How is energy factor calculated?
Energy Factor (EF) is a measurement that’s used to describe theenergy-efficiency of a water heater. To calculate a water heater’s energy factor, you take the amount of energy the water heater puts to use and divide it by the total amount of energy that goes into powering the unit.
What does .62 Energy Factor mean?
We recommend gas water heaters with an Energy Factor of . 62 or greater. This represents a 10 percent savings compared to a standard efficiency gas water heater.
What is a UEF rating?
Uniform Energy Factor (UEF) rating A water heater’s UEF rating is a measure of its energy efficiency, with higher numbers denoting more efficient units. The UEF calculation is based off of how much energy the water heater uses and how much energy is used to power the water heater itself.
What is an energy factor rating?
An energy factor is a metric used in the United States to compare the energy conversion efficiency of residential appliances and equipment. The energy factor is currently used for rating the efficiency of water heaters, dishwashers, clothes washers, and clothes dryers.
What does L kWh mean?
L/kWh
Efficiency of dehumidifiers is rated in terms of energy factor (EF), the volume of water removed from the air per unit of energy consumed, measured in liters per kilowatt-hour (L/kWh).
What is EEF in refrigerator?
What is the EEF (Energy Efficiency Ratio) in refrigerators? It tells you how efficiently a refrigerator uses its power to cool its rated storage volume. A high EEF number means that that particular model is more energy-efficient, and therefore has a lower operating cost.
What is a good energy rating for a hot water heater?
Look for the “thermal efficiency” rating rather than EF, with values of 0.90 and above. The minimum efficiency of electric resistance storage water heaters is about 0.90 (depending on tank volume), and the best available are 0.95 EF.
How do I find my UEF rating?
UEF ratings are determined by assigning water heaters into one of four different categories of hot water usage and then evaluating their performance based on that usage. These categories are called bins. A water heater is assigned a UEF within its bin based upon its first hour rating.
Is high or low UEF better?
Uniform Energy Factor (UEF): The newest measure of water heater overall efficiency. The higher the UEF value is, the more efficient the water heater.
Is energy factor the same as efficiency?
A water heater’s energy efficiency is determined by the energy factor (EF), which is based on the amount of hot water produced per unit of fuel consumed over a typical day. The higher the energy factor, the more efficient the water heater.