Takagi T-H3-OS-N Outdoor Condensing Tankless Water Heater

The Takagi T-H3-OS-N is an outdoor condensing tankless water heater in the Takagi (Rheem-owned) line. "T-H3" identifies the 199K BTU condensing model; "OS-N" means outdoor sealed natural gas.

Specs: 199,000 BTU natural gas input, UEF 0.95 condensing, 9.8 GPM at a 35°F rise, dual stainless heat exchanger. Sealed direct-vent exterior mounting. 15-year warranty on heat exchanger.

The outdoor configuration is common in warm-climate markets where exterior mounting is code-acceptable. Eliminates indoor venting cost and frees indoor space.

About $2,200 unit, $3,400 installed. Right buyer: warm-climate primary residence with suitable exterior wall mount location, particularly retrofit replacements where eliminating indoor venting saves significant install cost.

Takagi is fully integrated into Rheem's service network — service through any Rheem plumber, parts at Home Depot pro counter.