Hot Water Whenever You Want It

Tankless hot water heaters produce hot water on demand, so hot water is always available. Tankless hot water heaters are also smaller, more energy efficient, and longer lasting than traditional tank hot water heaters.

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Tankless Hot Water Heater Services for St. Catharines & the Niagara Region

What Sets Us Apart

Our team of hot water heater installation experts will install your new tankless hot water heater, check that it is running smoothly, and answer any questions you may have.

In recognition of our continued commitment to sterling customer service, the Better Business Bureau awarded us an A+ rating. We also have an average of 4.5 stars on Google.

We maintain our high standards by making sure that all of our technicians have the right knowledge and certification for the job, and receive ongoing training. We also stand behind all of the work we do and back our installations with a one year guarantee. All of our employees are required to pass a background check and be bondable.

Our high standards, keen attention to detail, and friendly expert staff have made us the company of choice for home comfort in St. Catharines and the Niagara region since 1978.


The Tankless Hot Water Heater Experts

Let our team of experts help you find the right tankless hot water heater for your home, answer any questions you may have, and ensure that your new hot water solution is installed correctly and running properly. We guarantee that you’ll be happy with your choice.

All tankless hot water heaters require regular maintenance to ensure that they are running at peak efficiency, and to maintain your family’s comfort and safety.

Could your family use a tankless hot water heater? Book your in-home assessment today.

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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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

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