Integrated ECM pump and DHW diverter valve on all models
Modulating Combustion up to 11:1
Small zone valve systems may not require an additional pump or a low loss header
Easy service access and quick component connections
Get the NTI High-Efficiency Boiler in just a few steps
Make an order
Contact us to buy a new boiler. Our team will guide you every step of the way and help you choose the right model.
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
We'll deliver the boiler to your location, and our experienced experts will handle the installation efficiently and professionally.
Get a warranty
You receive a warranty that covers various components and services, and when it ends, you can count on our post-warranty services.
Why should you buy a High Efficiency Boiler NTI from us?
9.7/10
215 reviews
5/5
1173 reviews
Jessyca Daley
Mar 10, 2026
Great service and very knowledgeable!Thank you!
Jarek Walter
Feb 28, 2026
We had a problem with our furnace. I placed a phone call to Superior. To my total surprise, technicians arrived to my place within two hours. They were friendly, profesional and diagnosed the problem.Highly recommend their service.
Maya Singh
Dec 17, 2025
Ryan from Superior HVAC fixed our gas value in our furance! just in time for winter thank you so much again!
We will deliver a NTI Boiler High Efficiency to any of these cities
Mar 10, 2026
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