Bosch Tankless C950ES

Bosch Therm C950ES Tankless Water Heater

This Bosch Tankless is a high performance, fully condensing system available from Bosch within the Greater Toronto Area. A condensing tankless captures heat from the exhaust gases and uses it to preheat the incoming cold water through the use of a secondary heat exchanger. This nets around a 12% efficiency increase further reducing emissions.

The Bosch Therm tankless is a great system to be used in conjunction with a solar thermal application.  Toronto and surrounding areas are very well suited for solar thermal applications.  Even in winter you would be surprised as to how hot solar energy is able to preheat incoming water temperatures. The preheated water is then assessed by the Bosch tankless and sufficient energy is then used to further heat the water to your desired temperature.

Bosch also utilizes an exclusive burner design which they have patented. Their system utilizes a modulating vertical burner that prevents hot spots reducing the chance of a heat exchanger crack. The even burn associated with this design also reduces the buildup of scale and deposits within the heat exchanger. Scale can significantly reduce the efficiency of both a tankless and a conventional water heater.

Bosch Tankless FeaturesBosch Therm

  • 93% and better thermal efficiency
  • 175,000 BTU maximum input
  • Minimum activation flow rate of 0.5 gallons per minute
  • 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 Natural Gas and Propane models


Width: 17 7/8 Inches
Height: 30 1/2 Inches
Depth: 11 1/4 Inches

74 Pounds

Approved Gas Types
Natural Gas or Propane

Minimum/Maximum Gas Rate (Input BTUs)
Natural Gas: 19,900 – 1175,000 BTU
Propane: 19,000 – 175,000 BTU

Thermal Efficiency
Natural Gas: 93%
Propane: 94%

AC 120 Volts, 60 Hz

Gas Connection
Gas Supply: ¾ Inch MNPT
Cold Water Inlet: ¾ Inch MNPT
Hot Water Outlet: ¾ Inch MNPT

Interested In A Bosch Tankless?

We service, sell, and install Bosch tankless water heater throughout Toronto, the GTA, and North through to Barrie ( and all the towns in between).

Call — (647) 925-1930

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