They can be 8 14 more energy efficient for homes that use a lot of hot water around 86 gallons per day.
On demand water heater gas vs electric.
On the other hand gas tankless water heaters generally have an energy factor of less than 85.
Electric tankless water heaters are extremely energy efficient with more than 98 of energy supplied to the units actually be used to heat the water.
Most gas heaters provide you with at least 8 gallons of hot water per minute expressed as 8 gpm.
Average input ratings for a gas water heater range from around 30 000 to 180 000 btus depending on size.
An electric hot water heater ranges in costs from about 300 to 700 while a gas heater ranges from 400 to 800.
However you will have to take the cost of the electricity used to operate the heater into consideration.
We rated the annual energy consumption cost excellent for a gas.
Electric water heaters typically have a lower upfront cost than gas water heaters.
In many cases using an electric water heater will result in higher utility costs as compared to using a gas water heater.
For homes that use 41 gallons or less of hot water daily demand water heaters can be 24 34 more energy efficient than conventional storage tank water heaters.
This energy star certified titan of a tank delivers up to 72 gallons of hot water per hour dependent on tank capacity which is a rate much faster than the normal electric water heater.
Gas water heaters of all types also contribute to greenhouse gas emissions.
Electric water heaters range in power.
Propane heaters can provide as much as 11 gpm and natural gas as much as 10 6 gpm.
However hot water temperature and flow again depend on the temperature of incoming water.
Gas heaters can have a higher capacity gas water heaters can have a much higher capacity than electric heaters.
Usually an electric water heater supply 5 gallons of hot water per minute whereas a gas tankless can supply up to 8 gallons per minute.
Thus a gas fueled water heater is the better match for multiple uses in a large family.
Gas and electric tankless water heaters run more efficiently than the conventional water heaters of the same fuel type.