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Does AC refrigerant insulation in California require UV resistant cover?

0 votes

From Daniel:

Does the insulation around the lineset need to be wrapped or painted with some type of UV resistant surface if it located outside? Is there a code for this? Also are there any codes you can reference for this?
Im in California, and any input would be greatly appredciated.

asked in Cooling System by darekrudy (21,730 points)
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1 Answer

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Hi Daniel,
I have no knowledge of UV protection requirement on AC suction lines insulation. However, there might some local (California) law that I’m not aware of. International residential code requires refrigerant vapor (suction) lines to be insulated with minimum R4 rated insulation – 2006 IRC [1411.5], and 2006 UMC (Universal Mechanical Code) requires to follow manufacturer recommendations.

answered by darekrudy (21,730 points)
From Chris Barlow @plumberex.com

There is a requirement in California under Title 24 that states any exposed insulation must be protected with a UV resistant cover. My company manufactures such a cover and we are located in Palm Springs. I’ll send you out a sample if you like. Give me a ring at 800.475.8629 and I’ll get your address info.


Chris Barlow