I am working on a manufacturing facility addition where the owner wants to pursue LEED certification. The LEED energy model turned out that we are not going to meet the 10% minimum.

Hi, I am trying to classify an HVAC System (for the Baseline model) of 3731 m2 distribuited on 6 conditioned floors (HealthCare facilities). Checking the Table G3.1.A (Ashrae 90.1-2007) apparentl

i m using HAP 4.41 for HVAC load calculation and energy modeling but unfortunatly the weather data available is hourly average s it ok to use for leed energy simulation or i ahve to go to another f

We have a culinary school, the minimum OA per 62.1 is only 10k cfm, but the fume hood exhaust can go above 100k cfm.

I have couple of questions about filling table 1.4.7: 1- Table 1.4.7A asks for the total cooling capacity, I use HAP 4.6 and the cooling capacities are calculated according to ASHRAE 90.1.

What if the project don't have any A/C? there are 3 retails, 1 wc. All are separated buildings. What should I do with ASHRAE 5.4, 6.4 and for energy simulation?

Does anyone know if isolation valves on a multiple chiller plant are required by ASHRAE, or they simply best practice? I have looked into this in ASHRAE documents, but have not found anything yet.

According to 5.4.3.4 (mandatory provision) enclosed vestibules shall protect building entrances that separate the conditioned space from the exterior.

We are building a Hotel in Doha, Qatar. We are try to apply for LEED certified. While I start , I meet a Target Finder problem. This Target Finder only design for US climate.

Hi all, For the people who have submitted for LEED (v3) using Trane Trace: To what level of detail do you model the heating and cooling cfm and exhaust cfm on room/zone level for large buildings?