There is a loud “engine” noise coming from under the kitchen sink, even when water is turned off. It comes and goes randomly and when the noise starts I can also hear water n the walls. I also have a big white tank under the sink, not sure if it’s connected to the noise but it’s sounds like a motor.
The water pressure may be too high and require draining. Also could be a drainage problem within the area.
Could be a macerator that’s malfunctioning or it could be a water boiler for hot water under the sink
Sounds like air trapped in the system. Bleed the system out and it should get rid of the noise
The noise you're describing, especially with the presence of a "big white tank" under the sink, suggests it might be related to a water filtration system, a water softener, or possibly the under-sink plumbing setup for an unvented hot water system.
mt
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hot water expansion tank under sink could be faulty / or there maybe leek on mains water pipe
The loud engine-like noise and the presence of water in the walls, it's possible that there is a problem with your water pump or pressure tank. The noise could be caused by a malfunctioning pump motor or issues with the pressure tank's components. Additionally, the presence of water in the walls suggests a potential leak in the plumbing system, which could be contributing to the noise and causing further damage or this could be a water heater that is having problems with pressure buildup and nowhere to vent or possibly a leakage somewhere therefore always drawing water from the mains to heat.