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Plumbing

Hot water out of cold tap shortly with combi boiler

Anonymous user 09/03/2024 - 2.49 PM

Hi, when I use the cold tap in the morning, I will get about 2-3 seconds of really hot water from the cold tap, and then it will return to cold. Is this normal or will this cause a problem like not running hot pipes under cold pipes due to bacteria occurring in cold pipes? We have a combi boiler if that makes any difference. [update] Thanks for the reply, I've found where the problem may lie, it looks like I have a cold water feed going to my upstairs bathroom, sandwiched between the flow and return of 2 central heating pipes, and they are touching. Is this still low risk or would you say it's unsafe?

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3 Answers

D & R Property and Plumbing Maintenance

Rating: 4.9 out of 5
New Romney
pipework is to close to each other ie hot and cold pipes touching or central heating pipework touching the cold pipework. the chances of bacterial contamination in occupied domestic property is very low. it is very low risk
Answered4 May 2017
2

Anonymous user

Yep the other guy is spot-on Cold water pipe definitely too close to a central heating pipe or your hot water pipe.
Answered3 May 2017
2

Anonymous user

Cold pipe to close or in contact with hot/ventral heating pipe
Answered9 May 2017
0