Electric water heaters work from the inside-out, by warming “elements”, or rods, submerged in a water storage tank, transferring heat from the elements to the water. Although electric water heaters operate as much as 50% more efficiently than their gas-powered counterparts, electric water heating bills can be as much as double.
Standard Tank – typically, electric tanks are rated around .90.
You might think that’s as good as a gas tankless, but again, considering the design and the laws of thermodynamics,
let’s just consider this a baseline, and not an indication of the same cost savings as you’ll see with a gas tankless water heater.
With In this kind of tank, picture two elements getting red hot and transferring heat to your water.
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