I have a glo worm boiler which heats our water and central heating and a new (2 yrs old) hot water tank.
The problem I have is that over the last few weeks, the water is getting cooler and cooler. The central heating is heating up OK and the boiler is working.
I have the water on for 2 hours in the morning and 2 hours in the evening and it is lukewarm at best.
Any thoughts would be gratefully received.