Fuel type and its availability in your area may narrow your water heater choices.
Gas water heater efficiency rating.
The fuel used by a water heating system will not only affect annual operation costs but also the water heater s size and energy efficiency.
Products must meet minimum requirements for energy efficiency hot water delivery warranty period and safety.
Due to inconsistent unreliable interpretations of high efficiency ef ratings across national brands all water heating manufactururers are now required to comply with the new doe testing procedures and rating standards.
Learn how a product earns the label.
This is another top quality gas water heater that you can get for the house right now.
To help consumers in their water heater purchase decisions the department of energy has developed new industry standards.
However the cost of electricity makes their operating cost higher.
It also has a maximum btu of 199 000 and can produce 9 8 gallons per minute.
It is made to be impressive in terms of energy efficiency.
Check our gas and electric water heater ratings for more.
The price of an electric water heater varies.
Efficiency standards for gas and electric water heaters are different but both use the uniform energy factor uef ratings system where higher scoring units produce more hot water while using less energy.
The following is a list of water heater options by fuel or energy source.
Water heater key product criteria.
Buying a water heater.
It comes with an impressive energy factor of 0 82.
Not only does this water heater have a gas rate input of 15 200 to 199 000 btus.
Ef is determined by the department of energy s test method outlined in the 10 cfr parts 200 to 499 edition revised as of january 1 2014.
An older measure of water heater overall efficiency that is being phased out due to new test methods for water heaters.
The specification covers high efficiency gas storage whole home gas tankless solar and high efficiency electric storage water heaters.
As the result of recently updated efficiency standards water heaters under 55 gallons now have a 4 percent boost in efficiency while.
But also comes with a 12 year warranty for the heat exchanger 5 year parts warranty and a year warranty for labor making this perhaps the best residential water heater on the planet.
The higher the ef value is the more efficient the water heater.
The unit has an ef of 0 93 for natural gas or propane up to 94 percent thermal efficiency and an energy star rating.
Typically electric water heaters are similar to gas water heaters in efficiency.
