Small zone valve systems may not require an additional pump or a low loss header
Modulating Combustion up to 11:1
Integrated ECM pump and DHW diverter valve on all models
Get the Gas Combi Boiler in just a few steps
Make an order
Contact us to start the process of purchasing a new boiler. Our customer support team will guide you through all the necessary steps.
Arrival of a technician
After confirming your order, our technician will arrive at the appointed time to inspect the property and clarify the necessary details.
Delivery and installation work
After the assessment, we will deliver the boiler to you. Our experts will carry out the installation efficiently and professionally.
Get a warranty
Our warranty covers various parts and services, and even after its expiration, we provide reliable post-warranty services.
Why should you buy Combi Boilers Gas from us?
9.7/10
215 reviews
4.9/5
1195 reviews
TARUN R
Jul 24, 2026
Very respectful technician who explained the repair in terms I could understand. I felt informed throughout the visit
Dan Drakeford
Jul 08, 2026
Great job, fast service, thank you!
Deb Oldfield
Jul 07, 2026
Overall, I had a good experience. The repair turned out to be much more complicated than anyone expected, and in the end my air conditioner needed to be replaced rather than repaired. While it was frustrating to be without A/C during an extreme heat wave, the team was responsive, kept me informed, and worked to get everything resolved. The new unit is working great, and I'm very happy with the final result. I appreciate their professionalism and would recommend them.
Chandra Vanderboom
Jul 07, 2026
Superior was quick to service my broken water heater; next-day service and I had a new heater up and running. Very professional and friendly.
hirdthis
Jul 02, 2026
Technician came and accessed the problem installed new unit same day. Highly recommend.
Stuart Hiller
Jun 10, 2026
We had persistent humidity and mold issues in our bathrooms and the team assessed the whole ventilation system. They upgraded the exhaust fans and tied them into proper exterior venting. the moisture problem is completely gone
yo vendo
May 21, 2026
Excellent service from start to finish. The team was professional, punctual, and completed the air conditioning installation quickly and efficiently. They took the time to explain everything clearly, kept the work area clean, and made sure the system was working perfectly before leaving. Very friendly and easy to deal with. I’m very satisfied with the overall experience and would definitely recommend them to anyone looking for reliable HVAC service.
Binu
Jul 16, 2026
Replaced a cracked condensate pan under our attic air handler before it caused water damage. Quick response time
Duval Jenness
Jun 07, 2026
Superior HVAC Service did a thorough seasonal maintenance tune-up that brought our aging system back to peak performance. The technician chemically cleaned the heavily fouled outdoor condenser coils, checked the compressor amp draw against factory specs, and provided a comprehensive digital health report of our system.
David Milleri
Apr 30, 2026
We recently upgraded to a heat pump installation in Ontario and chose Superior HVAC. They answered all our questions and handled the install professionally. The system is quiet and efficient. Very satisfied.
Ryan
Apr 26, 2026
Superior HVAC was quick for my emergency! Will use again
M Rodic
Mar 30, 2026
Superior HVAC Service is excellent. Great customer service and very good work. They were helpful and assesed my situation based on my needs. I will call them again when I need more work done.
We will deliver a Boiler Gas Combi to any of these cities
Jul 24, 2026
Ajax