How hot should hot water be?

JimiMac

(1) How hot should the water be coming from the hot tap?
A mixer valve was fitted to my cylinder and it has a max. outlet temp. of 50 degrees. I am not sure if max. temp. has been reached any time I tested it (not back in house yet) but so far the water feels like it could probably be a bit hotter.

(2)
Can anybody recommend which type of mixer valve I should use if replacing the present one (it seems to be fairly basic, requiring a nut to be adjusted to change the setting).

Any suggestions appreciated,
Jim

10-10-20

A minimum of 63 degrees in the hot water tank to reduce the possibility of legionaries disease existing.

JimiMac

Thanks for the reply,
I would have thought about 60 for the taps as well.
Do you think 50 degrees would be hot enough (for showers also).

maniac101

Legionella is only a concern in the tank, where a temp of 60 degrees is advisable. However, temp of 60 degrees after the mixing valve is way too hot in my view. The temperature in my system is set to 42 deg after the mixing valve and is more than adequate, (the temperature in the tank is 60 degrees). The ideal temperature for a shower is around 38 degrees.

JimiMac

maniac101 wrote:

Legionella is only a concern in the tank, where a temp of 60 degrees is advisable. However, temp of 60 degrees after the mixing valve is way too hot in my view. The temperature in my system is set to 42 deg after the mixing valve and is more than adequate, (the temperature in the tank is 60 degrees). The ideal temperature for a shower is around 38 degrees.

Thanks maniac
Jim

GreeBo

Could it be that the cold feed has more pressure than the hot one and so you are getting more cold water and thus lowering the temp?