ENERGY STAR is the trusted, government-backed symbol for energy efficiency which helps us all save money and protect the environment through energy-efficient products and practices. Residential water heating represents the second largest consumption of energy in the home, right behind heating and cooling. For many years, there was no official ENERGY STAR® program for water heaters. But, beginning on January 1st, 2009 the DOE released their final requirement and established the ENERGY STAR® program for Residential water heaters.
ENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy. Their goal for developing this program is to assist the residential water heater manufacturers in promoting high efficiency products that save money, use less energy, and deliver the same or better performance as comparable products.
Residential High-Efficiency Gas Storage Water Heaters
- Minimum Energy Factor (EF) of 0.67 as of September 1st, 2010.
- Minimum First Hour Rating (FHR) of 67 gallons
- Annual energy savings of 14%*
Whole Home Gas Tankless Water Heaters
- Minimun Energy Factor (EF) of 0.82
- Minimum gallons per minute (GPM) of 2.5 at a 77° rise
- Annual energy savings up to 29%*
Commercial Water Heaters
- Minimum Thermal Efficiency (TE) of 94% as of March 20th, 2013
- Maximum Standby Loss <= 0.84* [(Input Rate / 800) +110(Volume)1/2] (BTU/Hr.)
- Minimum 3 year tank warranty & 1 year parts warranty