I am trying to correctly determine the baseline system for my LEED energy model. I have a 7-story hotel building so it will either be System 1- PTAC or System 2 –PTHP based on ASHRAE 90.1-2007.

We are using heat pumps for domestic water heating. (The water source will be from the campus/district condenser water system.) Can we take credit in the energy calculations using heat pumps?

Hello Marcus. We have a project that will be applying for LEED certification under CI. The project is located on 4th floor within an office building with 5-floors.

We have a project with both perimeter and interior offices.

Dear All:- Greetings I need some clarity in terms in the terms used in "LEED ID + C ref guide page no 172" what is meant by 1.Project area 2.Total Segment area of LEED CI project ECB energy s

Even though the credit language does not state it explicitly, I read "reduce design energy cost compared with the energy cost budget for regulated energy components" to mean "reduce the design ener

Hi All, I am here to post my query about chilled water system,flow and pipe sizes.

I'm working on an existing Building. the original building has its gold certificate CS and all main VAV roof top units are installed originally at 2008.

Hi, I am currently working on an LEED for Commercial Interiors Project and the HVAC Engineer has just heard about some ventilation units with heat recovery which are certified as Passive House Comp