listed. This list includes several companies with real, published TSSA and ESA licence numbers, a rarity worth noting, alongside two Hamilton institutions with 60-plus and 80-plus years of local history. Every company holds at least a 4.6-star Google average on 54 or more reviews, current as of September 22, 2026.

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

Our top 10 hvac companies in Hamilton

Hamilton sits at the western end of Lake Ontario, and its humid continental climate brings hot, humid summers and cold winters with regular lake-effect snow squalls, conditions that put real strain on both furnaces and air conditioners. The city's housing stock spans everything from century-old homes in the lower city to newer subdivisions on the Mountain, so furnace replacements, ductwork retrofits, and central air conditioning add-ons are all common calls for local HVAC companies. Before hiring anyone on this list, confirm the technician's TSSA (Technical Safety Standards Authority) licence number for gas and refrigeration work, and, if electrical work is involved, an ESA (Electrical Safety Authority) licence number. Ontario treats both as separate, designated trades, and several companies on this list, including Spurr, Boonstra, Superior HVAC Service, Dynamic Heating & Cooling, and DHEM, publish their TSSA licence numbers directly, a level of transparency worth looking for even at companies that don't.

  1. Spurr Heating & Air Conditioning

    Best for TSSA and gasfitter licensed installations4.9(1259 Google reviews)95 Hempstead Dr #1Best for Furnace and air conditioner installation with York equipment    Rank01

    Why we picked them

    Spurr's TSSA Certificate of Authorization plus a dedicated gasfitter license, paired with York's authorized-dealer status and a review base past 1,200, makes it the strongest all-around pick in Hamilton.

    What we like

    • TSSA Certificate of Authorization plus Refrigeration 313A and gasfitter licenses
    • Authorized York Dealer
    • 4.9-star average across 1,259 reviews

    Things to consider

    • No stated 24/7 emergency availability

    Services

    • AC repair
    • AC installation
    • Furnace repair

    Key details

    Best for
    Furnace and air conditioner installation with York equipment
    Service area
    Hamilton
    Credentials
    TSSA Certificate of Authorization

  2. Boonstra Heating and Air Conditioning

    Best for 24/7 service with no after-hours fee4.7(5103 Google reviews)120 Nebo Rd #2Best for 24/7 emergency HVAC and plumbing with award-winning service    Rank02

    Why we picked them

    Six decades in Hamilton, a published TSSA licence number, and a review base past 5,000 at 4.7 stars make Boonstra the largest and longest-running name on this list.

    What we like

    • Serving Hamilton since 1961
    • TSSA license FS-R-52551 published directly
    • 24/7 emergency service with no surcharge

    Things to consider

    • BBB rating is B+ rather than A-range

    Services

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

    Key details

    Best for
    24/7 emergency HVAC and plumbing with award-winning service
    Service area
    Hamilton
    Years in business
    65 years
    Emergency service
    Available
    Financing
    Available
    Credentials
    TSSA License FS-R-52551

  3. HAMCO Heating and Cooling Ltd.

    Best for a family-owned company with 80 years of history4.8(775 Google reviews)200 Queen St NBest for Furnace installation and custom ductwork from an 80-year-old family shop    Rank03

    Why we picked them

    Eighty years under the same family, plus a review base full of specific technicians getting individual praise, gives HAMCO a depth of local trust that's hard to fake.

    What we like

    • Family-owned since 1946, 80 years in Hamilton
    • Named technicians praised repeatedly in reviews
    • Free sales estimates and rental equipment options

    Things to consider

    • No specific TSSA licence number published on the company's own site

    Services

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

    Key details

    Best for
    Furnace installation and custom ductwork from an 80-year-old family shop
    Service area
    Hamilton
    Years in business
    80 years
    Financing
    Available

  4. Superior HVAC Service, Heating & Air Conditioning

    Best for a stated parts-and-repair warranty5.0(87 Google reviews)120 Hughson St SBest for 24/7 emergency furnace and AC repair with a warranty on parts    Rank04

    Why we picked them

    A publicly stated TSSA licence number and a specific parts-and-repair warranty are real substance, even with a review-count discrepancy worth knowing about.

    What we like

    • Publishes TSSA license 000394817 directly
    • Installs six major brands
    • Stated 3-month protection plan plus parts warranty

    Things to consider

    • The company's own site claims a much higher Google review count than its current profile shows

    Services

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

    Key details

    Best for
    24/7 emergency furnace and AC repair with a warranty on parts
    Service area
    Hamilton
    Credentials
    TSSA License

  5. Lancaster Heating & Cooling

    Best for authorized Trane and Carrier installation4.8(234 Google reviews)195 Hempstead DrBest for Trane and Carrier installation with a BBB A+ rating    Rank05

    Why we picked them

    Seventy years in Hamilton, a BBB A+ rating, and dual authorized-dealer status with Trane and Carrier is a rare combination of longevity and manufacturer backing.

    What we like

    • Serving Hamilton since 1955, 70 years
    • BBB A+ rating
    • Authorized dealer for Trane, Carrier, and AprilAire

    Things to consider

    • Standard office hours limited to weekdays, 8 a.m. to 4:30 p.m.

    Services

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

    Key details

    Best for
    Trane and Carrier installation with a BBB A+ rating
    Service area
    Hamilton
    Years in business
    71 years
    Emergency service
    Available
    Financing
    Available
    Credentials
    BBB A+ Rating

  6. Shipton's Heating & Cooling Ltd

    Best for water filtration and softening alongside HVAC4.8(2572 Google reviews)15 Teal Ave, Stoney CreekBest for Water filtration and softening alongside standard HVAC service    Rank06

    Why we picked them

    A review base past 2,500 and a genuinely deep water filtration lineup make Shipton's the strongest pick for anyone dealing with hard water alongside a furnace or AC need.

    What we like

    • Family-owned in Stoney Creek for more than 20 years
    • 4.8-star average across 2,572 reviews
    • Deep water treatment lineup including Chlor-A-Soft and Excalibur systems

    Things to consider

    • No specific TSSA licence number published on the site

    Services

    • AC repair
    • AC installation
    • Furnace repair
    • Duct cleaning

    Key details

    Best for
    Water filtration and softening alongside standard HVAC service
    Service area
    Hamilton

  7. Dynamic Heating & Cooling

    Best for dual TSSA and ESA licensing with a 10-year warranty5.0(822 Google reviews)1527 Upper Ottawa St Unit 13Best for 24/7 emergency HVAC with a 10-year installation warranty    Rank07

    Why we picked them

    Publishing both a TSSA and an ESA licence number, plus a specific 10-year installation warranty, is rare, checkable detail backed by a perfect 5.0 stars across 822 reviews.

    What we like

    • Publishes both a TSSA license and an ESA license
    • WSIB certified and Google Guaranteed
    • 10-year parts and labor warranty on installations

    Things to consider

    • No individual owner named beyond a single team reference

    Services

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

    Key details

    Best for
    24/7 emergency HVAC with a 10-year installation warranty
    Service area
    Hamilton
    Warranty
    10-year parts and labour warranty on installations; 1-year labour warranty on repairs
    Emergency service
    Available
    Financing
    Available
    Credentials
    TSSA License

  8. DHEM Heating & Cooling

    Best for genuine day-or-night emergency response5.0(54 Google reviews)565 Rymal Rd E Unit 49Best for Day-or-night emergency HVAC response    Rank08

    Why we picked them

    A TSSA licence number printed right on the truck and genuine in-house sheet metal work are small, checkable details that add up, even with a newer review base.

    What we like

    • TSSA licence number displayed directly on the service vehicle
    • WSIB insured and Skilled Trades Ontario certified
    • Perfect 5.0-star average across 54 reviews

    Things to consider

    • Smallest review base in this ranking

    Services

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

    Key details

    Best for
    Day-or-night emergency HVAC response
    Service area
    Hamilton
    Emergency service
    Available
    Credentials
    TSSA License

  9. Adam's Air Systems - Heating and Air Conditioning

    Best for a real storefront with HRAI and BBB credentials4.8(215 Google reviews)229 Parkdale Ave NBest for Storefront HVAC shop with HRAI membership and BBB accreditation    Rank09

    Why we picked them

    HRAI membership and BBB accreditation together, backed by a real photographed storefront rather than just a service van, give Adam's Air a level of physical presence worth noting.

    What we like

    • HRAI member and BBB accredited business
    • Operating from a real Parkdale Avenue storefront since 2006
    • FinanceIt financing available

    Things to consider

    • No stated 24/7 emergency availability

    Services

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

    Key details

    Best for
    Storefront HVAC shop with HRAI membership and BBB accreditation
    Service area
    Hamilton
    Years in business
    20 years
    Warranty
    Warranties offered on new equipment installations
    Financing
    Available
    Credentials
    HRAI Member

  10. Archie Horn & Son Ltd

    Best for combined HVAC and plumbing under one 90-year-old name4.6(338 Google reviews)31 Bigwin Rd #1Best for Combined HVAC and plumbing from a 90-year-old local company    Rank10

    Why we picked them

    Ninety years in one city is a genuinely rare tenure, and running both heating and plumbing divisions under that name for so long says something about staying power.

    What we like

    • 90 years serving Hamilton
    • Combined heating and plumbing service under one company
    • FinanceIt financing and free consultations available

    Things to consider

    • No specific licence numbers published for TSSA, HRAI, or ESA credentials

    Services

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

    Key details

    Best for
    Combined HVAC and plumbing from a 90-year-old local company
    Service area
    Hamilton
    Warranty
    100% satisfaction guarantee on all services
    Emergency service
    Available
    Financing
    Available

Compare the top hvac companies in Hamilton

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
01Spurr Heating & Air ConditioningFurnace and air conditioner installation with York equipmentAC repair, AC installation, Furnace repairHamilton4.9 (1259)Not listedView →
02Boonstra Heating and Air Conditioning24/7 emergency HVAC and plumbing with award-winning serviceAC repair, AC installation, Furnace repairHamilton4.7 (5103)YesView →
03HAMCO Heating and Cooling Ltd.Furnace installation and custom ductwork from an 80-year-old family shopAC installation, Furnace repair, Heat pump installationHamilton4.8 (775)Not listedView →
04Superior HVAC Service, Heating & Air Conditioning24/7 emergency furnace and AC repair with a warranty on partsAC repair, AC installation, Furnace repairHamilton5.0 (87)Not listedView →
05Lancaster Heating & CoolingTrane and Carrier installation with a BBB A+ ratingAC repair, AC installation, Furnace repairHamilton4.8 (234)YesView →
06Shipton's Heating & Cooling LtdWater filtration and softening alongside standard HVAC serviceAC repair, AC installation, Furnace repairHamilton4.8 (2572)Not listedView →
07Dynamic Heating & Cooling24/7 emergency HVAC with a 10-year installation warrantyAC repair, AC installation, Furnace repairHamilton5.0 (822)YesView →
08DHEM Heating & CoolingDay-or-night emergency HVAC responseAC installation, Heat pump installation, Duct cleaningHamilton5.0 (54)YesView →
09Adam's Air Systems - Heating and Air ConditioningStorefront HVAC shop with HRAI membership and BBB accreditationAC repair, AC installation, Furnace repairHamilton4.8 (215)Not listedView →
10Archie Horn & Son LtdCombined HVAC and plumbing from a 90-year-old local companyAC installation, Furnace repair, Heat pump installationHamilton4.6 (338)YesView →

HVAC companies serving Hamilton 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.

  • Hamilton
  • Oakville
  • Burlington
  • Ancaster
  • Dundas
  • Milton

Nearby rankings

Hamilton, Ontario

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

How we chose the best hvac companies in Hamilton

Read our full ranking methodology →

This list was built from Google's own local search results for HVAC contractors in Hamilton, ON, merged across two separate search phrasings and de-duplicated by Google place ID, then checked one by one against a real, reachable website, a Hamilton-area address (including communities amalgamated into the city such as Stoney Creek), a Google rating of at least 4.5 stars, and at least 50 Google reviews. All 10 companies met these thresholds directly from the first round of research, so no neighborhood-variation searches or substitutions were needed. Ratings and review counts were read directly from each company's Google Business Profile on September 22, 2026; one company, Superior HVAC Service, advertises a considerably higher review count on its own site than what its Google Business Profile currently shows, and this list uses the number read directly from Google. No company paid for placement or for a better position on this list.

How to choose a hvac company in Hamilton

  • 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 Hamilton

HVAC guides for Hamilton homeowners

HVAC companies in Hamilton FAQs

  • How do I check if a Hamilton HVAC company is properly licensed?

    Ask for the technician's TSSA (Technical Safety Standards Authority) licence number for gas and refrigeration work, and an ESA (Electrical Safety Authority) licence number if electrical work is involved. Several companies on this list, including Spurr, Boonstra, Superior HVAC Service, Dynamic Heating & Cooling, and DHEM, publish their TSSA numbers directly, so ask any company that doesn't for the same information before signing a contract.

  • How much does a furnace or AC installation cost in Hamilton?

    Costs vary by equipment and home size, and several companies on this list, including Boonstra, Lancaster, Adam's Air Systems, and Archie Horn, offer FinanceIt or similar financing to spread out the cost of a larger installation. Ask for a written, itemized quote after an in-home assessment before committing.

  • Does lake-effect weather affect HVAC equipment in Hamilton?

    Yes, Hamilton's location at the western end of Lake Ontario brings regular lake-effect snow squalls and humid summers, so outdoor units benefit from regular clearing in winter and a properly sized system for summer humidity; ask your installer about seasonal maintenance plans.

About this ranking

Originally published
September 2026
Last reviewed
September 2026
Companies evaluated
10

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