Energy Savings Chart
Energy Savings Chart
 
   Natural Gas

Model/Product Energy Factor Annual Cost
to Operate*		 Annual
Savings¹		 Annual
Savings²
635 ES/ESO 0.80 $250 $110 $151
425 HN/HNO 0.80 $266 $95 $135
425 EF 0.78 $273 $88 $129
40-gallon tank 0.59 $361
75-gallon tank 0.53 $410

   Liquid Propane

Model/Product Energy Factor Annual Cost
to Operate*		 Annual
Savings¹		 Annual
Savings²
635 ES/ESO 0.80 $355 $163 $221
425 HN/HNO 0.84 $364 $154 $213
425 EF 0.81 $377 $141 $199
40-gallon tank 0.59 $518
75-gallon tank 0.53 $577

   

*The above charts represent approximate energy savings figures based on U.S. Dept. of Energy test method for water heaters. The energy costs used are the 2006 averages as published by DOE - $1.42/therm for natural gas and $1.95/gallon for propane.

Annual Savings¹ - Compared to a new 40-gallon tank water heater of the most popular model.
Annual Savings² -Compared to a new 75-gallon tank water heater of the most popular model.

Bosch - GWH 635ESO
   
GWH 635 ESO
Technical Support
 
Note: Specifications and product information subject to change without notice.