As a general rule you can expect a gas tankless water heater to achieve an efficiency rating of 80 to 85.
Tankless water heaters gas or electric is better.
Gas tankless water heaters are capable of delivering more hot water over 8 gpm than electric systems.
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.
Fuel prices fluctuate but currently the price of gas is lower than electricity.
If your home lacks access to both natural gas and propane the obvious answer to the electric versus gas tankless water debate is electric.
Gas water heaters of all types also contribute to greenhouse gas emissions.
Tankless gas or electric 45 60.
We rated the annual energy consumption cost excellent for a gas.
A gas tankless heater may be a better fit for a household with a large family that has a high demand for hot water.
Prices of natural gas and propane are usually lower than the price of electricity.
Electric tankless water heaters are on average more efficient.
Expected energy savings over equipment lifetime.
Gas and electric tankless water heaters run more efficiently than the conventional water heaters of the same fuel type.
Because of this gas tankless units are less expensive to operate.
On the other hand gas tankless water heaters generally have an energy factor of less than 85.
Type of water heater.