Loss of pressure to showers only

[Moomar65]

Hi, I am a complete novice when it come to DIY plumbing and looking for any help in troubleshooting this pressure issue. I have two Mira Excel showers that have both lost pressure over the last month but at different times. I have cleaned the showerheads and hoses and I have had a plumber round who has replaced the cartridge and back plate on one of the showers (en suite) and whilst the pressure is better it is still not as good as it used to be. Since this was "fixed" last week, the pressure has now dropped in the other shower. I have an unvented mains pressure system with a Heatrae Sadia Megaflo cylinder next to the Worcester Oil boiler in the garage. Any ideas as to what might be causing this issue?

 

[SimonG]

When did you last have the unvented cylinder serviced?

 

[Moomar65]

When did you last have the unvented cylinder serviced?

Not since we moved in to the property 3 years ago. Do you think that might be the issue?

 

[ShaunCorbs]

Does the issue also happen in the kitchen hot tap ?

 

[Moomar65]

Does the issue also happen in the kitchen hot tap ?

No the kitchen tap has good pressure and there's been no noticeable change unlike the showers.

 

[SimonG]

Cleaned the filters in the showers?

 

[Moomar65]

Cleaned the filters in the showers?

Yes, they were done last week when the plumber was here to check and change the cartridge on one shower, but not the second one because that was ok last week and now it's not

 

[SimonG]

Having water on and off disturbed some crap in pipe now moved into shower filters after the event?

 

[spanner]

Personally if you've not had it looked at yet. Would ask you call megaflo / Heatrae Sadia to get one of their tecs round to have a look?
Depends? Levels?.. Wheres the bathroom and kitchen to where hot water cylinders sited?
What size is cylinder?

 

[Moomar65]

Thank you all for the assistance. This has now been fixed by my plumber. There was a build up of gunk in both shower filters and now normal pressure has been restored. I appreciate the help in troubleshooting the problem.