Pump issue

This is where the leak is and here is what Adam said about replacement options:

For a like for like pump (based on a DAB motor with expansion vessel) will cost - 245 euro and 45 euro to collect and fit. this pump is basic and operates when pressure has dropped by 1bar.

The pumps I supply and fit for house use in the area are a WILO pump (very similar to the Grunfos pump I fitted for Andzej). This doesn't have or, need an expansion vessel and is by far a more superior pump. It operates immediately, replacing the pressure instantaneously so that you do not notice a drop in pressure eg, when you are showering you don't feel pressure drop and then build up again leaving you fiddling with the temperature of the shower.
This is more expensive at - 465 euro and 65 euro to collect and fit.

The DAB pump will work fine but it is normally used on irrigation systems. has a one year guarantee.
The WILO is best for the house pressure and comes with a two year guarantee.