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Leverage Your Existing Furnace & Duct System With Forced AC

Our Right Time™ certified technicians are able to install, repair, and maintain your forced air air conditioning unit so that you can stay cool and comfortable all summer long.

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Heating & Air Conditioning for St. Catharines & the Niagara Region Area

Forced Air Conditioning for St. Catharines & the Niagara Region

What Sets Us Apart

  • Standard of Excellence – All of our technicians are experts in their field and provide you with the high-quality installation, repair, and maintenance services you know you can expect from us. We back all of the work we do with a one year guarantee.
  • 40 Years of Experience – The experts at Mr. Furnace have been serving families in the St. Catharines and Niagara region since 1978. With decades of experience, you can rest assured that you’re in good hands.
  • The Local Choice – Mr. Furnace is a locally owned and operated business that has been helping families in St. Catharines and the Niagara region stay cool since 1978. Our customers are also our neighbours, and it shows. From day one we have been committed to providing our customers with high-quality products, excellent customer service, and unparalleled craftsmanship.
  • Right Time™ Certified – All of our technicians possess the correct certifications and receive ongoing training, so you can rest assured that your technician is an expert in their field, and all of our employees are required to pass a background check and be bondable.

Heating & Air Conditioning for St. Catharines & the Niagara Region Area

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.

What Homeowners Say About Mr.Furnace’s HVAC Services

From the home comfort specialist to the installers, Mr. Furnace was a pleasure to deal with and very accommodating. They went above and beyond from initial consultation to the end of installation. They committed to everything they said they would do and more. All work is certified and looks very clean and neat. They are even coming back in the spring for AC unit start up. If you need a new furnace, air conditioner, or just service I highly recommend Mr. Furnace.“​

I have had the best quality service, maintenance and assurance of safety and performance of the furnace and humidifier unit! Matt and others have been professional and explained the issues of concern. This was a scheduled annual maintenance and some problems needed tending to proactively rather than waiting for the system to break down. I am so glad I joined the monthly program. A superb company and team!“​

Heating & Air Conditioning for St. Catharines & the Niagara Region Area

Satisfaction Guaranteed

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

24-Hour Service

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

Decades of Experience

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

Right Time™ Certified Technicians

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

Locally Owned & Operated

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

Exceptional Customer Service

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

Book a Home HVAC Service with the Pros at Mr. Furnace