Fall Furnace Flash Sale

Be prepared for fall and save up to $3,000 off select home heating systems. Limited stock available. Get yours before they’re all gone.

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Replacement & Installation of Central Home Heating Systems

Mr. Furnace Heating and Air Conditioning provides St. Catharines, Niagara and the surrounding areas 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 905-390-1726 or request a quote online today!


What Sets Us Apart

The friendly experts at Mr. Furnace have been the premier choice for furnace installation in St. Catharines and the Niagara region for over forty years.

We take our customer service seriously, which means that we aren’t satisfied until you are. We work hard to ensure every interaction you have with us is a positive one.

All of our technicians are required to have the correct certifications for their job, and receive ongoing training. This ensures that every installation is done correctly and meets our high standards. All of our employees are required to pass a background check and be bondable.

We have been serving the families of the Niagara region and St. Catharines since we first opened in 1978, and to this day we maintain our unwavering commitment to providing the highest-quality services and products.

Frequently Asked Questions

If your furnace is between 8 to 15 years old, you should be planning to replace it. Regular furnace maintenance can help prolong the life of your furnace. There is also some variance between different makes and models, which is why we offer free in-home assessments if you’re unsure.

The best time to install your furnace is before you need it. We recommend scheduling an appointment for your furnace in the fall before you switch your furnace on. That way we can assess your furnace for any necessary maintenance or repairs, or a full replacement. A preemptive assessment helps ensure your furnace will keep you warm all winter long.

We take every precaution to keep your home clean and damage-free when installing your new furnace. That said, we encourage you to remove all unnecessary items from your furnace room and to clear a path through your home. This makes the installation process more efficient for us and prevents damage to your belongings.

For an individual furnace, the estimated installation time is 4 to 6 hours. For furnace and air conditioning packages, the estimated installation time is 6 to 10 hours. How long installation takes will also vary depending on what package you choose and whether your furnace accessories also need to be replaced.

Different packages come with different accessories, which will influence the cost and the installation time of your new furnace. The cost and installation time will both increase for Premier and Optimum packages because we replace all accessories, including your ductwork and venting. Basic packages have a shorter installation time and reduced cost as we reuse these accessories.

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.

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.

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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