Skip to content
ContractorsRanked

Emergency HVAC Contractors in Saint John, NB (2026)

24 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank

8 of the 24 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Saint John: Matrix Mechanical, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Saint John at a glance

Top emergency HVAC contractors in Saint John at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Matrix Mechanical674.9★ (512)Saint John24/7
2MACSiAIR Mini Split Heat Pump + Air Exchanger + Air Duct + Dryer Vent Cleaning Services645.0★ (71)Saint John24/7
3Dominion Plumbing and Heating594.4★ (82)Saint John24/7
4Crawford's Plumbing and heating LTD594.8★ (47)Saint John24/7
5Sure Flow Plumbing & Heating Ltd.594.5★ (68)Saint John24/7
6Port City Plumbing & Heating Ltd585.0★ (28)Saint John24/7
7Mackenzie & Wilkins Plumbing555.0★ (24)Saint John24/7
8Lawton James E Plumbing & Heating Ltd553.8★ (8)Saint John24/7
9Greenfoot Energy Solutions504.9★ (1,041)Saint John—
10Allstar Heating & Cooling465.0★ (100)Saint John—

Call an emergency HVAC contractor in Saint John now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 24 emergency HVAC contractors in Saint John, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights.

  1. Ranked #1 in Saint John

    #1 Matrix Mechanical

    Based in Saint John

    67/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.9★ from 512 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 512 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    204 Carmarthen St, Saint John, NB E2L 2P7
    View profile for Matrix Mechanical(506) 696-7000

  2. #2 MACSiAIR Mini Split Heat Pump + Air Exchanger + Air Duct + Dryer Vent Cleaning Services

    Based in Saint John

    64/100CR Score

    Ranked #2 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 71 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    461 Millidge Ave, Saint John, NB E2K 2N3
    View profile for MACSiAIR Mini Split Heat Pump + Air Exchanger + Air Duct + Dryer Vent Cleaning Services(506) 566-7008

  10. #10 Allstar Heating & Cooling

    Based in Saint John

    46/100CR Score

    Ranked #10 because of its Google rating and trade focus: 5.0★ from 100 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 100 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    145 Hampton Rd Suite 1, Rothesay, NB E2E 2N6
    View profile for Allstar Heating & Cooling(506) 847-3202

  12. #12 HVAC CleanPro

    Based in Saint John

    44/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.9★ from 49 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 49 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1724 Rothesay Rd, Saint John, NB E2H 2J4
    View profile for HVAC CleanPro(506) 717-7971

  13. #13 Aerus

    Based in Saint John

    44/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.7★ from 57 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.7★ from 57 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    800 Fairville Blvd, Saint John, NB E2M 5T4
    View profile for Aerus(506) 635-8893

  14. #14 AJW Mechanical

    Based in Saint John

    43/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.3★ from 37 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.3★ from 37 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    89 Red Head Rd, Saint John, NB E2P 1K8
    View profile for AJW Mechanical(877) 648-0111

  16. #16 Bonnevie Refrigeration

    Based in Saint John

    41/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.1★ from 19 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.1★ from 19 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    30 Rockefeller Dr, Quispamsis, NB E2G 1Y8
    View profile for Bonnevie Refrigeration(506) 647-5525

  17. #17 LeRoy's Heating Services

    Based in Saint John

    41/100CR Score

    Ranked #17 because of its Google rating and trade focus: 3.6★ from 17 Google reviews, listed on Google as “HVAC contractor”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 3.6★ from 17 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    257 Metcalf St, Saint John, NB E2K 1K7
    View profile for LeRoy's Heating Services(506) 634-7105

  19. #19 Allan's Plumbing & Heating

    Based in Saint John

    39/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.4★ from 41 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.4★ from 41 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    125 Rothesay Ave, Saint John, NB E2L 3Z8
    View profile for Allan's Plumbing & Heating(506) 693-1070

  20. #20 Bob's Plumbing & Heating Ltd

    Based in Saint John

    38/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.5★ from 22 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.5★ from 22 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    26 Maple Grove Ct, Quispamsis, NB E2E 3S1
    View profile for Bob's Plumbing & Heating Ltd(506) 847-2627

  22. #22 Breau's Plumbing And Heating

    Based in Saint John

    38/100CR Score

    Ranked #22 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 10 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
    Address
    68 Karen St, Saint John, NB E2N 1E6
    View profile for Breau's Plumbing And Heating(506) 977-3799

  23. #23 Lloyd Wilson Ltd.

    Based in Saint John

    35/100CR Score

    Ranked #23 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Plumber”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 12 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
    Address
    209 Tower St, Saint John, NB E2M 1Z4
    View profile for Lloyd Wilson Ltd.(506) 696-3365

How we ranked emergency HVAC contractors in Saint John

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Saint John: questions

Which HVAC contractors in Saint John are open 24/7?

8 on this list post 24/7 hours, including Matrix Mechanical, MACSiAIR Mini Split Heat Pump + Air Exchanger + Air Duct + Dryer Vent Cleaning Services, Dominion Plumbing and Heating, Crawford's Plumbing and heating LTD and Sure Flow Plumbing & Heating Ltd..

Who is ranked #1 for emergency heating and cooling in Saint John, NB?

Matrix Mechanical is #1, with a CR Score of 67 out of 100 on emergency weights.

How are emergency HVAC contractors in Saint John ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

24 of the 24 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Saint John

  1. October 2026: CR Scores recalculated for 24 hvac contractors serving Saint John.

More emergency and heating and cooling pages

Emergency HVAC contractors nearby