The refrigerant used on my project is not listed in the LEEDv4 form and as recommended on the FAQ section for this credit I am using the LEEDv2009 form to document compliance.

When I...

I am working on a large project for which the cooling is predominantly from central chillers providing chilled water. This complies easily with the requirements of EAc4.

However, there...

Hi all,

For a new construction project, the fan coil unit schedule shows that the fluid for the cooling coil is 30% PG (Propylene Glycol) and that of the heating coil as 40% PG.

...

Which part of a Split System should be considered for the refrigerant charge calculation?

Hi!

I can see that similar questions have been asked before, but I can’t find any answers:

It is an early stage and we are looking at heating solutions for a project. They will...

i was looking at the uploaded cutsheet under the documentation toolkit, and it doesn't look that piece of equipment is meeting the credit requirements. For instance, it is a 1.5 ton unit with R-...

I am having a difficult time understanding how to guide the mechanical designer on specifying compliant equipment. Are there any best practice advice or rule of thumb I could be aware of, or...

I have a project with an air-source heat pump that can either do heating, cooling or simultaneous heating and cooling. The heat pump has two refrigerant circuits. Can I count the heating tonnage...

I have a project with an air-source heat pump that can either do heating, cooling or simultaneous heating and cooling (4 pipes).

When calculating Rc, if only the cooling capacity is taken...

Hello all, we are trying to comply with this credit to certificate a Campus in Colombia. The LEED guidance for Campuses says that to achieve this credit, the campus will prohibit the use of...