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.

Hi, I previously filed an innovation credit with my design preliminary submission and received an comment from GBCI therefore it is pending.

I have a question about thermal blocks in multy family residential buildings. I'm working with a building that has 4 floors and totly 7 appartments.

Hello everyone, I am working on a residential project. The proposed case HVAC system is Water loop heat pump with cooling tower and natural gas based condensing boilers.

For the purpose of energy modelling of an industrial building, there are rooms which have process related humidity control (humidity control which is not intended for comfort).

Hi, not sure if I am missing something but the USGBC website's 'Resources' section does not have an updated section 1.4 table for LEED v4.

If a zone has a large exhaust fan which the exhaust rate is greater than the OA intake at the AHU (the rest of OA will be transferred from other zones , make up air, or infiltration).

This question came up and I want to refresh my memory. The baseline model must ALWAYS (baring DV) have the same ODA as the Proposed Design...also when the Proposed Design is applying for the increa

Based on ASHRAE 90.1, the chilled water pumping power must be 22 W/gpm and does not mentioned the effect of pumping head.