Bosch Tankless C1050ES

Bosch Therm C1050ES 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 gas 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 tankless Therm 1050 is a low NOx compliant system; NOx has been identified as a main greenhouse gas in addition to significantly increasing acid rain. Meeting new strict standards provides greater energy savings as well as contributing to cleaner air and a better quality of life.

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 Sales Toronto

  • Up to 98% thermal efficiency
  • 199,000 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


DimensionsBosch Therm
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 – 199,000 BTU
Propane: 19,000 – 199,000 BTU

Thermal Efficiency
Natural Gas: 94%
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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