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Update on Appliance Efficiency Standards
May 22, 2012
This 25-minute video highlights some of the key findings from a report recently released by the American Council for an Energy-Efficient Economy and the Appliance Standards Awareness Project entitled "The Efficiency Boom: Cashing In on the Savings from Appliance Standards."
Content type: Tech Brief | Document ID: TAS-TB-3 | Author: Katie Elliott
Heat Pump Water Heaters: They’re Baaack!
January 26, 2012
Residential heat pump water heaters are in the midst of a significant resurgence and have the potential to save consumers substantial amounts of energy if they are installed and used correctly.
Content type: Research Brief | Document ID: TAS-RB-53 | Author: Essie Snell
Reducing Swimming Pool Heat Loss
June 24, 2011
What are the primary energy losses from swimming pools? Do you have any recommendations for eliminating those losses?
Content type: Ask E Source | Document ID: TAS-AskES-32 | Author: Leland Keller
New Energy Efficient Infrared Drying and Blanching Technologies for Fruits and Vegetables
March 1, 2011
The proposed research is to develop and demonstrate an infrared dry‐blanching and drying system for fruits or vegetables that results in high quality products. The sequential infrared and freeze‐drying method and infrared dry‐blanching and dehydration method are discussed.
Content type: Fact Sheet | Document ID: CEC-FS-5 | Author: California Energy Commission/Public Interest Energy Research
Saving Energy in Commercial Dishwashers
June 18, 2003 | Updated: January 20, 2011
Do you know of any energy-saving opportunities for commercial dishwashers—specifically for hotels?
Content type: Ask E Source | Document ID: TAS-TN-6-03 | Author: Peter Criscione
Water Heater Lifetime
March 3, 2004 | Updated: January 20, 2011
How does the lifetime of conventional water heaters compare with that of tankless water heaters for residential use?
Content type: Ask E Source | Document ID: TAS-TN-2-04 | Author: Peter Criscione
Low-Flow Prerinse Spray Valves
November 30, 2005 | Updated: January 20, 2011
What is a low-flow prerinse spray valve, and what kind of savings does it achieve?
Content type: Ask E Source | Document ID: TAS-TN-11-05 | Author: Peter Criscione
Energy Factors for Demand Water Heaters
July 3, 2002 | Updated: September 30, 2010
Where can I find energy factors (EFs) for demand water heaters (also known as instantaneous or tankless water heaters)? The Gas Appliance Manufacturers Association provides EFs for virtually all residential tank water heaters on the market, but not for demand heaters.
Content type: Ask E Source | Document ID: TAS-TN-7-02 | Author: Peter Criscione
Pool Heaters (Residential)
September 16, 2010
In this directory we provide concise, printable U.S. Department of Energy (DOE) standards data for all covered equipment types. This includes what types of products the DOE covers, what the standard is, and how to calculate the standard.
Content type: Equipment Efficiency Standards Directory
Residential Tankless Water Heater Applications
November 20, 2003 | Updated: September 15, 2010
What residential applications are best suited for electric tankless water heaters?
Content type: Ask E Source | Document ID: TAS-TN-10-03 | Author: Peter Criscione
Watts Up at the Water Cooler?
March 1, 2010
How much energy do water fountains and water coolers use, and how can it be reduced?
Content type: Ask E Source | Document ID: TAS-TN-3-10c | Author: Kitty Stevenson
Pool Pump Savings Opportunities
November 5, 2009
What are the opportunities for saving energy in pool pumps?
Content type: Ask E Source | Document ID: TAS-AskES-5 | Author: Dan Greenberg
Drainwater Heat Recovery Device Savings
October 1, 2009
How much energy do drainwater heat recovery devices save?
Content type: Ask E Source | Document ID: TAS-TN-10-09d | Author: Peter Criscione
Solar Thermal Programs Are Hot!
July 28, 2009
Who’s getting into solar thermal energy, and why? What incentives are helping residential customers invest in solar hot water? What are the elements of successful utility programs for solar hot water?
Content type: Ask E Source | Document ID: EDRP-AskES-13 | Author: Dulcey Simpkins
Savings from Removing Sediment Buildup in Water Heaters
June 25, 2009
How much energy can be saved by removing sediment buildup in tank-type water heaters?
Content type: Ask E Source | Document ID: TAS-TN-7-09c | Author: John Sustar
Heat Pump Water Heaters in Cold Climates
June 1, 2009
Is it cost-effective to install residential heat pump water heaters (HPWHs) in heating-dominated climates, where the HPWH is withdrawing heat from the living space?
Content type: Ask E Source | Document ID: TAS-TN-6-09e | Author: John Sustar
Shutting Off Water Heaters and Legionnaires’ Disease
April 22, 2009
Are there health concerns associated with turning off domestic hot water tanks in buildings that are periodically unoccupied, such as on weekends and, in the case of schools, during vacations?
Content type: Ask E Source | Document ID: TAS-TN-5-09d | Author: Mary Horsey
Thermally Driven Heat Pump Runs Hot, Cold for Food, Beverage Industries
November 1, 2007
The food and beverage industry uses a great deal of energy, costing plants in the U.S. an average of $643,000 per year, mostly for heating and cooling. These plants typically use gas-fired water heaters or boilers to produce hot water and electrically driven mechanical refrigeration systems for cooling. ...
Content type: Tech Brief | Document ID: CEC-TB-28 | Author: Kristin Kamm
Status of Heat Pump Water Heaters
February 28, 2007
What's the status of heat pump water heater (HPWH) products here and abroad? Are any utilities in the U.S. still operating successful HPWH programs?
Content type: Ask E Source | Document ID: TAS-TN-2-07 | Author: Peter Criscione
Innovation in the Residential Water Heating Sector Bubbles Over: Gas Tankless and Condensing Units Improving but Still Costly
November 1, 2006
The standard for the efficiency of residential natural gas water heaters is locked in at just about the highest level for which tank-type water heaters are available. Therefore, pushing into higher efficiencies will require a change from conventional tank-type heaters. Two of the alternatives currently ...
Content type: Core Report | Document ID: ER-06-12 | Author: Kristin Kamm
The E-Tech Residential Heat Pump Water Heater: Worth a Closer Look
November 1, 1996
Residential heat pump water heaters (HPWHs) can cut electric water heating bills in half or more. Although these devices have a reputation for high price and poor performance, one manufacturer has been studiously refining a lower cost residential-sized unit.
Content type: Core Report, Research | Document ID: PP-96-4 | Author: Paul Komor, Ph.D.
Heat Pump Water Heaters: A Technology Assessment and Market Survey
December 1, 1994
Heat pump water heaters (HPWHs) are two to four times as efficient as electric resistance water heaters and provide space cooling as well as water heating. They also cost considerably more, consume more space, and may require more maintenance.
Content type: Core Report, Research | Document ID: TU-94-9 | Author: Ned Nisson, Michael Shepard
Hot Plate Provides "Free" Water Heating
December 1, 1993
The Hot PlateTM (Figure 1) is a unique heat recovery unit that uses waste heat from residential and small commercial air-conditioning and refrigeration equipment to provide "free" hot water. It also can reduce summer peak load by displacing the need for conventional water heating on hot ...
Content type: Core Report, Research | Document ID: PP-93-1 | Author: Bristol Stickney
Off-Peak Water Heating: Innovative Approaches
March 1, 1993
Two new approaches to off-peak water heating—high-temperature storage and high-volume storage in non-pressurized oversized tanks—may solve some of the problems posed by conventional systems and improve program cost-effectiveness and customer acceptance. The traditional approach, successfully ...
Content type: Core Report, Research | Document ID: TM-93-2 | Author: David Houghton, Karen George
Ozonated Laundering: Radical Concept Claims Dramatic Savings
March 1, 1993
An innovative commercial laundering technology that uses no hot water and no detergent holds promise of dramatic savings in energy, water, chemicals, labor, and sewage fees. Users report good results, but the conservative laundry industry is likely to be skeptical, especially in light of the powerful ...
Content type: Core Report, Research | Document ID: TU-93-4 | Author: Brian Christensen
Water Heaters and Unfired Hot Water Storage Tanks (Commercial)
In this directory we provide concise, printable U.S. Department of Energy (DOE) standards data for all covered equipment types. This includes what types of products the DOE covers, what the standard is, and how to calculate the standard.
Content type: Equipment Efficiency Standards Directory
Water Heaters (Residential)
In this directory we provide concise, printable U.S. Department of Energy (DOE) standards data for all covered equipment types. This includes what types of products the DOE covers, what the standard is, and how to calculate the standard.
Content type: Equipment Efficiency Standards Directory
