Does anybody know how air could get in hot water piping? I had a detached shop built, with 1" plastic pipe from the main house to the shop. 3/4 & 1/2 copper feeds the Water Heater, sink and toilet. The first time I open the hot faucet each day, it discharges air for a few seconds. I have no problem with the cold water, nor with either hot or cold in the house. Thanks!
- posted
20 years ago