Bosch Greentherm C 1050 ES LP Tankless Water Heater, Liquid Propane 199,000 BTU Max Condensing - Indoor or Outdoor, 10.5 GPM

SKU: 826550
Brand: Bosch Model: Greentherm C 1050 ES LP Condition: New

Bosch Greentherm C 1050 ES LP Gas Tankless Water Heaters

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Bosch has been the premier water heater manufacturer with their trusted name in the business for over 125 years. With their new exclusive heat burner design, Bosch is the innovator of the industry-leading water heaters with unsurpassed efficiency and durability. With 100% serviceable parts and easy access, Bosch has allowed for their customers to use their water heaters for many lifetimes over.

The Bosch C 1050 ES LP features 199,000 BTU/hour max with a 19,900 BTU/hour minimum water heating element with a 92% thermal efficiency. The Bosch C 1050 ES LP utilizes liquid petroleum (propane) as an energy source, reducing high electrical costs yielded from conventional water heaters. With such a great heating element, the C 1050 ES LP still maintains great efficiency with an energy factor of 0.92. This allows for whole-house treatment as well as a constant flow of heated water at a low cost to your application. With the intelligent cascading feature, this unit can be connected to up to 24 units for commercial applications such as large buildings and warehouses. This unit can also be paired with a high temperature kit for commercial applications that require temperatures of up to 184° F. With a 10.5 gallon per minute rise at 35° F and trusted to work in altitudes of up to 8,000 ft., the Bosch C1050ES LP can be the perfect water for your commercial or residential application.

Suitable for indoor and outdoor (with kit) applications, the Bosch C 1050 ES LP can be used in almost any platform. You may also join it with solar thermal devices or recirculation applications. With a life expectancy of over 20 years, Bosch ensures that your family can enjoy continuous hot water for years to come with the industry-leading 15-year manufacturer’s warranty.

Additional Information:


• Suitable for indoor and outdoor installations
• 92% thermal efficiency
• 199,000 BTU maximum input
• 10.5 gallons per minute capacity at 35F degree rise
• Minimum activation flow rate of 0.65 gallons per minute
• Electronic ignition and patented burner design
• Exclusive safety and precision controls
• Direct vent, vertically or horizontally with Stainless Steel, PVC, CPVC or ABS-DWV
• Concentric and twin pipe venting options
• Can be used in solar thermal, recirculation applications
• Built for durability and serviceability with 1-year on labor, 5 years on heat exchanger and 5 years on parts warranties and 20+ year life expectancy


• Condensing/Non-Condensing: Condensing
• Application: Residential or Commercial
• Max Input (BTU): 199,000
• Min Input (BTU): 19,900
• Capacity at 35°F Rise (gpm): 10.5
• Capacity at 55°F Rise (gpm): 6.7
• Intelligent Cascading: Yes
• Min Flow Rate: 0.50 gpm
• Temp Range (°F): 100 - 140
• Temp Stability (°F): +/- 2
• Default Temp (°F): 120
• Energy Factor: .91
• Thermal Efficiency: 92%
• Installation Options: Indoor
• Dimensions (w x h x d): 17.875" x 30 1/2" x 11 1/4"
• Weight (lbs.): 74
• Inlet Connection: 3/4" NPT
• Outlet Connection: 3/4" NPT
• Gas Connection: 3/4" NPT
• Max Water Pressure: 150 psi
• Min Water Pressure: 30 psi
• Condensing Heat Exchanger: Aluminum
• Venting Options: PVC, CPVC, ABS, Cat III, Stainless Steel
• Vent Maximum Run: 63'
• Energy Star Rated: Yes

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