Hot water doesn't work properly

[advizo]

Since fitting a new shower upstairs it seems the hot water doesn't want to run.
Shower works but goes hot for about 5 minutes then cold for about 2 minutes. this seems to be getting worse.

The hot water downstairs does not seem to work at all unless i turn the boiler off and on. the water then works for about 20ish seconds (about enough time to fill up a washing up bowl)

The taps in the down stairs toilet sem to be getting progressivly worse as well as the shower.

Had a plummber in and was told it is because there are too many bendy taps effecting the water flow (doesn't pour out but comes out fast enough for me) he didn't answer the question of why the hot water is not working.

unsure if the radiators are effected as not had them on all summer.

want to get tthis fixed before there is no hot water at all

any help

 

[Caduceus]

Didn't see this post until today. adviso, you need to call a more attentive plumber. It sounds as though the dip tube of your hot water tank may be broken inside the tank. Some on site diagnostics would probably find the problem. Seems like you also have other issues in the home, too.
Do you feel comfortable tackling these by yourself? Your last post was incomplete and we could advise you if you need the help.

 

[johnjh2o]

How are you making your hot water? If it's from a tankless coil in the boiler it may be getting plugged with sediment. Tank less coils are very inefficient. I would look into a water heater or a indirect water heater.
Amtrol- Indirect Water Heaters
John