Bosch Greentherm 9000 Outdoor Tankless Water Heater
Bosch Greentherm 9000 Outdoor Tankless Water Heater Review
The Bosch Greentherm 9000 Outdoor Tankless Water Heater is Bosch's premium outdoor condensing tankless. Exterior wall-mount configuration eliminates indoor venting.
Specs: 199,000 BTU natural gas input, UEF 0.94 condensing, 9.0 GPM at a 35°F rise, stainless steel heat exchanger. Sealed direct-vent exterior mounting. 15-year warranty on heat exchanger.
The Greentherm 9000 Outdoor is Bosch's flagship outdoor tankless. German engineering with acoustic refinement and smooth modulation. UEF 0.94 is competitive with Rinnai V94eN and Navien NPE-A outdoor variants.
About $2,400 unit, $3,500 installed. Right buyer: warm-climate primary residence with suitable exterior wall mount location, valuing Bosch engineering. Smaller US service network than Rinnai/Navien outdoor variants.