Water Heater Energy Factor List

365 x 12 03 2 0 x 0 0842 185. The new uef rating method improves the industry s ability to. Electric water heaters typically have energy factors between 0 75 and 0 95.

what do battle ropes do for you what are camper interior walls made of west elm mid century wall desk warm springs rv resort waterproof wallpaper for bathrooms uk what to clean kitchen walls with before painting what is the best wall furnace water jet loom machine price in india

Water Heaters Get A New Performance Standard Greenbuildingadvisor

Uef

Water Heater First Hour Rating Explained Best Water Heater Reviews

Getting The Right Binformation On Uef Phcppros

Business Energy Advisor Tankless Water Heaters

Appliance Rebates

The higher the ef value is the more efficient the water heater.

Water heater energy factor list.

Simplify the water heater selection. 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. As of september 1 2010 a water heater needs to have an energy factor of 0 67 or higher in order to qualify for the energy star label. Define consistent standards for measuring energy efficiency performance.

An older measure of water heater overall efficiency that is being phased out due to new test methods for water heaters. Expressed as a decimal the uniform energy factor is determined by running a department of energy specified simulated use test sut. 365 days year x 12 03 kwh day ef x fuel cost kwh annual cost of operation. A heat pump water heater with an ef of 2 0 and an electricity cost of 0 0842 kwh.

Beginning june 12 2017 ef ratings will be replaced with the new industry standard for measuring energy efficiency in water heaters called uniform energy factor uef. You need to know or convert the unit cost of electricity by kilowatt hour kwh. For gas condensing water heaters the energy factor must be 0 8 or higher to qualify for the energy star label. 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.

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. The uniform energy factor. It s important to note that energy factors can vary significantly depending on their fuel source.