Hot Water the Way You Want It

Mr. Furnace installs, services, and maintains electric, gas, and propane hot water heaters.

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The Hot Water Heater Experts For St. Catharines & the Niagara Region

What Sets Us Apart

Mr. Furnace has been the go-to choice for hot water heaters, furnaces, and air conditioners in St. Catharines and the Niagara region for over forty years. Our high standards, keen attention to detail, and friendly and knowledgeable staff you can rest assured that you are in good hands.

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

We maintain our high standard of service by ensuring that all of our technicians have the right knowledge and certification for the job, and receive ongoing training. We 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.

In recognition of our outstanding commitment to world-class customer service, the Better Business Bureau gives us an A+ rating. We also have an average of 4.5 stars on Google.

Frequently Asked Questions

How often you should replace your water heater can be difficult to say, but a rough estimate is every 7 to 15 years. The exact timeline depends on factors like the model, quality of installation, and maintenance of your hot water heater. If you’re not sure whether it’s time for a replacement, call us for a free in-home assessment.

The most obvious sign it’s time for a new water heater is if it’s not working properly or not working at all. That said, there are better ways to know before your water heater stops working. One of our experts can evaluate your unit at an annual maintenance appointment or at a free in-home assessment and let you know if it’s time for a new water heater.

How long installation takes will vary for every home, but a typical water heater installation is usually 2 to 4 hours. Installation time can be affected by the model of water heater you choose and the location of the water heater in your home. You can help make installation quicker by tidying our work areas before we arrive.

You can get your home ready for installation by removing any clutter or unnecessary items from the areas we’ll be working in. In most homes, this means emptying out your furnace room of any clutter and clearing a path through your home. By doing this, you’ll help us install your new unit as efficiently as possible.

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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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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