: 2. I have heating pipes the hang low in the basement and I would like to replace them with copper pipe. The Pipes I think were over sized when they were installed (the house is 81 years old). The current pipes are 2" but the are being feed by a 1" pipe from the (hot water) boiler. I would like to change the 2" pipes to 1-1/2" copper pipe. The reason for this is to gain head room. I have a 7' ceiling and the pipes hang down about 1-1/2' giving me just over 5' of head room. Remolding basement

Reply:
It all depends on how big your house is, the size of the rads, piping layout, etc.
2" piping is not oversized, if it were 2-1/2" or 3" or larger I would guess there may have been a gravity system originally installed. You're not going to gain that much more headroom anyway and you may disrupt your heating system.
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