Grimsby, ON

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Grimsby, ON
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Best HVAC Contractors in Grimsby, ON

15 companies listed · 7 in Grimsby · 9 open 24/7 · 12 open weekends · 13 rated 4.5+

Data verified October 21, 2026

Aldershot Air Conditioning and Heating

Aldershot Air Conditioning and Heating

4.9 49 reviews
“Filled up the unit and agreed due to the age of it and the small leak to just wait and hope it lasts another 2-3 years before replacing the whole thing down the road.”
Free consultationLicensedOpen 24 hours20+ yearsFamily-owned
411 Bartlett Ave
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Hubbard Air

Hubbard Air

4.9 50 reviews
“He carefully explained everything in detail and gave us options to work with.”
Insured24/7 emergency serviceFamily-ownedSince 2004
17 John St
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Premium Home Services Inc.

Premium Home Services Inc.

4.7 48 reviews
“I've used Premium twice and found them to be honest and hardworking both times.”
Free estimates24/7 emergency service100% satisfaction guaranteeTSSA-certifiedServes Hamilton, Burlington, Niagara PeninsulaMaintenance plan $369/yr
31 Beech St
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Niagara West Heating & Cooling

Niagara West Heating & Cooling

5.0 20 reviews
“Piero was here first thing and didn't leave until he made sure everything worked as it should.”
Licensed20+ years
52 Chestnut Dr
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M & K Heating and Cooling Comfort Services Inc.

M & K Heating and Cooling Comfort Services Inc.

4.6 7 reviews
“I highly recommend M & K Heating & Cooling for all your heating and cooling requirements.”
Free consultation
42 Donland Ave
FAQs
How often should I change my furnace filter?
Most filters are changed every 60 or 90 days and at 12 months replace them, however, it depends on how clean your duct work is. The best practice is to check your filter every time you pay your gas bill, and change it as required as a dirty filter will increase your gas cost and a clean filter will save you money and will provide greater comfort.
How often should I replace my thermostat?
Depending on which thermostat you have, they are usually out of calibration within 5 yrs, meaning the temperature set is no longer accurate. However the new ones on the market with Wi-Fi capabilities are self-calibrating.
What does AFUE stand for?
There are special names for the efficiency ratings of various types of equipment. Gas furnaces are rated according to their Annual Fuel Utilization Efficiency, or AFUE. The higher the AFUE rating, the more efficient the unit.
When should I consider replacing my Furnace or AC?
Our technician will assist you with deciding based on the age of the unit and the past history of repairs and current performance. Typically when a technician determines that your furnace has a defective heat exchanger, its time to consider a new furnace as it may be the first indication that other parts are about to fail and require replacement. In the case of an air conditioning, usually replacing the ac unit is often recommended when there is a refrigeration leak in the system.
This information can be found on the FAQ page on our website.
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Niagara Mechanical

Niagara Mechanical

Orchardview Village Square, 155 Main St E
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The 15 companies listed for Grimsby, ON handle furnaces and heat pumps in winter and the cooling side in summer. Profiles repeat what each firm publishes about hours, licensing and brands, with ratings and review quotes gathered from public reviews.

Area overview: Grimsby, ON

7 of the 15 companies we list are based in Grimsby; the other 8 serve Grimsby from towns including Hamilton (27 km), Stoney Creek (16 km) and Smithville (10 km). 14 of the companies on this page have a rating, from 3.9 to 5.0 across 3,694 reviews; 11 have 50 or more reviews and 13 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), responsiveness (90%) and quality (84%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "cleanliness". 9 are open around the clock and 12 are open on weekends. 5 show a licence on their websites. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2004. 9 offer emergency call-outs; 4 offer financing or payment plans; 5 give free estimates; 5 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.

Do any heating firms listed for Grimsby work on Saturdays or Sundays?

Saturday or Sunday hours show up for 12 of the 15 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.

C & E Maintenance

C & E Maintenance

3.9 8 reviews
“Thorough and skilled—C & E Maintenance handled my repairs with care.”
159 Main St E
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Shipton's Heating & Cooling Ltd

Shipton's Heating & Cooling Ltd

4.8 50 reviews
“Owen always does a great job, very professional and is concerning, ensuring he fixes the issue.”
Coupons & offersLicensedOpen 24 hoursFinancingLocally owned
Hamilton, ON · 27 km from Grimsby
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Book onlineBook
Spurr Heating & Air Conditioning

Spurr Heating & Air Conditioning

4.9 48 reviews
“After calling about an issue with my AC, they had someone out to inspect it within an hour.”
15+ yearsServes Hamilton, BurlingtonMaintenance plansLicensedOpen 24 hoursFinancing
Hamilton, ON · 27 km from Grimsby
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Environmental Heating & Cooling

Environmental Heating & Cooling

4.9 49 reviews
“Very happy with the products and services provided by Environmental Heating and Cooling..”
Free estimatesLicensed (TSSA)Financing available300+ homes servedSince 2014Serves Smithville, West Lincoln +4
Smithville, ON · 10 km from Grimsby
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B & G Heating & Cooling

B & G Heating & Cooling

4.6 41 reviews
“They installed a new thermostat once they realized that I was having bad experiences with the current one, went out of his way to get me an amazing deal.”
Coupons & offersOpen 24 hoursFamily-ownedFinancing
Hannon, ON · 19 km from Grimsby
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Hamilton Home Comfort

Hamilton Home Comfort

4.8 50 reviews
“Jerry gave us clear information and fair prices when we needed a new Air Conditioner.”
Free estimates24/7 emergency serviceFinancing availableServes Greater Hamilton Area, Halton, NiagaraSince 2008
Stoney Creek, ON · 16 km from Grimsby
Featured

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A Rescue Rooter

A Rescue Rooter

4.8 45 reviews
“Highly recommend using this company as they provide excellent service in a very timely fashion.”
24/7 emergency serviceLicensedFamily-ownedLocally owned
Hamilton, ON · 27 km from Grimsby
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Marty's Heating and Air Conditioning

Marty's Heating and Air Conditioning

5.0 50 reviews
“They get the job done quickly and efficiently, and any bumps along the way are faced with a calm confidence that only a seasoned and experienced company can provide.”
Free estimatesSince 2011Serves Niagara Region
Fenwick, ON · 19 km from Grimsby
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Capo Climate Control Solutions

Capo Climate Control Solutions

5.0 50 reviews
“Definitely someone you want to contact when something goes wrong with your furnace or air conditioning.”
Since 2023
Stoney Creek, ON · 16 km from Grimsby
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HomeHeating & Air Conditioning, HVACOntarioGrimsby, ON

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