Hot water query

[Anth]

Any advice welcome

Can any one help me with a problem i have with my hot water.
I have to run the hot water taps slowly upstairs for the water to be hot enough get a wash or fill the bath, which seems to take ages. If i turn the tap on full the water turns cold. When i say i have to run it slow i mean really slow taking up to twenty min to fill the bath. It used to take this before we had combi fitted and everything heated from the fire. It has been like this for a while now, but it seems to be getting worse as time goes by. The downstairs taps can be run a little faster but not much.
The boiler is serviced every year so there should not be a fault there. When we first had the boiler fitted we could run the taps faster but still not at full bore, but was definately better than what it is now. Would it cost much to sort out and would there be much disruption to sort out.

Cheers

 

[buffy27]

whats the craic
have u mixer taps where the issue is

 

[Anth]

They are all mixer taps.Originally they were all single units. We had a new kitchen fitted with a mixer then later we had a new bathroom suite fitted with both bath and sink having a mixer tap. Is this the problem. The only thing is it was not as bad when everything was first fitted.

 

[sonray ltd]

what boiler is it ?
the heat exchanger may be getting scaled up.
are you in a hard water area ?

 

[buffy27]

whats the craic.
.hot and cold supplys meet in the mixing chamber in the taps.so one being of stronger pressure would over power the other and force it back the supply.[u need equal pressures in hot and cold ideally for mixers]now ,either the cold is over powering the hot, or as sonray suggested the combi cannot heat the full supply enough as it passes through.so the slower it comes through the hotter it will get, like what is happening. scale plays havock in combi s.

 

[Anth]

We do have hard to moderately hard water. As you both suggest it deos seem that the boiler can not heat the water fast enough as it passes through at a high flow rate. The boiler is a worcester combi 24i. Would it be a simple job to sort and what sort of price would i be looking at.

Cheers

Anth

 

[newbie1]

did they fit a scale inhibitor on the cold feed to the boiler its cylindrical with push fit fittings on it..descale is not the easiest thing to achieve as it gets everywhere(hence the calgon advert for washing machines)

 

[red man walking]

could be a boiler fault. possibly thermisters or diverter valve not staying open. I would get the boiler checked by a decent engineer, possibly even get worcester in.