The T-H3S series offers high efficiency Ultra-Low NOx condensing technology allowing for the use of 3" PVC venting and has 0" clearance to combustibles. Utilizing commerical grade copper alloy for the heat exchanger tubing. Indoor models are certified up to 10,100 ft. altitude

Also referred to as T-H3S-IN-P

The T-H3S-DV-P supplies hot water to domestic hot water systems (directly or indirectly) which can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor systems, and/or domestic & heating applications.

The T-H3S is a high efficient, condensing, tankless water heater perfect for residential applications. The T-H3S can produce enough hot water for three bathrooms in warmer climates or two baths in colder climates.

ENERGY STAR® qualified

15-year limited heat exchanger, 5 yrs limited parts Residential use

Primary heat exchanger utilizes commercial-grade copper alloy for 25 times better heat transfer than stainless steel

Secondary heat exchanger utilizes 316L stainless steel for better corrosion resistance

Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)

Integrated controls and power cord as standard features

Venting with Schedule 40 PVC, CPVC, PP, Category III stainless steel

Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes