Water Heater Ratings Energy Star

The tank must hold a maximum of 1 gallon of water per 4 000 btu per hour of input.

Water heater ratings energy star.

Efficiency and performance for energy star certified water heaters may be evaluated using two different methods. The input must be between 50 000 200 000 btu per hour. They heat your water just like standard models but with much less energy saving you up to 3500 over a unit s lifetime. A water heater can be certified as energy star by meeting energy factor ef standby loss and or thermal efficiency criteria or by meeting uniform energy factor uef criteria.

Energy star certifiedwater heaters. Water heaters are the second highest source of energy usage in the home. The energy star water heater with heat pump has an energy factor of 2 5 250 more energy efficient the doe calculator won t take a number above 95 so divide the standard standard electric water heater s annual operating cost by 250 use the key. They use less energy than standard models saving homeowners money on their utility bills while helping protect the climate.

Water temperature must be controlled up to 180 f. Energy star certified water heaters are an easy choice for energy savings performance and reliability. Although these performance metrics are different certification as energy star by either method requires equivalent efficiency. Smith signature premier 50 gallon tall 10 year limited 4500 watt double element electric water heater with hybrid heat pump item 816193 model hp10 50h45dv.