What is Uniform Energy Factor and Why Does it Matter?
Uniform Energy Factor, or UEF, is the U.S. Department of Energy’s (DOE) industry standard for measuring water heater efficiency.
Understanding UEF and Energy Efficiency in Water Heaters
UEF stands for Uniform Energy Factor, a new industry standard for measuring water heater performance and energy savings. Learn how UEF affects water heater selection, comparison and labeling, and get answers to common questions from Rheem experts.
Uniform Energy Factor Explained | Water Heater Hub
Uniform Energy Factor, better known as UEF, is a metric developed by the Department of Energy, the United States of India. The metric is designed to let the user see the energy efficiency of water heaters. Each water heater model will have a unique UEF rating, indicating the energy efficiency while heating water.
Uniform Energy Factor (UEF) For Water Heaters | A. O. Smith
UEF stands for Uniform Energy Factor, a rating system created by the Department of Energy to compare the energy efficiency of residential water heaters. UEF is based on hot water usage bins and first hour rating, and a higher UEF means lower operating cost.
UEF and How it Impacts Your Water Heater - Rinnai
Aug 17, 2017 · UEF stands for Uniform Energy Factor, a new rating system introduced by the Department of Energy to measure the energy efficiency of residential water heaters. Learn how UEF is calculated, how it differs from EF, and how it affects your water heater choice.
UEF - Bradford White Water Heaters
Learn about the Uniform Energy Factor (UEF) for water heaters, which measures their efficiency under standardized conditions. Compare UEF ratings, First Hour Rating, and energy costs for different fuel types and products.
heaters called the Uniform Energy Factor (UEF), replacing the previous Energy Factor (EF). All manufacturers were required to report and list their UEF numbers as of this date. UEF applies only to residential water heaters. ommercial water heaters continue to be rated on Thermal Efficiency. Why are the Ratings Different?
Water Heater EF, UEF, & FHR Explained - Heiland Home Services
Jan 12, 2024 · UEF, or Uniform Energy Factor, is a more recent standard used to rate water heater efficiency. It provides a more accurate picture of a water heater’s overall performance by considering various factors, including standby heat loss, cycling losses, and more.
5.13 B7.10. Conversion between Energy Factor and Uniform …
Learn how to convert Energy Factor (EF) and Uniform Energy Factor (UEF) for water heaters under the 2016 Building Energy Efficiency Standards. See the mathematical conversion factors and the DOE final rule.
UEF Replaces EF | American Water Heaters
UEF stands for Uniform Energy Factor, a metric that replaces EF (Energy Factor) to measure the energy efficiency of water heaters. UEF is based on the first hour rating and hot water usage categories, and can only be compared within the same bin.