HVAC Services in Toronto & the Surrounding GTA​

Heating, cooling & air quality solutions to make your home feel just right, 24/7/365.

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Heating & Air Conditioning for Toronto & Greater Area

Heating, cooling, air quality and plumbing & drain service from expert technicians near you.

Mersey Heating and Air Conditioning is proud to provide Toronto and the surrounding GTA with dependable heating and cooling services for the home.

From quick and simple repairs to a full setup and installation of a brand-new system, we’re here to help you make your home feel just right with 24/7/365 service.

Our certified HVAC technicians are here to help, no matter the time of year – we offer full service throughout the Toronto & GTA. We are always available outside of traditional working hours and even on holidays at no extra charge.

Call us at (416) 752-8351 to speak to a Home Comfort Advisor about your HVAC needs in Toronto & the GTA or book a service online today!

Your local Lennox dealer.

Lennox logo

Looking for Lennox home furnace & AC solutions? We’re here to help.

As a Lennox Certified dealer across Toronto & the GTA, we’re your trusted service partner for installation, maintenance & repair of all Lennox-branded home comfort products.

Our techs know the ins & outs of these systems and are able to offer service at every level of need. From product support to fixes for a non-functional AC or furnace to a fresh, full-service install – we’re your local partners for all things Lennox.

Reviews From Google​

“John Park just performed our air conditioning tune up and as usual, held up Mersey’s reputation for excellent work. His attention to detail and willingness to explain his findings in terms we can understand is appreciated. He arrived within the period promised and completed the inspection/tune-up in a timely manner. We have an older unit that requires TLC and we credit the Mersey team with keeping it running worry free for another season. Thanks John!”​

Bram H., 5/5 Stars​

“From the time I called to make the emergency appointment, to the very end, the customer service and care was fantastic. Michelle on the phone (with her well-named cat) was informative, genuine and personable. And Miguel – he was just wonderful. Very knowledgeable and patient, and took extreme care in his work. He even gave us extra tips and tricks for clearing snow around crucial areas outside. Really, fantastic company.”

Bentley DC, 5/5 Stars​

Service Areas

  • Aurora
  • Concord
  • Downsview
  • East York
  • Etobicoke
  • King City
  • Maple
  • Markham
  • Newmarket
  • North York
  • Rexdale
  • Richmond Hill
  • Scarborough
  • Thornhill
  • Toronto
  • Unionville
  • Vaughan
  • Whitchurch-Stouffville
  • Willowdale

When Life Gets Unpredictable, We Can Help

Always On-Call

Always On-Call

We have NATE-certified technicians on-call twenty-four-seven, so someone is always available to help when you need it. There are never extra charges for after-hours service.

We Respect You ™

We Respect You ™

If you need help, our technicians offer a bit more. We guarantee that they will be courteous and respectful in your home, so you have one less thing to worry about.

Ready To Go

Ready To Go

Our fleet of trucks are always prepared with whatever we might need to help. With decades of experience in the industry, you can count on Mersey Heating & Air Conditioning.

Certified Technicians

Certified Technicians

All of our technicians undergo rigorous training, extensive background checks, and have a network of resources behind them. We’re always ready to help!

ENERGY STAR® for Your Home

We’re proud to offer ENERGY STAR® certified products, the gold standard for measuring energy efficiency in North America. Whether you’re looking for a furnace, air conditioner, water heater, or heat pump, all products with the ENERGY STAR® label have undergone rigorous testing for energy efficiency.

For you, this means lower emissions and a lower energy bill.

Contact Us For a Quote on HVAC Services in Toronto & GTA

Call Us. We’re Very Friendly



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24/7 365 SERVICE

647-366-5974 Request a Quote
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