Integrated ECM pump and DHW diverter valve on all models
Small zone valve systems may not require an additional pump or a low loss header
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
4.9/5
1206 reviews
Aeris Kendall
Jul 16, 2026
Our heat exchanger was showing early signs of rust and cracking during a routine inspection. They caught it before it became a carbon monoxide risk and helped us plan a replacement. Really appreciated their honesty and safety focus
Gabrielle Mclean
May 13, 2026
Called for an urgent AC issue. Ryan showed up the same day I called and was able to diagnose my gas valve as the issue. The repair was done the same day and I wouldn’t hesitate to call them again.
We will deliver a NTI Boiler High Efficiency to any of these cities
Jul 16, 2026
Ajax