Is there any mandatory filter efficiency requirement (MERV) for projects located in areas with a very high PM2.5 levels? Is it mandatory for ASHRAE 62.1-2010 requirements?

We are using a heat pump type water heater. The refrigerant capacity for the unit is over the 0.5 lb threshold.

The project is a single building which is part of a larger educational campus.

Hi  I have a bit of a particular project here, let me explain. We want to certify 5 office buildings under LEED v4 EBOM.

If the percentage below water consumption maximum is calculated to be -22% (not 0%) by using the calculator, is the pre-requisite met or not?

Dear All, I have a doubt about calculation of quantity of REC. I believe you can help me. Using the Example 1 (in page 460 of v4) my project will consume 1,98 MWh per year.

Has anyone heard of an alternative method for combining preferred parking for green vehicles and also providing a discount?

Does the storage of rain water contribute to achieve this prerequisite? The project will irrigate the outdoor vegetation only with rain water.

EBOMv2009 had a streamlined path option for projects that had previously achieved BD+Cv2009 Certification. Does that still exist for EBOMv4?

Hello, What does 'preproject' really mean? Our project is located near a river. Currently there is one building with docks within 50 ft. of the water.