Why do my water pipes have air in them?
Why do my water pipes have air in them? The main cause of air in the water lines is water system maintenance. Cutting off the water supply for a period of time can allow air to enter the system. (Running faucets briefly usually resolves this problem.) Maintenance work on the water main may also introduce air into your system. When should I drain my pipes? If you'll be leaving your home for an extended amount of time with no heat, make sure to drain water pipes for winter before you go. Undrained pipes may freeze and burst, causing significant damage...