uniform energy factor

Definition of Energy Factor - Furnace Compare

Determining Energy Factor. A water heater's energy factor (EF) is a measure of useful energy coming out of the water heater, divided by the amount of energy going in. The energy factor is based on the amount of hot water produced per unit of fuel consumed per day. Electric water heaters typically have energy factors between 0.75 and 0.95.

Solar Uniform Energy Factor Specification - Solar Rating ...

The Solar Uniform Energy Factor (SUEF) Specification for domestic solar water heaters was created in late 2020 by a diverse group of stakeholders from the solar thermal industry. The specification defines the conditions, assumptions, and methodologies to be used to determine a Uniform Energy Factor for domestic water heaters directly utilizing solar energy.

Water Heaters | NJ OCE Web Site

<2 gallons (storage capacity) & Uniform Energy Factor (UEF) 0.90, or greater (effective August 1, 2019) $300: Electric Heat Pump Water Heater: Uniform Energy Factor (UEF) 2.0, or greater: $750: Boiler and Water Heater Combination Rebate: Qualifying boiler and water heating as noted below: Integrated water heating and boiler unit (Combi Boilers)

Understanding UEF and Energy Efficiency in Water Heaters ...

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). The new UEF rating method improves the industry's ability to: Define consistent standards for measuring energy efficiency performance; Simplify the water heater selection ...

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.

2020 ICC 900/ SRCC 300 SOLAR THERMAL SYSTEM STANDARD | …

Solar Uniform Energy Factor ratings apply to water heating systems utilizing solar energy as a source of energy in conjunction with a fueled backup (auxiliary) energy source to heat water to meet a hot water load. Auxiliary water heaters used as part of a solar water heating system shall be fueled by natural gas, propane, fuel oil or electricity.

What is the uniform energy factor on a water heater ...

Uniform Energy Factor (UEF) is a new metric for determining the energy efficiency of a water heater. UEF's are determined by the estimated usage of a water heater: When selecting the most efficient unit for you, consider the fuel type and the capacity needs for your home.

NR98 OD | Noritz

GQ-2857WX US NG GQ-2857WX US LP .82 Uniform Energy Factor Minumum 16,000 to Max 199,900 BTUh 0.5 to 9.

Quickfacts | NPE-240S2 | Products | Navien Inc.

Energy star certified: Yes: Efficiency Ratings* Uniform Energy Factor (UEF) 0.96: MAX GPM (67°F Rise) 5.8 GPM (22 l/m) Annual Energy Consumption* (Residential) Natural gas (Therms/Year) 177.0: Propane (Gallons/Year) 194 gal (734.4 l) Natural Gas Estimated Operating Cost** $193: Propane Estimated Operating Cost** $468

Tankless Condensing High Efficiency Water Heaters with ...

ENERGY STAR® qualified, has a minimum uniform energy factor of 0.93, meets the energy efficiency requirements of the U. S. Department of Energy and ASHRAE 90.1 and complies with SCAQMD Rule 1146.2 and other air quality districts with similar requirements for low NOx emissions of …

What is uniform energy factor for hot water heaters?

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. Expressed as a decimal, the Uniform Energy Factor is determined by running a Department of Energy specified simulated use test (SUT).

A.O. Smith Signature 300 40-Gallon Tall 40000-BTU Natural ...

This model is ENERGY STAR® certified and operates at a 0.64 Uniform Energy Factor (UEF) which can reduce your energy consumption compared to less efficient models. Not sure if this is the right water heater for you? Use our product selector tool to see if this model is the right fit for your hot water needs.

Water Heaters - NYSERDA

Below are the five primary types of water heaters sold today. If you are replacing your water heater, look for ENERGY STAR® certified water heaters, which have a higher Uniform Energy Factor (UEF) than standard water heaters. The higher the UEF, the more efficient the water heater will be.

Water Heater Energy Factor: Is Higher Better in Oklahoma?

Water Heater Energy Factor: Why Higher Does Not Mean Better in Oklahoma. August 27, 2014. Energy factor (EF) rating is like the Miles Per Gallon (MPG) of water heaters. It determines how efficiently the water heater uses its fuel source. For example, these are the typical EFs of gas and electric water heaters: Electric water heaters: 0.75 to 0.95.

Water Heater Key Product Criteria | Products | ENERGY STAR

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. Expressed as a decimal, the Uniform Energy Factor is determined by running a Department of Energy specified simulated use test …

ProLine® 50-Gallon Gas Water Heater

Featuring a 50-gallon (nominal) tank and a 40,000 BTU gas burner, the GS6-50-BRT Atmospheric Vent delivers a first hour rating of 81 gallons and a recovery rate of 41 gallons per hour. With an 0.62 Uniform Energy Factor, this water heater is not ENERGY STAR® qualified.

RUR199iN | Rinnai

4.1/5 stars from 2659 reviews. Enjoy an endless supply of hot water with the SENSEI™ RUR199iN Super High Efficiency Plus condensing tankless water heater from Rinnai. Only the size of a small suitcase, the natural gas RUR199iN model is compact, easy-to-install and perfect for indoor locations. Energy Factor: 0.96. Uniform Energy Factor: 0.93.

D S P S -T W HEATERS USING RATINGS DATA PRODUCED …

metric, called the Uniform Energy Factor (UEF) (U.S. Department of Energy, 2014). The rated efficiencies under the new test procedure cannot be directly compared to the EF because of the differences in the test procedures. The new test procedure uses different hot water draw profiles and a different water heater setpoint temperature.

10 CFR Appendix E to Subpart B of Part 430 - Uniform Test ...

UEF = the uniform energy factor as computed in accordance with section 6.4.3 of this appendix 365 = the number of days in a year. V = the volume of hot water drawn during the applicable draw pattern, gallons = 10 for the very-small-usage draw pattern

Performance Plus 40 Gal. Tall 9-Year 4500/4500-Watt ...

0.93 uniform energy factor signifies an energy efficient water heater Dual 4500-Watt heating elements Automatic thermostat keeps water at your desired temperature

What is an Energy Factor? | Bradford White

Energy Factor is a former metric used to measure the efficiency of water heaters overall. This has been replaced by the more updated and accurate Uniform Energy Factor (UEF). For UEF, the higher the number the more efficient the water heater. Learn more here.

UEF Replaces EF - State Water Heaters

The Uniform Energy Factor (UEF) is the DOE's newly developed metric for communicating the energy efficiency of water heaters. Previously, you may have seen efficiency measured by Energy Factor (EF). UEF replaces this metric. UEF ratings are determined by assigning water heaters into one of four different categories of hot water usage and then ...

Uniform Energy Factor - How is Uniform Energy Factor ...

Acronym Definition; UEF: University of Eastern Finland (est. 2010; Finland) UEF: United Earth Federation (Gundam Wing anime) UEF: Union of European Federalists (political group; B

Understanding Energy Efficiency in Water Heaters - Ruud

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). The new UEF rating method improves the industry's ability to: More accurately reflect real-world scenarios that impact energy efficiency ratings.

UEF Replaces EF | American Water Heaters

The Uniform Energy Factor (UEF) is the DOE's newly developed metric for communicating the energy efficiency of water heaters. Previously, you may have seen efficiency measured by Energy Factor (EF). UEF replaces this metric. UEF ratings are determined by assigning water heaters into one of four different categories of hot water usage and then ...

Department of Energy. Though it is not intended or ...

more recently adopted uniform energy factor test procedure. As required by the Energy Policy and Conservation Act of 1975 (EPCA), as amended, DOE initially presented proposals for establishing a mathematical conversion factor in a notice of proposed rulemaking (NOPR) published on April 14, 2015 (April 2015 NOPR).

High Efficiency Water Heaters | Choose a ENERGY STAR for ...

Each A. O. Smith water heater model listed is a natural gas, propane, or oil water heater that has a Uniform Energy Factor of at least 0.82 or has a thermal efficiency of at least 90%. Accordingly, each is Qualified Energy Property and, when placed into service on or after January 1, 2017 and on or before December 31, 2021, each qualifies for ...