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Best HVAC Companies in St. John's, NL

The best HVAC companies serving St. John's, NL right now are Heat Pump Solutions Ltd., Cole Air Contracting, Avalon Plumbing & Heating, HydroKleen, Cooper's Heating Solutions, Greenfoot Energy and Down Home HVAC, each rated 4.7 or higher across a real base of Google reviews read on September 26, 2026. This list leans toward heat pump specialists and hydronic heating contractors, which fits how most homes on the Avalon are actually heated, and it drops any result that could not be verified as a genuine, locally operating business.

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

Our top 7 hvac companies in St. John's

St. John's runs on a mix of oil, electric baseboard and hot water hydronic heat, much of it in older two-storey wood frame houses and post-war bungalows that were never built with ductwork. Ductless mini-split heat pumps have become the default upgrade, and provincial and federal rebate programs have made the switch off oil considerably cheaper, though the paperwork trips a lot of homeowners up. Salt air and driven snow off the Atlantic are the local wildcard: outdoor units need corrosion-resistant coils, sensible mounting height and regular cleaning, more than they would inland. Before hiring, confirm the contractor's Newfoundland and Labrador trade qualification and ask directly how the outdoor unit will be protected from weather on your specific property.

  1. Heat Pump Solutions Ltd.

    Best for combined heat pump and electrical work4.9(1339 Google reviews)285 Thorburn Rd, St. John's, NL A1B 4R1, CanadaBest for heat pump installation and retrofit work in St. John's and across the northeast Avalon    Rank01

    Why we picked them

    A 4.9 rating from 1,339 reviews and genuine in-house electrical and duct fabrication capability make this the top pick for a full heat pump retrofit.

    What we like

    • 4.9 stars from 1,339 Google reviews, the largest sample on this list
    • In-house electrical work including dedicated circuits and panel upgrades
    • Custom ductwork fabrication for older St. John's houses

    Things to consider

    • Published hours are weekdays only despite a 24/7 emergency claim on the site

    Services

    • Heat pump installation

    Key details

    Best for
    heat pump installation and retrofit work in St. John's and across the northeast Avalon
    Service area
    St. John's
    Credentials
    HVAC licence

  2. Cole Air Contracting - Heat Pumps & Mini-Splits

    Best for rebate paperwork support4.7(378 Google reviews)7 Riverview Ave Unit C, Mount Pearl, NL A1N 1L9, CanadaBest for mini-split and ducted heat pump installs with rebate paperwork support    Rank02

    Why we picked them

    A 4.7 rating from 378 reviews and a reputation for walking customers through rebate paperwork make this a strong pick for anyone converting off oil or electric baseboard.

    What we like

    • 4.7 stars from 378 Google reviews
    • Reviewers consistently mention help with federal and provincial rebate applications
    • Covers new construction, renovation, HRV and commercial HVAC

    Things to consider

    • Closed weekends, with no advertised weekend emergency line

    Key details

    Best for
    mini-split and ducted heat pump installs with rebate paperwork support
    Service area
    St. John's

  3. Avalon Plumbing & Heating Ltd

    Best for hot water boilers and oil-to-electric conversions4.9(250 Google reviews)62 Paddy Dobbin Dr, St. John's, NL A1A 4W1, CanadaBest for hot water boiler work and oil-to-electric conversions in older St. John's homes    Rank03

    Why we picked them

    A 4.9 rating from 250 reviews and a genuine specialty in hot water boilers fits St. John's hydronic-heavy housing stock better than a generalist HVAC shop.

    What we like

    • 4.9 stars from 250 Google reviews
    • Owner-operator since 1994 with hands-on involvement in every job
    • Stocks Giant and Slant/Fin boilers to avoid long delivery waits

    Things to consider

    • Leans hydronic and plumbing rather than ducted air conditioning or heat pumps

    Key details

    Best for
    hot water boiler work and oil-to-electric conversions in older St. John's homes
    Service area
    St. John's
    Years in business
    46 years

  4. HydroKleen St. John's, NL Ductless Mini Split Heat Pump Cleaning

    Best for deep cleaning ductless heat pump heads5.0(52 Google reviews)30 Rosalind StreetBest for deep cleaning ductless heat pump heads and air exchangers in coastal homes    Rank04

    Why we picked them

    A perfect 5.0 rating from 52 reviews and a singular focus on the cleaning that most full-service contractors rush make this the pick for coastal homes with heavy indoor coil buildup.

    What we like

    • 5.0 rating from 52 Google reviews
    • Focused entirely on cleaning rather than treating it as an add-on service
    • Covers ceiling cassettes, air exchangers, dryer vents and bathroom fans as well as wall-mounted heads

    Things to consider

    • A cleaning specialist only, so a broken or faulty unit still needs a licensed HVAC contractor

    Services

    • Duct cleaning

    Key details

    Best for
    deep cleaning ductless heat pump heads and air exchangers in coastal homes
    Service area
    St. John's

  5. Cooper's Heating Solutions

    Best for oil-to-electric conversions with full install crews4.9(125 Google reviews)310 Bauline Line Extension, Portugal Cove-St. Philip's, NL A1M 2V6, CanadaBest for oil-to-electric heating conversions and rebate paperwork in the St. John's area    Rank05

    Why we picked them

    A 4.9 rating from 125 reviews and reviewer mentions of full crews and rebate help stood out for anyone planning a full heating system change.

    What we like

    • 4.9 stars from 125 Google reviews
    • Sends full installation crews rather than a single technician
    • Reviewers repeatedly credit office staff with handling rebate paperwork

    Things to consider

    • Published hours are weekdays 8:30 to 4, despite a 24/7 emergency claim on the site

    Services

    • Duct cleaning

    Key details

    Best for
    oil-to-electric heating conversions and rebate paperwork in the St. John's area
    Service area
    St. John's

  6. Greenfoot Energy

    Best for combined insulation, solar and heat pump upgrades4.9(1004 Google reviews)1218 Kenmount Rd, Paradise, NL A1L 1N3, CanadaBest for planned heat pump, insulation and solar upgrades across the Northeast Avalon    Rank06

    Why we picked them

    A 4.9 rating from 1,004 reviews, the largest volume after the top pick, plus a genuine envelope-and-mechanical package, suits anyone doing a full energy upgrade rather than a single-system swap.

    What we like

    • 4.9 stars from 1,004 Google reviews
    • Covers building envelope work alongside heat pumps, so insulation and mechanical upgrades can be scoped together
    • States all installs are performed by Red Seal certified technicians

    Things to consider

    • Part of a multi-province company, which can feel less personal than a single local crew

    Services

    • Heat pump installation
    • Maintenance plans

    Key details

    Best for
    planned heat pump, insulation and solar upgrades across the Northeast Avalon
    Service area
    St. John's
    Years in business
    12 years

  7. Down Home HVAC Ltd.

    Best for a heat pump install that also needs electrical work4.9(123 Google reviews)Best for ductless heat pump installs that also need electrical work done properly    Rank07

    Why we picked them

    A 4.9 rating from 123 reviews and a dual HVAC/electrical licence remove the most common delay in a ductless retrofit, the wait for a separate electrician.

    What we like

    • 4.9 stars from 123 Google reviews
    • Licensed for both HVAC and electrical work, covering the dedicated circuit and disconnect in-house
    • Elite Fujitsu Dealer status with extended warranty coverage

    Things to consider

    • No published 24-hour emergency service, and no pricing or service-area boundary listed

    Key details

    Best for
    ductless heat pump installs that also need electrical work done properly
    Service area
    St. John's

Compare the top hvac companies in St. John's

Ranking position reflects our editorial review, not customer ratings.

Editorial comparison of the 7 ranked companies. Customer ratings, where shown, come from the source named on each company profile.
RankCompanyBest forKey servicesService areaGoogle ratingEmergencyProfile
01Heat Pump Solutions Ltd.heat pump installation and retrofit work in St. John's and across the northeast AvalonHeat pump installationSt. John's4.9 (1339)Not listedView →
02Cole Air Contracting - Heat Pumps & Mini-Splitsmini-split and ducted heat pump installs with rebate paperwork supportSt. John's4.7 (378)Not listedView →
03Avalon Plumbing & Heating Ltdhot water boiler work and oil-to-electric conversions in older St. John's homesSt. John's4.9 (250)Not listedView →
04HydroKleen St. John's, NL Ductless Mini Split Heat Pump Cleaningdeep cleaning ductless heat pump heads and air exchangers in coastal homesDuct cleaningSt. John's5.0 (52)Not listedView →
05Cooper's Heating Solutionsoil-to-electric heating conversions and rebate paperwork in the St. John's areaDuct cleaningSt. John's4.9 (125)Not listedView →
06Greenfoot Energyplanned heat pump, insulation and solar upgrades across the Northeast AvalonHeat pump installation, Maintenance plansSt. John's4.9 (1004)Not listedView →
07Down Home HVAC Ltd.ductless heat pump installs that also need electrical work done properlySt. John's4.9 (123)Not listedView →

HVAC companies serving St. John's and nearby areas

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

  • St. John's
  • St. John's
  • Mount Pearl
  • Paradise
  • Portugal Cove-St. Philip's
St. John's, Newfoundland and Labrador

Service coverage across St. John's. Individual company areas are listed on each profile.

How we chose the best hvac companies in St. John's

Read our full ranking methodology →

Companies were found through Google Maps searches for HVAC contractors serving St. John's, NL, then checked one by one against their own websites and Google Business Profiles. One widely reviewed result, trading as a plumbing and heating company, was dropped after its published address turned out to be Newfoundland, New Jersey, in the United States, not Newfoundland and Labrador, despite the name match. The remaining seven are listed in Google's own search order, not paid placement, and all ratings and review counts were read on September 26, 2026. No company paid for inclusion or position.

How to choose a hvac company in St. John's

  • 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

HVAC guides for St. John's homeowners

HVAC companies in St. John's FAQs

  • How do I check that an HVAC contractor in St. John's is properly licensed?

    Newfoundland and Labrador requires certification for refrigerant handling and for electrical and gas work through the provincial Certification Board and, for electrical, the Department of Digital Government and Service NL. Ask any contractor for their certification number and current insurance before work starts, and be specific with an electrical contractor if the job includes a dedicated circuit or panel upgrade, since that is a separate trade from HVAC itself.

  • How much does a heat pump or furnace conversion cost in St. John's?

    None of the companies on this list publish fixed prices, since the right figure depends on square footage, the number of indoor heads, and whether electrical or ductwork changes are needed. Provincial and federal rebates for switching off oil or electric baseboard heat can meaningfully lower the net cost, so ask each contractor which programs your household qualifies for and whether they file the paperwork for you or leave that to you.

  • Do heat pumps really work through a Newfoundland winter?

    Yes, for most St. John's homes. Winters on the Avalon Peninsula generally run from about minus five to minus fifteen degrees, which sits inside the operating range of a modern cold-climate mini-split, so the heat pump handles most of the season rather than handing off to backup heat constantly. The bigger local challenge is wind, salt air and drifting snow around the outdoor unit, which is why mounting height and coil protection matter more here than raw capacity numbers.

About this ranking

Originally published
September 2026
Last reviewed
September 2026
Companies evaluated
7

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