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Hot water back on after 27 years but it's milky
- Thread starter Jeff543
- Start date
- Joined
- 21 Feb 2021
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- 396
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It clears after a minute or so.
- Joined
- 21 Feb 2021
- Messages
- 396
- Reaction score
- 1
- Country
So I can wash the dishes with it i.e. it's not poisonous? What's causing it? Faulty pipes?
Air is not poisonous.
The water inside a combi is at mains pressure. Cold water, under pressure, can hold more dissolved air than the same water, either hot, or unpressurised, or both.
The water in the combi is heated up.
As soon as it emerges from the tap it is unpressurised and the excess dissolved air forces its way out.
Same as opening a can of coke
Or divers getting the bends.
The water inside a combi is at mains pressure. Cold water, under pressure, can hold more dissolved air than the same water, either hot, or unpressurised, or both.
The water in the combi is heated up.
As soon as it emerges from the tap it is unpressurised and the excess dissolved air forces its way out.
Same as opening a can of coke
Or divers getting the bends.
I'm intrigued!
I've seen a 'professional' adjust the DHW inlet on a combi until it just starts turning milky and then declare it as at its optimum.
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