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When we look into the LEED Reference Guide for Option 1, it seems to require a...

Option 1 of this credit states that all motors 5 hp and greater must have VFDs that decrease fan power to 30%. If none of the installed fan motors are 5 hp or greater, can this credit be...

Like Heather's question above, what if the equipment to be installed is less than 5 hp AND doesn't fall under the HVAC equipment categories listed in section 2.9 of the CPG, such as Variable...

What should we consider as baseline if we are replacing some of the HVAC equipments?

Considering a multi-zoning office with separate constant volume systems and zone control on every solar exposure, private office & special occupancies; can modulation of HVAC system in...

How can I model a clean room project where there is a lot of non process load in the HVAC. Can I assume HVAC as process load since it is not just for human comfort and is also for having the...

I'm working on a TI project where the tenant occupies 2 floors of an 8-story office building. I have an overhead...

I have a small project where the existing system in a 10 story building is a water source heat pump system. From what I gather, this type of system is not very friendly towards achieving LEED CI...

Has anybody else had any problems using the ASHRAE 90.1-2007 Interactive Forms required for this credit when pursuing the building simulation option? The lighting form, for example, will not...

I am working on a small office space. I am trying to get 5 points for equipment efficiency. CPG section 1.4 indicates to provide calculations for part-load condition. It is not clear to me what...