Tankless Water Heaters

Home Water Heaters

Enjoy endless hot water and save up to 50% on utility bills
Homeowners want the energy-efficient, endless supply of hot water only a gas tankless water heater can deliver. And no one builds a more complete line or gives you a longer warranty than Bosch.

Greentherm and Therm gas tankless water heaters include high efficiency gas condensing and non-condensing tankless water heaters with more compact models and greater installation versatility to satisfy every residential and commercial application.

Bosch Therm C 1210 ES Condensing

ASME certified
Up to 98% thermal efficiency
225,000 BTU maximum input
12.1 gallons per minute capacity

Bosch Greentherm C 1050 Condensing

Suitable for residential or commercial applications
Energy Factor 0.95
199,000 BTU maximum input
10.7 gallons per minute capacity at 35°F degree rise

Bosch Greentherm C 950 ES Condensing

Suitable for residential or commercial applications 94% thermal efficiency
Energy Factor 0.95
175,000 BTU maximum input
9.4 gallons per minute capacity at 35°F degree rise

Bosch Therm 940 ES Non-Condensing

Highest capacity non-condensing model
83%+ thermal efficiency
199,000 BTU maximum input
9.4 gallons per minute capacity

Bosch Therm 830 ES Non-Condensing

Suitable for residential or commercial applications
82%+ thermal efficiency
175,000 BTU maximum input
8.3 gallons per minute capacity at 35°F degree rise

Bosch Therm 520 HN Non-Condensing

Patented Hydro-power ignition requires no electricity
80%+ thermal efficiency
117,000 BTU maximum input
5.3 gallons per minute capacity at 35°F degree rise

Bosch Therm 520 PN Non-Condensing

Piezo ignition system requires no electrical connection
78%+ thermal efficiency
117,000 BTU maximum input
5.2 gallons per minute capacity at 35F degree rise

Bosch Therm 330 PN Non-Condensing

Piezo ignition system requires no electrical connection
77%+ thermal efficiency
74,900 BTU maximum input
3.3 gallons per minute capacity

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