The LEED v3 reference book already refers to ASHRAE 90.1 "with errata but without addenda."  The v4 book only says "with errata."  Does that imply that all addenda to ASHRAE 90.1 must be

Hi everyone, 

I'm wondering what is the most common software for energy modelling ASHRAE 90.1

Hi,

how can i do if my project's heat pump /chiller manufacturer doesn't provide efficiencies AHRI-rated?

My proposed design for lab utilizes a heat recovery chiller connected to geo-exchange. There is a 40 ton process chilled water load on the heat recovery chiller.

I am working on a LEED project with revolving doors. The targetted U value for glaze is 1.9 W/Sqft.K (including frames), SHGC 0.25.

Hi all experts,

I have some questions regarding greenhouse gas (GHG) emissions for LEED V4 and V4.1 certification.

Hi all,

Hi , I am working on a lab space with 100% OA , for these spaces Cooling load is driving airflow, now the OA that we calculated for Proposed case is not sufficient to maintain the setpoint in the s

I am working on a hotel where system 6 is the baseline for the podium, one of the spaces is a kitchen served by a single zone VAV 100% outdoor air unit.