Owner of this Worcester Greenstar Junior 24i complained about very poor hot water flow from taps in his kitchen and bathroom. When I got to site and tested existing flow on this boiler I measured 5 liters a minute in the kitchen and 3-4 liters a minute on bathroom taps. With such a poor water flow his bath was pretty much not usable and shower would not work at all. Mains cold supply gave around 12 liters a minute flow and expected figure for hot water from this Worcester Boiler should be around 9 liters a minute.

After checking for restriction on strain filters on taps and cleaning them problem got quickly narrowed down to the actual Worcester Greenstar boiler. Boiler under repair below:

After replacing faulty parts and cleaning boiler filters now it supplies full 9 liters a minute of hot water as expected.