Question about hot water

[yex0]

Hi,
Apologies if this is a really daft question, I am clueless!

On several occasions when I have ran a bath the water has been, at best, luke warm. When the taps have first gone on the water has been boiling but during the time the bath has been running (normal, average sized bath) the water from the hot tap has turned stone cold. It will then take the best part of an hour to heat up again.

I always thought that as long as the heating was on the water was always hot?

For example, today the heating came on at 5pm. I ran a bath around 7.15 and before the bath was filled the water from the hot tap was stone cold (and still is)
I have not used so much as a drop of hot water before running the bath.

On other occasions, the bath can fill up lovely and warm with no problems.

Is this normal?

I have gas central heating with a baxi Bermuda back boiler.

Thank you.

 

[ShaunCorbs]

Sounds like your running out of hot water in your cylinder

Do you have separate times for heating and hot water or a combination

 

[yex0]

Both the heating and hot water are on at the same time

 

[ShaunCorbs]

i would say turn the the system on at 4.30 and try it for a day

 

[yex0]

Thanks, I’ll give it a go tomorrow! I always thought as long as the heating was on the water was always hot.

 

[Ric2013]

It can take a long time to reheat a cylinder, especially on the older systems.