Empirical evidence that missing refrigerant suction line insulation decreases efficiency therefore increasing energy costs.

Replies to This Discussion

Permalink Reply by Bob Blanchette on March 8, 2012 at 9:23am

Some have claimed insulating the high and low side lines together has helped reduce high side pressure, but the jury is still out on how much energy it saves.

• ▶ Reply

Permalink Reply by William H Nickerson on March 8, 2012 at 4:48pm

Very good question.Last week I attended a seminar on the Internation energy conservation codes.One of the changes was increasing insulation by one inch on the high side.There may be some more info on it if you search IECC building codes?Section 403 and IRC sectionM1401.3,good luck.Keep us posted

• ▶ Reply

Permalink Reply by Sean Lintow Sr on March 8, 2012 at 8:37pm

The first part is simple - not that are legitimate as it does depend on the unit, where it is located,conditions & how much the unit it is used - though you might be able to find a % figure that might work for you. As for having a cost reason to fix something damaged, worn out, etc... that is a big issue IMHO - some items (and I am not saying that this is one) should just be listed as mandatory like air sealing before you add more insulation into an attic, etc...

• ▶ Reply

Permalink Reply by Michael Matthews on March 9, 2012 at 9:49am

The consensus is that we should insulate it for numerous reasons, however, without the actual dollar figure metric to install in the NEAT library, it only cuts down on the allowable expense that goes toward some other measures.

Thanks everyone for the info, keep it coming! 

• ▶ Reply