EA Credit 4: Enhanced Refrigerant Management

John, this is typically covered in the system specs. Can you clarify what obstacles you're facing in finding it? (If you join LEEDuser as a member, you'll get lots of useful guidance on this above.)

I always have a hard time finding the refrigerant charge and i have looked at specs. What else can you recommend Tristan? Thank you.

My reply is late for the OP but may help others...
In my experience the refrigerant charges are difficult to obtain since they are rarely included in equipment specs / cut sheets / shop drawings. I've always had to request the info from the equipment suppliers. It may be listed in the manual if the equipment is pre-charged at the factory. The real challenge is with systems requiring field-installed refrigerant lines (split DX systems, coolers/freezers with remote condensers, etc) since the refrigerant charge depends on the size and length of installed piping. In that case, I request an estimate from the refrigeration contractor once we've received shop drawings, then request confirmation once the equipment has been installed and charged.

For consultants, it would be good practice to specify it as a parameter to be included in the supplier's equipment shop drawings and/or as part of the contractor's materials reporting requirements for LEED credits.