Bosch Greentherm 7.2 GPM Natural Gas Tankless Water Heater
Bosch Greentherm 7.2 GPM Natural Gas Tankless Water Heater Review
The Bosch Greentherm 7.2 GPM Natural Gas Tankless is Bosch's premium residential condensing tankless. The Greentherm line is Bosch's flagship US residential tankless, positioned to compete with Rinnai and Navien at the premium tier.
Specs: 160,000 BTU natural gas input, UEF 0.93 condensing, 7.2 GPM at a 35°F rise or 3.5 GPM at a 70°F rise, stainless steel heat exchanger, PVC condensing venting. 15-year warranty on heat exchanger.
The 160K BTU class is right-sized for 2-bath warm-climate homes or 2-3 bath warm-climate homes with sequential demand. The Greentherm engineering is European-style with attention to acoustic and modulation refinement — quieter operation and smoother modulation than typical mid-tier residential tankless.
Bosch positioning: German-engineered quality at premium pricing, smaller US service network than the volume brands. Service through Bosch-authorized dealer network. About $1,600 unit, $3,400 installed.
Right buyer: 2-bath warm-climate home wanting Bosch engineering and the quiet operation advantage. Wrong buyer: cold-climate primary residences (winter GPM falls below 4.5 GPM, marginal for 2-bath), 3+ bath homes (need 199K BTU class).