Air in Water Lines

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Air in Water Lines

Author: rneydl (PA)

Happy New Year All! When I am away from home for more than a couple of days, I turn off my gas-fired hot water heater and close the shut-off valve in the basement where the water line enters the house. When I return, whether after 3 days or a couple of weeks and open the water valve, I can hear the water run for 15 to 20 seconds before it stops. I then open each faucet and a lot of air exits before the water runs without hissing or spitting. I do not turn the hot water system back on until after I go through this process. How does so much air get in the system, and can anyone recommend changes to prevent this from happening? Thanks in advance!

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Re: Air in Water Lines
Author: bernabeu (SC) situation is normal hot water will 'absorb' more air than cold water when hot water in tank cools down the (formerly) entrained air will rise ============================================== "Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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