Water sputtering and hissing from all upstairs water outlets

[emcconne]

I have a 2 story home with an upstairs bathroom. Every water outlet (sink, bathtub, toilet) in this bathroom sputters and hisses when the water is turned on. After a few seconds (20 - 30) it gets better but continues to do it occasionally during use. The downstairs bathroom does sputter occasionally, maybe once a month or so) but not often. I haven't heard any "hammering" in the pipes. It would appear to be air in the pipes but how does it get there? and how do I get rid of it?

Thanks for any help it will be greatly appreciated.

[Speedy Jim]

If the service pressure drops momentarily, air will be sucked in at the highest level. Then sputter out on the next use.

If this is a well pump, useage may draw pressure down enough to cause it.

If city water, could be pressure drops at night or during maintenance, or insufficient mains pressure/flow.

Jim

[Greg O]

My guess is that it is air trapped in the water. If you are on a well, you may have a slight leak before the pump. Also it is possible to just have air in the water naturally. It could also be methane gas if you are on a well. When the water sits in the pipes unused, the air seeks the highest point of your system, the upstairs. Check with a plumber, if all else fails you maybe able to get a air bleed installed simular to what is used on boiler heating systems. Greg