Which cost less to operate-gas or electric tankless water heaters?
Assuming equal output, wһісһ іѕ more efficient/costs less tο operate?
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Gas is the more expensive option, but I reckon it would be a better choice for a tankless heater in view of the fact that it will get warmer quicker. I looked into one of these for my household and the expense of one would not have made a difference. The cost to install was too fantastic in view of the fact that I had to upgrade my electric service (household built in 1950).
I would go with the electric as it’s cheaper and also safer than gas. While gas heats quicker it also releases carbon monoxide which is potentially lethal.
A tankless water heater is mainly used in showers etc, for running a bath (tub) it would be cheaper to have a standard water heater kept at a slighly higher temperature to compensate for the inflow of colder water. It is also cheaper to keep it on 24/7 to eliminate the need for reheating each time.
The UK has what is known as Economy 7 which kicks in after 10pm and off at 7am, during this time electricity is charged at a cheaper rate due to less demand.
Gas water heater with electric ignition would be the best bet.