Stay Cool This Summer With Air Conditioning

Ontario summers can be hot and muggy. Beat the heat with an air conditioner from Mr. Furnace.

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Air Conditioning Installation Serving St. Catharines & the Niagara Region

What Sets Us Apart

We aren’t satisfied until you are satisfied. That is why we do everything possible to ensure that each customer receives the top notch customer service experience we are known for. Our entire team works hard to ensure that your experience goes smoothly from start to finish.

Mr. Furnace is a locally owned and operated company and has been helping local families stay cool since 1978. From the first day we opened our doors we have remained committed to providing all of our customers with top-notch products and parts, excellent customer service, and quality craftsmanship.

We are committed to providing our customers with products they can trust and craftsmanship they can rely on so that they can enjoy their air conditioner for years to come.

We have been helping Niagara families stay cool for over forty years. When you choose Mr. Furnace, you know that you are choosing a company with a sterling reputation that always puts their customers first.

What Customers Say

“A big thank you to the two employees (Tyler and Everit) that installed our new furnace, our first A/C unit and our first tankless water system. They also installed some new ducting to heat up our upstairs with little mess and neatly installed with just a small bulkhead to hide it. Also a big Thank you to Scott who guided us through the many different options that were available.”

- John M.

“My wife and I have been long-time customers of Mr. Furnace. They have always done excellent work for us and have been very reliable. We bought a new furnace and A/C from them some years back, and the price was competitive and the systems have been great. The service workers are unfailingly courteous and scrupulously clean, and the phone staff are friendly and efficient. We are pleased to give them a five-star rating and are frankly baffled that several people have given them such poor ratings.”

- Carolyn D.

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We’re The Experts On Furnaces and More

Mr. Furnace Heating & Air Conditioning is the preferred choice for home comfort in the St. Catharines and Niagara region. In fact, we have been for over 40 years. And now, as part of the Right Time™ Heating and Air Conditioning group, we are able to serve you even better.

With a larger network of experienced professionals, exceptional training and certification, as well as the added value of standard guarantees, you can trust Mr. Furnace for all of your HVAC needs.

Frequently Asked Questions

If your air conditioning system is properly installed and maintained, it could be keeping you cool for well over a decade. On average, an A/C system only needs to be replaced every 8 to 15 years. This depends on a variety of factors, however; such as what type of system you have, how well suited it is to your home, how old it is, and how frequently it is used.

How to best prepare for your air conditioner to be installed may depend on what type of unit it is. Regardless, clearing the path to the installation area is important. You should also ensure the furnace room and that the outside area where the unit will be installed is accessible. It’s best to ask this question during your complimentary in-home assessment as every household and installation is unique.

Your new air conditioning unit should be installed in approximately 4 to 6 hours. However, this could vary depending on factors such as what type of unit is being installed and whether there is an old unit that needs to be removed. To keep things efficient, do your best to ensure that the installation areas are readily accessible.

It’s not absolutely necessary that you are home during your installation, but it is preferred that you are there to let us in and show us around. It’s also recommended that you are home towards the end of the installation, so we can show you how to properly use your new system and address any questions you may have.

This depends entirely on the amount of work being done. If you are simply upgrading a small ductless unit, it would not take as long as an entire forced air system might. If you have also purchased accessory packages that include upgrading things like air conditioning lines rather than using the old lines in your home, this will also cost more and take longer.

Our Guarantees

Whether we are installing an air conditioner or repairing your furnace, the team at Mr. Furnace stands behind our work. We aren’t satisfied until you are satisfied, and we will do everything we can to ensure that your experience with us is a great one.

Why Choose Us?


No Loopholes™

We aren’t satisfied until you are 100% satisfied with our craftsmanship, products, and materials. If within two years of the date of installation, you are not completely satisfied with our service or the quality and performance of your home comfort system, and we can’t make it right for you then we will gladly remove the system and return your original investment.


No Hassles™

If your new system breaks down within the first year, leaving you without heating or cooling, we guarantee that we will repair your equipment within twenty-four hours of your call or we will fix your problem for free and give you $1,000 to apologize for the inconvenience.


Just Right™

Not too hot, not too cold… Just Right!™ If your system does not achieve the temperature you desire, we will make any modifications up to and including replacing the entire system at no charge.


We Respect You™

We promise that while our technicians are in your home, they will respect your property, protect it from damage, and leave their work area as clean as they found it. If we fail to meet any of the high standards we have set for ourselves, we will give you our full Five Year System Check-Up Package free of charge.

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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.

Over 40 Years of Expert Service

Since 1978, the friendly experts at Mr. Furnace have serviced over 15,000 homes and counting!

15, 000
Furnaces Installed
15, 000
Homes Serviced
Star Rating
On Google Reviews

Satisfaction Guaranteed

We guarantee all of our work for one year after the date of installation.

Decades of Experience

Mr. Furnace has been serving families in St. Catharines and the Niagara region since 1978.

Locally Owned & Operated

Our customers are our neighbours – we’ve been Serving local families for over forty years.

24-Hour Service

Reliable service, whenever you need it. No additional charge for after-hours, weekend, or holiday appointments.

Right Time™ Certified Technicians

All of our technicians undergo a thorough background check and extensive training.

Exceptional Customer Service

We have an average 4.5-star rating on Google, and the Better Business Bureau® has awarded us an A+ rating.

24/7 365 SERVICE

905-688-6296 Request a Quote
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