Tankless & Conventional Water Heater Repair & Installation in St. Catharines

For reliable Water Heater Repair in St. Catharines, trust MACKAY Heating & Cooling. We provide professional repair and installation services for both tankless and conventional water heaters. Our certified technicians have over 50 years of experience diagnosing and resolving issues such as leaks, temperature inconsistencies, and system malfunctions. We also offer 24/7 emergency services to ensure your home has hot water when you need it most.

We specialize in the repair and installation of both tankless and conventional water heaters. Tankless systems offer continuous hot water and increased energy efficiency, while conventional units are dependable and budget-friendly. Our team ensures each system operates at peak efficiency, providing tailored solutions for your home’s needs. Simply search "Water Heater Repair in St. Catharines" to locate us quickly.

Quality Products

Top-tier HVAC products for lasting comfort.

Affordable Prices

Competitive rates without compromising quality.

Expert Technicians

Skilled professionals ensure perfect service.

Reliable Services

Dependable support, including 24/7 emergency care.

Our Services Include:

Water Heater Repair: From minor leaks to complete breakdowns, we diagnose and fix all water heater problems swiftly and effectively.
Water Heater Installation: Our team helps you choose the right water heater model and ensures a smooth installation process for maximum efficiency.
Regular Maintenance: Keep your water heater running smoothly and extend its lifespan with our comprehensive maintenance services.

Water Heater Repair in St. Catharines

When your water heater isn’t performing as expected, MACKAY Heating & Cooling provides expert Water Heater Repair in St. Catharines. Whether you’re dealing with leaks, unusual noises, or temperature fluctuations, our skilled technicians will quickly diagnose and fix the issue, restoring your water heater’s efficiency. We service all makes and models, ensuring reliable and effective solutions. Searching for Water Heater Repair in St. Catharines? You've found it!

Water Heater Installation in St. Catharines

If your water heater is outdated or needs replacement, MACKAY Heating & Cooling offers seamless Water Heater Installation in St. Catharines. We install both tankless and conventional water heaters, helping you choose the right model for your home’s needs. Our energy-efficient systems provide reliable hot water while reducing energy costs. We also offer flexible financing options to make upgrading your water heater more accessible.

Why Choose MACKAY Heating & Cooling?

Trusted Since 1967: Our professionals have expertise in all types of water heaters, including tankless systems.
24/7 Emergency Support: We’re available around the clock to handle any urgent water heater repair needs.
Transparent Pricing: Honest quotes and competitive rates with no hidden fees.
Flexible Financing: You can enjoy home comfort without breaking your budget.

Service Areas:

We proudly serve St. Catharines and the entire Niagara region, including Niagara Falls, Niagara-on-the-Lake, Welland, Thorold, Grimsby, Port Colborne, Pelham, and Smithville. Wherever you are, MACKAY Heating & Cooling is here to provide professional water heater repair and installation services.

Frequently Asked Questions (FAQs)

How do I know if my water heater in St. Catharines needs repair?

If your water heater produces inconsistent temperatures, leaks, or makes unusual noises, it’s time for professional water heater repair in St. Catharines.

How long does water heater installation take in St. Catharines?

Most installations, whether tankless or conventional, are completed within one day, depending on the system type and your home’s requirements.

What are the benefits of upgrading my water heater in St. Catharines?

Upgrading to a modern water heater increases energy efficiency, ensures consistent hot water, and can reduce energy bills in your St. Catharines home.

How often should I schedule maintenance for my water heater in St. Catharines?

Annual maintenance is recommended to keep your water heater operating efficiently and to prevent unexpected breakdowns.

Do you offer financing options for water heater installation in St. Catharines?

Yes, we offer flexible financing options to make water heater installation more affordable for St. Catharines residents. Contact us for more details.

For affordable Water Heater Repair in St. Catharines, contact MACKAY Heating & Cooling.

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HVAC Service Areas Across Niagara Region

MacKay Heating & Cooling

4.8

Based on 379 reviews

review us on

Heather Dennis

15:41 08 May 26

Brady made this entire process painless. He was polite, friendly and efficient. He took time to explain what would be happening and took pictures so that I could see the changes (very thoughtful as I am mobility challenged). The use of booties and even a red carpet on my basement stairs to ensure there would be no mess for me to clean up was much appreciated. There was no pressure from Fred, the salesman, in any decision making and they were able to give me an appointment fairly quickly. Many thanks to all involved. I would definitely recommend MacKay Heating and Cooling.

nedra lobo

13:45 08 May 26

Amazing service! Steve was not only professional but took the time to answer all my questions. Thank you!

Natasha

10:35 08 May 26

Please read this. I noticed your business has some negative reviews that may harm it. If you want to remove negative reviews from your Google Business contact me via the details in my profile. (Natasha)

Romella Lina

14:42 06 May 26

It was easy booking with MacKay and they were transparent with the pricing. Tyler did a great job with our AC maintenance. He arrived on time and was efficient. We will definitely reach out to them again for future HVAC service.

Emil Ivanov

12:59 30 Apr 26

Dylan was right on time, very polite and professional, checked everything and finished his part in a timely manner. Thanks!

Diane L

02:28 06 Mar 26

I found McKay’s at the St Catharines Home Show back in 2014. We picked them because they were knowledgeable on the subject heat pumps – they installed a new furnace and heat pump for us a few months later – and we have been dealing with them ever since. Everyone we have dealt with has been extremely nice and more importantly, they all go out of their way to provide top quality service. It has been a pleasure dealing with everyone at MacKay Heating & Cooling, with much appreciation.

Jordan Alaimo

17:42 05 Mar 26

I contacted Mackay Heating & Cooling for a quote on a new hot water tank. Tyler arrived at our home within an hour and was very friendly and professional. He provided a detailed quote at no charge, which we really appreciated.

We decided to move forward with the installation, and Chris and Zack came the next day. They removed the old tank and installed the new one within a few hours. The whole process was smooth and efficient.

We’re very pleased with their work and the excellent service from the entire team. I would definitely recommend this company to anyone looking for reliable heating and cooling services.

Melissa Stoddart

04:34 25 Jan 26

I called at 930 pm for an emergency service call. The young man was very polite and thorough on the phone. He arrived on time. He explained clearly what he had done to assess the problem. Diagnosed and fixed the issue within an hour. Super personable and very professional. I highly recommend this company.

Patrick Lynch

16:26 22 Jan 26

After doing initial research, found MacKay Heating & Cooling was top of recommended local companies for tankleess hotwater , HVAC service, installation and maintenance. After meeting with Fred for quotation, i was impressed with experience and knowledge. This convinced me to go with them. When I phoned office to accept quote, the friendly office personnel quickly provided helpful service and advised a install date with expected time of arrival on date. On day of install a text message was sent by tech to advise they were on their way. The first tech Dave arrived at 8:03 to layout floor mats on exposed floor so they could not cause any mess while coming and going. As well to start drain of existing tank. Chris showed up shortly after and the removal of old and install went very well. A highly professional crew and final result was exceptional, piping for water, venting, natural gas and drainage were clean and square.
I highly recommend MacKay’s team of professionals.
Pat Lynch, Grimsby, Ontario

Dennis Munn

17:47 06 Jan 26

One of those absolutely perfect service calls. A job extremely well done with a very knowledgeable, professional and pleasant technician. And as well a very pleasant and knowledgeable person at the end of the phone line when I booked this. The quoted price when booking over the phone was exactly what I ended up paying.I highly recommend MacKay heating and cooling and the technician David.