View Single Post
Old 03-11-19, 12:52 AM   #17
Helper EcoRenovator
Join Date: Mar 2018
Location: Rustbelt, USA
Posts: 96
Thanks: 2
Thanked 6 Times in 5 Posts

Originally Posted by ChetT View Post
Todd - That's certainly true for a fuel powered boiler as the heat would go out with the exhaust but not so with electric. The conversion from electricity to heat will still be 100% but the coated resistance heat element will just convert less electricity.
the only way a resistance heater can convert less electricity to heat is by lowering the supply voltage. otherwise, the element just runs hotter until a new equilibrium is reached, with the surface temp of the scale on the element being roughly the same as the surface temp of a clean element.

eventually it runs hot enough where the element fails.
u3b3rg33k is offline   Reply With Quote