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Best HVAC Contractors in Sydney, NS (2026)

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

The short answer

  1. 1

    Best overall in Sydney: Mercer Fuels Ltd, CR Score 62/100; 5.0★ from 228 Google reviews.

  2. 3

    Best for emergencies (open 24/7): Mackenzie Electrical Services Ltd, posts 24/7 hours; ranked #3 of 27.

  3. 10

    Most-reviewed: Clean Air Atlantic, 447 Google reviews at 4.9★, the most of 27 ranked; ranked #10.

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

27 Sydney HVAC contractors are ranked here by CR Score, from ten published factors. 2 are open 24/7, 4 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 27 rated businesses.

Top 10 HVAC contractors in Sydney at a glance

Top 10 HVAC contractors in Sydney at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Mercer Fuels Ltd625.0★ (228)Sydney—Overall
2Happy Home Assistant605.0★ (87)SydneyEvenings—
3Mackenzie Electrical Services Ltd604.2★ (67)Sydney24/7Emergencies
4Dave the Plumber Plumbing and Heating Ltd.604.7★ (132)Sydney——
5Greenfoot Energy Solutions595.0★ (66)Sydney——
6BEMAC HVAC LTD.594.7★ (12)SydneySat · Sun—
7BEST Heat Pump Cleaning585.0★ (34)Sydney Mines, 12 km awaySat · Evenings—
8AAA Plumbing and Heating574.2★ (42)Sydney24/7—
9J. Wilkie Mechanical Inc574.8★ (36)Sydney——
10Clean Air Atlantic574.9★ (447)Sydney—Most reviews

The 27 best HVAC contractors in Sydney, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

  1. Ranked #1 in Sydney

    #1 Mercer Fuels Ltd

    Based in Sydney

    62/100CR Score

    Ranked #1 because of its Google rating and trade focus: 5.0★ from 228 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 228 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    64 Brookland St, Sydney, NS B1P 5B2
    View profile for Mercer Fuels Ltd(902) 539-4242

  2. #2 Happy Home Assistant

    Based in Sydney

    60/100CR Score

    Ranked #2 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 87 Google reviews
    Hours
    Mon–Fri 8 AM–7 PM · Sat–Sun closed
    Address
    64 Brookland St, Sydney, NS B1P 5B2
    View profile for Happy Home Assistant(902) 500-9828

  5. #5 Greenfoot Energy Solutions

    Based in Sydney

    59/100CR Score

    Ranked #5 because of its Google rating and trade focus: 5.0★ from 66 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 66 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    890 Victoria Rd, Sydney, NS B1N 1K2
    View profile for Greenfoot Energy Solutions(902) 706-0917

  6. #6 BEMAC HVAC LTD.

    Based in Sydney

    59/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.7★ from 12 Google reviews
    Hours
    Mon–Sun 8 AM–5 PM
    Address
    165 Bison Dr, Sydney, NS B1N 0A8
    View profile for BEMAC HVAC LTD.(902) 304-5217

  7. #7 BEST Heat Pump Cleaning

    Based in Sydney Mines, 12 km away

    58/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 34 Google reviews
    Hours
    Mon–Sat 9 AM–7 PM · Sun closed
    Address
    53 Convent St, Sydney Mines, NS B1V 1K2
    View profile for BEST Heat Pump Cleaning(902) 220-3546

  8. #8 AAA Plumbing and Heating

    Based in Sydney

    57/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.2★ from 42 Google reviews, listed on Google as “Plumber”.

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

    • 4.2★ from 42 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    471 Portsway Ave, Edwardsville, NS B2A 4S9
    View profile for AAA Plumbing and Heating(902) 564-8841

  9. #9 J. Wilkie Mechanical Inc

    Based in Sydney

    57/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.8★ from 36 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.8★ from 36 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    86 Mountain Rd, Sydney, NS B1L 1A9
    View profile for J. Wilkie Mechanical Inc(902) 565-7943

  10. #10 Clean Air Atlantic

    Based in Sydney

    57/100CR Score

    Ranked #10 because of its Google rating and review volume: 4.9★ from 447 Google reviews, the most in Sydney.

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

    • 4.9★ from 447 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    453 Portsway Ave, Edwardsville, NS B2A 3Y8
    View profile for Clean Air Atlantic(902) 562-1031

  11. #11 Hall's HVAC & Electrical

    Based in Sydney

    56/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.5★ from 24 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.5★ from 24 Google reviews
    Hours
    Mon 8:30 AM–4:30 PM · Tue–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    44 Reeves St, Sydney, NS B1P 3C5
    View profile for Hall's HVAC & Electrical(902) 904-5561

  12. #12 902 Plumbing and Heating

    Based in Sydney

    55/100CR Score

    Ranked #12 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Plumber”.

    Based on 7 of 10 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 22 Google reviews
    View profile for 902 Plumbing and Heating

  15. #15 Blue Ox Refrigeration Ltd.

    Based in Sydney

    54/100CR Score

    Ranked #15 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 5 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    340 Keltic Dr Unit L, Sydney, NS B1L 1V4
    View profile for Blue Ox Refrigeration Ltd.(902) 590-2240

  17. #17 ARL Mechanical Ltd.

    Based in Sydney

    54/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “HVAC contractor”.

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

    • 4.3★ from 6 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    618 Keltic Dr, Sydney, NS B1L 1B6
    View profile for ARL Mechanical Ltd.(902) 537-1905

  18. #18 Macaskills Oil Heat Services

    Based in Sydney

    53/100CR Score

    Ranked #18 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Heating contractor”.

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

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 8:30 AM–4:30 PM · Sat–Sun closed
    Address
    299 Borden St, Sydney, NS B1N 1H2
    View profile for Macaskills Oil Heat Services(902) 304-9004

  19. #19 SOS Plumbing and Heating

    Based in Sydney

    53/100CR Score

    Ranked #19 because of its Google rating and trade focus: 3.0★ from 6 Google reviews, listed on Google as “Heating contractor”.

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

    • 3.0★ from 6 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    22 Bayview St, Sydney, NS B1S 2C5
    View profile for SOS Plumbing and Heating(902) 577-2664

  20. #20 Cape Breton HVAC

    Based in Sydney

    53/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    181 St Anns St, Sydney, NS B1N 1B1
    View profile for Cape Breton HVAC(902) 317-5044

  21. #21 Clark's Oil Burner Services

    Based in Glace Bay, 19 km away

    53/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Heating contractor”.

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

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Sat 8 AM–12 PM · Sun 9 AM–12 PM
    Address
    23 Tenth St, Glace Bay, NS B1A 4L6
    View profile for Clark's Oil Burner Services(902) 849-3352

  25. #25 Cabot Heat Pumps and Ventilation

    Based in Glace Bay, 17 km away

    52/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.

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

    • 5.0★ from 7 Google reviews
    Hours
    Mon 8:30 AM–4:30 PM · Tue–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    20 Jones St, Glace Bay, NS B1A 3L2
    View profile for Cabot Heat Pumps and Ventilation(902) 304-5552

All 27 HVAC contractors

#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.

HVAC contractors in Sydney, ranks 26 to 27
RankBusinessCR ScoreGoogle ratingDistance
26EZ Flow Plumbing and Heating Ltd.495.0★ (3)In Sydney
27McPhee's Plumbing & Heating Ltd463.0★ (4)19 km

Also serving Sydney

17 more HVAC contractors within 40 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked HVAC contractors serving Sydney
BusinessGoogle ratingDistance
A B Mechanical Limited4.7★ (3)In Sydney
AMJ Plumbing & HeatingIn Sydney
B&M Burner Service LtdIn Sydney
Brent Rudderham Plumbing And Heating5.0★ (1)In Sydney
Brian Jessome's Plumbing & HeatingIn Sydney
Cape Breton Cooling Solutions Inc.In Sydney
Carmichael Engineering Ltd4.5★ (2)In Sydney
ClarTell Plumbing and HeatingIn Sydney
Household Hvac4.0★ (1)18 km
Maclean's Plumbing & Htg Ltd4.5★ (2)In Sydney
Max-Air Sheet MetalIn Sydney
McNeil W J Plumbing & Heating5.0★ (1)19 km
Oakley’s Heat Pumps and Ventilation LTD.5.0★ (1)In Sydney
Pro Desk at RONAIn Sydney
Pro Desk at RONA13 km
Somers Refrigeration1.0★ (1)In Sydney
Transit Plumbing & Heating LtdIn Sydney

How much do HVAC contractors cost in Sydney?

US national ranges converted to CAD, not adjusted for Sydney. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Sydney?
JobLowTypicalHighBasisChecked
AC replacementCA$5,460CA$8,400CA$11,350Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)October 2026
Furnace replacementCA$3,970CA$6,770CA$9,690Per system, installed; typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)October 2026

When to hire an HVAC contractor in Nova Scotia

In Nova Scotia, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Sydney HVAC contractors

We scored 27 Sydney HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

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 fromIn Sydney data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

HVAC contractors in Sydney: frequently asked questions

Who is the best HVAC contractor in Sydney?

By CR Score, the highest-ranked HVAC contractor in Sydney, NS is Mercer Fuels Ltd with a CR Score of 62/100. It has 5.0★ from 228 Google reviews. Happy Home Assistant (#2) and Mackenzie Electrical Services Ltd (#3) follow. We ranked 27 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Sydney?

ContractorsRanked ranks 27 HVAC contractors serving Sydney, NS. 20 of them are based in Sydney; the rest serve it from nearby towns. Another 17 within 40 km are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Sydney are open 24/7?

2 ranked HVAC contractors in Sydney post 24/7 hours. The highest-ranked are Mackenzie Electrical Services Ltd (#3) and AAA Plumbing and Heating (#8). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Sydney work on weekends?

4 of 27 ranked HVAC contractors post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are BEMAC HVAC LTD. (#6), BEST Heat Pump Cleaning (#7) and AAA Plumbing and Heating (#8). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Sydney?

AC replacement typically costs CA$5,460 to CA$11,350, with CA$8,400 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Sydney. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Sydney HVAC contractors have?

The median Google rating among 27 rated HVAC contractors in Sydney is 4.8★, with a median of 14 reviews. Clean Air Atlantic has the most, 447 reviews, and ranks #10. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Sydney?

In Nova Scotia, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How does ContractorsRanked rank HVAC contractors?

Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Sydney

  1. October 2026: CR Scores recalculated for 27 hvac contractors serving Sydney.

More HVAC contractors and Sydney pages

HVAC contractors near Sydney