Canadian-engineered condensing boilers built for cold climates
N.T.I. (National Thermal Industries) is a Saint John, New Brunswick manufacturer of high-efficiency gas condensing boilers engineered for Canadian heating demands. Its fire-tube and stainless-steel heat-exchanger lineup spans heating-only and combi models with embedded Wi-Fi connectivity. NTI is widely installed across Canada and is known for strong modulation and a limited-lifetime heat-exchanger warranty on its premium lines.
3 series · 9 individual models. Click any series for full specs, pricing, and installation details.
Premium heating-only fire-tube condensing boiler
The TFTN, or Trinity Fire Tube, is NTI's heating-only condensing boiler line spanning residential through light-commercial loads up to 399,000 BTU/hr. It uses a stainless-steel fire-tube heat exchanger with flexible venting up to 150 feet and a limited-lifetime heat-exchanger warranty.
Efficiency
Up to 96% AFUE
BTU Range
399,000 BTU/hr
Models
4
Wall-hung condensing boiler with Wi-Fi
The FTVN is NTI's vertical down-fired stainless-steel condensing boiler with an integrated ECM pump and embedded Wi-Fi connectivity. It offers 10:1 modulation and is available in heating-only and combi configurations.
Efficiency
Up to 95% AFUE
BTU Range
399,000 BTU/hr
Models
2
Wi-Fi condensing combi for heat and hot water
The TRX is NTI's high-efficiency condensing combi boiler, pairing an XTRATECH stainless-steel heat exchanger with embedded Wi-Fi and an integrated ECM pump. Combi models deliver space heating plus on-demand domestic hot water with up to 11:1 modulation.
Efficiency
Up to 96% AFUE
BTU Range
197,000 BTU/hr
Models
3
Permit pulled, full commissioning, warranty registration.
Diagnose error codes, faults, and failures across all models.
Annual service keeps warranty valid and efficiency high.
Same-day no-heat, leak, gas-smell & CO-alarm response.
Seeing a fault code or a specific problem? Start with our NTI guides — then call a licensed BC gas technician for anything touching gas, combustion or safety controls.
We service NTI boilers in every Greater Vancouver community. Same-day response in our core service area.
Real 5-star Google reviews from CANRO Boiler Service & Repair customers across Greater Vancouver.
Nikita Bhatia
Joe and Allan are a great team. They gave me the right advice and helped me make a good decision with my heating system. Professional, knowledgeable, and a genuine pleasure to deal with from start to finish.
William
Canro boiler services were genuine life savers. I was stuck without heat overnight and they came by and got my boiler running again. Fast, professional, and genuinely caring about their customers. Could not recommend them more highly.
Arlene Colasurdo
Five stars for Canro Boiler Service and Repair. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed professionally and efficiently. The difference in heating performance and cost savings has been remarkable.
Same-day repair · Free install quotes · Licensed BC gas-fitters