90.1 only says above grade wall, but if we have a wall that's directed connected to another building, should we also include those wall area in the calculation?

Hello, We have a project where our resort rooms will be using spray foam insulation above a concrete slab, set in zone 1. Our rooms are actually small villas.

I use Carrier-HAP and according to ASHRAE 90.1 G.1 #4, all baseline HVAC fans should be running continuously when the space is occupied and cycled when the space is unoccupied.

Hi, We are currently responding to LEED Reviewer comments for a building.

Our project involves the new construction of a healthcare clinic that is being heated and cooled via heating and chilled water produced by a campus central plant.

Hello! An educational building will have no AA for its classroom, workshops and labs (mainly 90% of the project area), as all these areas will be naturally ventilated (complying with section 5.1 o

Is it true that the HVAC baseline efficiency in Table 5.8.x is the total HVAC efficiency including fan? I.E.

Hi, I am not sure whether to class mechanical rooms which are free cooled by outside air as "conditioned" for the purpose of the baseline (so the baseline would be on system 5 in this example).

We are looking at an existing 300,000 s.f. hotel highrise in a downtown location that is currently on a citywide district steam utility.