EWH ASHRAE Compliance

Osama Touni

LEEDuser Basic Member

1 thumbs up

Project location :

Saudi Arabia

March 24, 2019

Regarding Electric water Heater, is there any equation to calculate the EWH energy factor to compare the result with the equation of ASHRAE 90.1-2007...EFmin = 0.97* − (0.00132 × V).

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Mon, 03/25/2019 - 18:45

I'm not sure i understand the question

Osama Touni

LEEDuser Basic Member

1 thumbs up

Tue, 03/26/2019 - 05:21

The EWH manufacturer cannot provide the EF is there any equation to calculate the EF of the proposed EWH ?

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Tue, 03/26/2019 - 13:56

Thanks for the clarification. Not that I am aware of. I have never heard of a manufacturer that could not provide this information. If they cannot provide it then you cannot attain LEED certification. Meeting the minimum equipment efficiency is a mandatory provision and all LEED projects must meet the mandatory provisions or you cannot earn the prerequisite.