Residential Air Conditioning Installation in Toronto & the GTA

Reliable central home air conditioning replacement and installation services from certified technicians near you.

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Home Central Air Installation Services

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

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


Our Advantage

Our technicians receive training from North American Technician Excellence; Canada’s Leading HVAC training organization.

Our technicians arrive on time, work efficiently, and leave your home exactly as they find it.

The Better Business Bureau® A+ ratings is a ringing endorsement of our trustworthiness.

Our team will meet with you at home to discuss your home comfort needs, at no charge.

What Customers Say

“I chose Mersey as a result of going over their reviews online. I am very pleased with the results. They are experts in their work and true to their word. We had an A/C unit put in and a new thermostat. They made sure that everything was up and running perfectly and they pay attention to the small details like cleaning up after themselves. I will definitely be using them again.

- Philip S

“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

Your air conditioning system should be replaced between every 8-15 years. However, this is dependent on a few different factors. If your A/C unit has been installed correctly and is properly maintained, it could run well even longer. If it is used too much, or too little, if the system – including your ducts are not routinely cleaned, or if you allow repairs to go unmade, your air conditioning unit may need to be replaced sooner than later.

Because every home is unique, your best bet is to ask this question during your complimentary in-home assessment. The answer could also depend on what type of unit is being installed. But, regardless, it’s always best to ensure that the path is clear for the technicians to access the installation area. Move furniture if necessary and if you have children, ensure their toys are put away. It’s also good to have the furnace room clear, as well as the outside area where the air conditioning unit will be.

The installation of your new air conditioning system should not take longer than 4 to 6 hours. This is the average we’ve found across the board, but there are always different factors at play. These may include things such as what kind of system is being installed, whether there’s an old system that needs to be removed, or, of course, any unexpected complications. The preparedness of our technicians ensures that we never take more time than needed.

It’s not necessary that you’re home during the entire installation, but we do recommend you are there for the beginning and the end. If you are home when we arrive, it allows you to let us in and show our technician around. We prefer for you to be present at the end of the installation so that we can talk you through using your new equipment and answer any questions you may have.

This truly depends on what system and accessory package is being installed. For example, if you are only opting to have the unit replaced, it may not cost as much time or money. But if you are installing new air conditioning lines or getting ductwork done, it will generally take longer and cost more.

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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