Hot Water Temperature

[thelewisgang]

I have a gas combi boiler upstairs in my boiler cupboard. When I run the taps in the upstairs basin/bath it is hot but when I run the hot water in the downstairs kitchen sink it is extremely hot to the extent I have to sometimes use the mixer tap to cool it a bit. What, if anything, could be the reason for this please?

[Old_Geezer]

Not running the upstairs taps long enough ?

[Old_Geezer]

Maybe the pressures are wrong. Perhaps less hot, more mains cold reaches upstairs. Although I'd have imagined cold would be faster downstairs.

[brainiac]

Exactly the same with me: combi boiler in upstairs cupboard, and water in kitchen sink downstairs noticeably hotter than when I run a bath across the landing from the boiler. I've come to just accept it, but I'd love to know why too!

[TonyV]

Turn the stat down on boiler till downstairs is ok and see if upstairs water is still warm enough for u

[thelewisgang]

Well, I'm glad (in a way) that it's not only me! Old_Geezer, I only have to run the downstairs kitchen tap for a few seconds & get very hot water indeed but running the bathroom taps for quite some time never do I get the water so hot. The boiler cupboard is next door to the bathroom too

[thelewisgang]

Will give that a go. Thanks Tony

[Noe-schitt]

It could be a flow rate problem Combi boilers will only heat a certain amount of water to the set temperature in a certain amount of time if the pipes supplying the downstairs taps are smaller than those supplying the upstairs you will have a slower flow rate giving it more time to heat and the water will be hotter