Insulating

REX

If you cant use black pipe and cast iron emitters,you should insulate all copper heating pipes,thats how i was taught. What do u think about insulating all heating pipes?

Al Letellier_21

insulating piping

In my book, all heat piping should be insulated.The pipe is just the conduit to get the BTUs to where you want them. Uninsulated pipe = lost energy.

Jamie Hall

Doesn't matter

what the metal is -- copper or black or whatever.  If it's not intended as an emitter or radiator and it's a steam or hot water line, insulate it.  If it's a dry return or wet return, it doesn't matter so much -- but if it's a hot water system, I'd insulate everything that wasn't an emitter.

REX

indeed

thats how you do it