Residential Furnace Installation in Toronto & the GTA

Stay warm all winter long without wearing out your wallet with Mersey’s central home heating installation services. 

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Replacement & Installation of Central Home Heating Systems 

Mersey Heating and Air Conditioning provides Toronto and the surrounding GTA with professional furnace installation from certified HVAC technicians near you, with consistent, reliable post-service repairs and maintenance. 

  • Full replacement & installation of central home heating systems 
  • Fast, post-installation home furnace emergency repairs, available 24/7/365  
  • Friendly ongoing furnace maintenance that prevents long-term problems following your system setup
Call us at (416) 752-8351 or request a quote online today!


Our Advantage

All of our technicians are trained extensively in-house and certified by North American Technical Excellence; Canada’s best HVAC training organization.

We’ll meet with you to evaluate your needs and discuss your options. No cost, no pressure, and no commitment.

We will never try to upsell you. Our technicians always recommend the solution with the best value for your home.

A furnace is a big investment. We offer a range of financing solutions to alleviate stress and make your home comfort more affordable.

What Customers Say

“Just had a new Lennox Elite two stage furnace and air conditioner installed today. This was a deal through Costco. Good discounts and a competitive price, not the lowest, but the service and the overall install and product were excellent. I would highly recommend Mersey Heating if you’re looking for a top notch install with a great line of products and service.”

- Chris W.

“Mersey has excellent products and wonderful service. We had them install our furnace and air conditioning last year and have marveled at their service as well. Nick was our technician today and as with our other service people, gave us prompt, clear (explained everything he was doing), considerate service. 5 stars all the way!”

- Connie H

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Frequently Asked Questions

How often you need to fully replace your furnace depends on a variety of factors including the make, model, and maintenance of your unit. Typically, you can expect to replace your furnace every 8 to 15 years. If you’re unsure whether it’s time for a new furnace, call us for a free in-home assessment.

We do everything we can to make the installation process as easy as possible for you. All we ask is that you clear a pathway for us and remove any extra items from your furnace room. This allows us to work more efficiently and prevents potential damage to your belongings.

The length of the installation process will vary depending on a few factors. For a furnace, the estimated installation time is 4 to 6 hours. For a furnace and air conditioning system package, installation can take 6 to 10 hours. We can provide you with a detailed estimate at the time of your in-home assessment.

No, you do not need to be home when we install your furnace. That said, we recommend you’re there to let us in and there when the installation is complete. This allows us to brief you on how to operate your new furnace. It’s also an opportunity for us to discuss any concerns and for you to ask any questions you might have.

Installation costs and times will vary mostly based on what accessory package you choose. If you choose a Premier or Optimum package, the cost and installation time will both increase as we replace all accessories including your ductwork and venting. For a basic package, your existing furnace accessories are reused, shortening the installation time and reducing the cost.

Our Commitment to You

We honestly believe that we are the best at what we do. By developing below guarantees, we hold ourselves accountable to our own standards, while giving you the peace of mind that our success hinges on your satisfaction. With Mersey Heating and Cooling, you know exactly what you’re going to get. We guarantee it.

Why Choose Us?


No Loopholes™

Your satisfaction is our priority. If you’re unsatisfied with our work, products, or materials within 2 years of the installation date, we’ll do our best to make it right. No Loopholes™, just accountability.


No Hassles™

We stand behind the work we do. If within two years of your installation, you find yourself without heat due to a system breakdown, we will repair the issue within 24 hours of your call, or we’ll offer you $1000 for your inconvenience. No Hassles™, just results.


Just Right™

Consistency is key. If your system doesn’t give you the set temperature you desire within the first 5 years, we’ll make the necessary adjustments, up to and including replacing the system at no charge. No fluctuations, Just Right™


We Respect You™

We hold our technicians to the highest possible standard, and expect everyone on our team to respect you, your family, and your property. If we fail to live up to these standards, we will gift you with our full 5-year system check-up package at no charge. We Respect You™.

Call Us. We’re Very Friendly



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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.


Our technicians are NATE-certified, an industry-leading training organization.

Always Available

We’re ready to help – twenty-four hours a day, seven days a week, year-round.

Satisfaction Guaranteed

Our installations are protected by our guarantees.

Trusted Experience

We’ve been at work in the Greater Toronto Area for over 45 years.

Your Local Source

Locally owned, locally operated – we take pride in serving our community.


Our average Google rating of 4.8 stars proves our commitment to excellence.

24/7 365 SERVICE

647-366-5974 Request a Quote
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