Intermittent heat

Sometime I switch the shower on and the heat is perfect - I can hear it boil and the water is nice and hot.



Other days it wont boil at all, is or it intermittent, cycling between hot and cold.



I was told it was something to do with water pressures but cant seem to identify a problem with pressures elsewhere in the house or any sort of trend.



This is doing my head in...
Asked 13 years ago by Anonymous

The things to check first are.

1 That the main valve coming into your house is fully open.

2 Then check that the valve on the line to the shower is fully open.

If these valves are not fully open then there may not be enough water
getting to your shower to cool it properly the overheat safety device will turn
the power off until it cools Then it all starts again

Make sure that the shower head is clean and clear, that the hose isn’t kinked (this can happen just behind the hand set where it is difficult to see) also check the inside of the hose although it can look OK on the outside it could have collapsed internally

You could give your local water authority a ring an ask them what your water pressure should be, they will probably say that the supply a minimum of 1bar (the minimum required to operate a shower)however press them and ask what it is likely to be first thing in the morning (when everybody is showering)

 

They could have the pressure turned down because they are working on the main, or because there is a burst pipe some where and they have turned the pressure down to try to save water, or the pressure maybe low just because there is a burst pipe somewhere, that hasn’t been discovered yet!

 

 

 

Answered 13 years ago by Anonymous

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