Residential Water Heaters

Residential Water Heater Bosch

Bosch Residential 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. So which model is right for you? Click on 'Download Specs' to learn more about each model.

Therm C 1210 ES

This is the highest performance, fully condensing gas tankless water heater from Bosch. Unlike traditional non-condensing models, condensing technology captures heat from the exhaust gas and uses it to preheat the incoming cold water. This increases efficiency and reduces emissions – well ahead of the 2012 Low NOX emissions standards set by SCAQMD (California's South Coast Air Quality Management District).

Features & Benefits

  • Up to 98% thermal efficiency
  • 225,000 BTU maximum input
  • 12.1 gallons per minute capacity at 35F degree rise
  • Minimum activation flow rate of 0.5 gallons per minute
  • Electronic ignition and patented burner design
  • Exclusive safety and precision controls
  • Built in freeze protection
  • Direct vent, vertically or horizontally with PVC, CPVC or ABS-DWV
  • Concentric and twin pipe venting options
  • Can be used in solar thermal, recirculation, and space heating applications
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models

Warranty

15 year limited warranty on heat exchanger; 3 year warranty if used in direct recirculating applications

15 year warranty on heat exchanger if used if recirculated through a storage tank such as the Ariston mini-tank

5 year warranty on all other parts
Bosch Warranty Details

Model MBH Capacity Application Residential Water Heater Mississauga
  MIN MAX GPM  
C 1210 ES 25,000 225,000 0.5-12.1 Residential or Commercial
 

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Therm 830 ES

Eligible for up to $300 Federal Tax Credit

The 830 ES is another new model from Bosch that offers advanced software, safety and precision controls but requires only 175,000 BTU/Hr input. The 830 ES is ideal for busy households yet is also designed to support Intelligent Cascading, up to 24 units for larger homes.

  • 83%+ thermal efficiency
  • 175,000 BTU maximum input
  • 8.3 gallons per minute capacity at 35F degree rise
  • Minimum activation flow rate of 0.5 gallons per minute
  • Electronic ignition and patented burner design
  • Exclusive safety and precision controls
  • Built in freeze protection
  • Vents vertically or horizontally with 3" or 4" stainless steel
  • Can be used in solar thermal, recirculation, and space heating applications
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models
  • Optional pipe cover and wireless remote control available
  • Mobile home certified

15 year limited warranty on heat exchanger; 3 year warranty if used in direct re-circulating applications

15 year warranty on heat exchanger if used if re-circulated through a storage tank such as the Ariston mini-tank

5 year warranty on all other parts

Model MBH Capacity Application Residential Water Heater Toronto GTA Mississauga
  MIN MAX GPM  
830 ES 19,900 175,000 0.5-8.3 Residential or Commercial
 

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Therm 660 EF

Eligible for up to $1500 Federal Tax Credit (30% of purchase price and residential installation)

The Therm 660 EF is compact enough to install virtually anywhere. But don't let the size fool you. This model is loaded with features including freeze protection and built-in high temperature capability (160°F).

  • Super compact 14" x 20½" x 7" size
  • 83%+ thermal efficiency
  • 140,000 BTU maximum input
  • 6.6 gallons per minute capacity at 35F degree rise
  • Minimum activation flow rate of 0.5 gallons per minute
  • Electronic ignition
  • Built in freeze protection
  • Vents vertically or horizontally with 3" or 4" stainless steel
  • Can be used in recirculation and space heating applications
  • Backed with 15-year warranty
  • Available in NG and LP models

Warranty

15 year limited warranty on heat exchanger; 3 year warranty if used in direct re-circulating applications

15 year warranty on heat exchanger if used if re-circulated through a storage tank such as the Ariston mini-tank

5 year warranty on all other parts

Model MBH Capacity Application Residential Water Heater
  MIN MAX GPM  
660EF 20,000 140,000 0.5-6.6 Residential or Commercial
 

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Therm 520 HN

The Therm 520 HN incorporates an evolutionary hydro-power ignition system which allows this tankless water heater to work without a standing pilot, grid connection or battery! A small turbine inside the water heater uses the energy from the flowing water to ignite the burner. The modulating gas valve then maintains a constant temperature at varying flow rates. This innovative technology, patented by Bosch, makes this an ideal product for installations without access to electricity or regions prone to inclement weather and power outages.

Features & Benefits

  • Patented Hydro-power ignition requires no electricity
  • 80% thermal efficiency
  • 117,000 BTU maximum input
  • 5.3 gallons per minute capacity at 35F degree rise
  • Endless hot water for up to 2 applications at a time
  • Minimum activation flow rate of 0.6 gallons per minute
  • High to low temperature control
  • Vents with galvanized B vent – natural draft
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models

Warranty

15 year limited warranty on heat exchanger
2 year warranty on all other parts

Model Max-Min MBH Capacity GPM Application Bosch water heater
520 HN 20-117 0.6-6.6 Residential or Commercial
 

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Therm 520 PN

This Bosch Therm 520 PN model offer Piezo push-button ignition and utilizes a modulating gas valve to ensure a constant temperature at varying flow rates. The 520 PN is the perfect tank less solution for smaller families and households that only use no more than two hot water applications at a time.

While it provides endless hot water, it saves money because it only heats water when you need hot water.

Features & Benefits

  • Piezo ignition system requires no electrical connection
  • 78%+ thermal efficiency
  • 117,000 BTU maximum input
  • 5.3 gallons per minute capacity at 35F degree rise
  • Endless hot water for up to 2 applications at a time
  • Minimum activation flow rate of 0.5 gallons per minute
  • High to low temperature control
  • Vents with galvanized B vent – natural draft
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models

Warranty

15 year limited warranty on heat exchanger
2 year warranty on all other parts

Model MBH Capacity Application
  MIN MAX GPM  
520 PN 30,725 117,000 0.6-6.6 Residential or Commercial
 

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Therm 330 PN

The Bosch Therm 330 PN model offers Piezo push-button ignition and utilizes a modulating gas valve to ensure a constant temperature at varying flow rates.

Features & Benefits

  • Piezo ignition system requires no electrical connection
  • 78%+ thermal efficiency
  • 75,000 BTU maximum input
  • 3.3 gallons per minute capacity at 35F degree rise
  • Endless hot water for 1 application at a time
  • Minimum activation flow rate of 0.5 gallons per minute
  • High to low temperature control
  • Vents with galvanized B vent – natural draft
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models

Warranty

15 year limited warranty on heat exchanger
2 year warranty on all other parts

Model MBH Capacity Application
  MIN MAX GPM  
330 PN 30,735 75,000 0.6-3.3 Residential or Commercial
 

Download Specs (PDF)