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Re: BeerIsGood post# 47126

Saturday, 10/20/2012 7:29:50 PM

Saturday, October 20, 2012 7:29:50 PM

Post# of 94142
"The energy factor (EF) indicates a water heater's overall energy efficiency based on the amount of hot water produced per unit of fuel consumed over a typical day"

http://www.aricoplumbing.com/waterheater/waterheater-energy-factor.aspx

I predict a microwave hot water heater to have an EF of approx 0.8 (at best).

If that ends up being correct, a microwave hot water heater would cost 3 times as much to heat water than the 2.4 EF heat pump hot water heater.

These have recently come down in price. Looks like you can buy one now for under $1000.