Bosch Therm 940 ESO NG 9.4 GPM 199000 BTU Outdoor Natural Gas

SKU: 7703311071
List price: $1,311.00

Bosch tankless therm 940 eso water heaterOUTDOOR tankless water heater is equipped with everything the plumbing contractor needs for outdoor installation including a digital control panel cover. An optional recess box is available which allows the entire unit to be recessed flush with your home?s exterior. The rugged steel recess box accommodates a lock and can be painted for a customized appearance.

bosch 940 eso

At 199,000 maximum BTUs the Bosch 940 ESO is our highest capacity non-condensing tankless water heater. The Bosch Therm 940 ES was designed to meet the demands of busy households and offers the premium features you expect from Bosch. This model can be installed almost anywhere thanks to its sealed combustion and dual-fan technology.

The Bosch Therm 940 ESO comes complete with the Bosch BTOK outdoor vent cap and built-in freeze protection allowing this heater to be installed outdoors in approved locations that experience occassional overnight freezing.

The Bosch Therm 940EOS is the direct replacement for the Bosch GWH 715 ES/BTOK and the Bosch AquaStar 2700ES/AQOK.

  • Highest capacity non-condensing model
  • 83%+ thermal efficiency
  • 199,000 BTU maximum input
  • 9.4 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
  • Vents vertically or horizontally with 3? or 4? stainless steel
  • Can be used in solar thermal, recirculation applications
  • Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
  • Available in NG and LP models
  • Also available as an outdoor model, 940 EFO
  • Mobile home certified


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Therm 940 ESO Specifications
Condensing/Non-Condensing Non-Condensing
Application Residential or Commercial
Max Input (BTU) 199,000
Min Input (BTU) 19,900
Capacity at 35F Rise (gpm) 8.3
Capacity at 55F Rise (gpm) 5.3
Intelligent Cascading No
Min Flow Rate 0.5 gpm
Temp Range (F) 100 - 140
Temp Stability (F) +/- 2
Default Temp (F) 120
Energy Factor .83
Thermal Efficiency 83%+
Installation Options Outdoor
Dimensions (w x h x d) 18" x 30" x 11"
Weight (lbs.) 67
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
Min NG Presure 3.5" WC
Condensing Heat Exchanger n/a
Venting Options n/a
Vent Maximun Run n/a
Energy Star Rated Yes
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