[Equest-users] Unmet Hours

Patrick J. O'Leary, Jr. poleary1969 at gmail.com
Thu Jul 7 07:56:08 PDT 2011


that would be 500 unmet hours.

the bigger leed review problem i've had is when i have more unmet hours 
in one category in the proposed (like 200 unmet in cooling) and fewer 
unmet hours in the other (like 0 in heating) but the baseline is 
opposite.  certain leed reviewers think this is a problem.  the 90.1 
requirement addresses the unmet hours per the entire building design 
(both heating and cooling) not heating and cooling individually.

On 7/7/11 7:49 AM, Brad Robinson wrote:
> For LEED compliance under ASHRAE 90.1, are the 300 unmet hours the sum 
> of all the unmet hours in each zone, or the peak per zone?  In other 
> words if I have 250 unmet hours in one zone and 250 unmet hours in 
> another zone, does this comply, or is it considered 500 unmet hours 
> total?  By zones, I mean thermal zones served by the same air handling 
> unit.  Thanks.
>
> Brad Robinson
>
>
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