Building and Construction - Water Heater Energy Factor

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Water Heater Energy Factor

Andy Energy

2007-12-28, 9:25 am

Dose anyone have guidelines for water heater EF based on age and
steady state efficiency. How does EF compare to AFUE?

Andy

ransley

2007-12-28, 1:25 pm

On Dec 28, 8:30=A0am, Andy Energy <andyene...@earthlink.net> wrote:
> Dose anyone have guidelines for water heater EF based on age and
> steady state efficiency. =A0How does EF compare to AFUE?
>
> Andy

Look at tankless Bosch, takagi and Rinnai EF is near AFUE and does not
go down much with age, I would guess with tank 1-2% reduction a year,
It depends on use and how hard your water is. Takagi makes a
condensing tankless.

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