95 Energy Factor Water Heater

Based on the bin in which a water heater is categorized a pre determined amount of hot water usage is applied to that water heater to determine the annual cost of operation.

95 energy factor water heater.

2016 manufacturer s certification statement high efficiency water heater models. For example a high bin water heater with a uef of 0 95 does not perform exactly the same as that of a low bin water heater with a uef of 0 95. Due to inconsistent unreliable interpretations of high efficiency ef ratings across national brands all water heating manufactururers are now required to comply with the new doe testing procedures and rating standards. Ef is determined by the department of energy s test method outlined in the 10 cfr parts 200 to 499 edition revised as of january 1 2014.

Gas powered water heaters typically have an energy factor between 0 5 and 0 7. Expressed as a decimal the uniform energy factor is determined by running a department of energy specified simulated use test sut. This means that between 75 and 95 percent of the energy used to heat the water ends up being delivered to your taps as usable hot water. The uniform energy factor.

Smith high efficiency water heaters have been recognized as energy star water heaters. This will give you the annual operating cost for a heat pump water heater. The higher the ef value is the more efficient the water heater. 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.

An older measure of water heater overall efficiency that is being phased out due to new test methods for water heaters. The best electric resistance storage water heaters achieve an energy factor of 0 95 and the best electric resistance tankless water heaters achieve an energy factor of 0 99. Electric water heaters typically have energy factors between 0 75 and 0 95. The energy factor ef indicates a water heater s overall energy efficiency based on the amount of hot water produced per unit of fuel consumed over a typical day.

The uniform energy factor for residential and certain commercial water heaters refers to its efficiency when run under standardized conditions for a 24 hour period. The typical energy factor for a gas water heater is between 0 5 and 0 7. Use the energy factor to determine the energy efficiency of a storage tankless or demand type water heater or heat pump water heater. The perfect electric resistance water heater could not exceed an energy factor of 1 0 due to this technology s physical limitations.

These are ideal hot water solutions for the homeowner looking to go green and save green. As of september 1 2010 a water heater needs to have an energy factor of 0 67 or higher in order to qualify. We are pleased to announce that the following a. What s a good water heater energy factor.