We've tried and cannot get any info from GE other than they use R-134A refrigerant. Can anyone tell me from the valumes of these refrigerators normally for residential use that they might use...

It is used in a project two HVAC systems (Split) in two areas of approximately 22.82 square feet, the total project area measures 27,857 square feet. The air conditioning equipment work with 1...

Dear all,

The project we're working on will be cooled with centrifugal chillers. The Mechanical Engineer is suggesting installing a "Reserve refrigerant box", which is a cylinder...

It seems to me that an unintended consequence of selecting a high efficiency water cooled centrifugal chiller ( both R-123 and R-134a) is the greater difficulty keeping impact per ton below 100...

In our project a absorption chiller will be used to cover part of the cooling load. The chiller will run on lithium bromide / water solution. In this case, water is the refrigerant.
Water...

Does the SF6 (Sulphur Hexafluoride) insulating gas used to quench the arc in electrical power equipment (MV switchgears) need to be taken into consideration under the EAc4? The credit language...

Hi,
Where should I get the "gross ARI rated cooling capacity" for air to water heat pumps ? This is not covered by ARI 550/590 which usually applies to chillers. On the technical data...

Is the tonnage requirement for the credit supposed to include compressor capacity only or can additional capacity from energy recovery devices be included in the tonnage?

Dear all,

I just wanted to double check that the VRF system lifetime is 15 years (considered a packaged AC). Is this true?

Thanks,

I'm currently working on a LEED NC project on a central university library projects. While the HVAC centralized cooling unist comply with the requirement, a question has arisen about tenant...