Hot water cloudy

ankspon

Is it usual for the hot water to run cloudy from the tap,we have a combi boiler and when the cold tap is on it runs clear.

SailorSam

It's nothing to worry about.
It's probably just air. Millions of tiny air bubbles and as the water settles they go away.

doverswot

The water from combi boilers is heated directly from the mains, so the only time the water is released to the atmosphere is when it comes out of the tap.
This means that during heating, the calcium bi-carbonate present in the water changes to calcium carbonate.
his causes the creation of Carbon Dioxide which close up is seen as millions of bubbles, this is not sediment it’s merely cosmetic.

If you run some hot water into a glass you'll see that it clears from the bottom as the gas escapes.

This phenomenon is more apparent in hard water areas and from models with perhaps slower and/or lower flow rates.

ankspon

Thanks for the explanation

muckybutt

We have exactly the same situation, our hot water is mains pressure and we always get the cloudyness, never been bothered about it but the explanation is helpful cheers

VfM4meplse

muckybutt wrote: »

We have exactly the same situation, our hot water is mains pressure and we always get the cloudyness, never been bothered about it but the explanation is helpful cheers

With a name like muckybutt I would be very concerned about the ability of your water supply to clean effectively :rotfl:!