I have been told by our very reputable Design firm that is is not unusual to have two design appeals on the EA credit 1 and prerequisites.

Hi, On a Arena Sports stadium we are considering the "Building method Area" for the Interior Lighting.

Hi! I am conducting a LEED v2009 EAp2/c1 energy model for a nonresidential building that is more than 5 floors.

When claiming DHW savings due to low flow fixtures, i use the calculator in Table 1.4 to come up with my peak baseline and proposed DHW flows, which it says should use data from WEp1.

The building has two of its bounding walls shared with its neighbour buildings. First question is, is a shared bounding wall considered part of the envelope?

Hello, We have an existing central plant that will be serving new building. How do we model this? Existing central plant will service one existing building and new building.

If the local energy code is more stringent with respect to building U-factors does the baseline model need to meet the local energy code?

If air economizers are not required to be modeled in the baseline system due to climate zone (4a) can you model the proposed with economizers if in design and not model economizers in the baseline?

Our project is an office/retail building that is to utilize water source heat pumps for retail and water cooled self contained VAV units for the office floors.