My plumber has fitted a new Quartz shower to my mains pressure system. The old shower - Aqualisa worked very well. Another Aqulisa in a second bathroom shower works perfectly, but the new one has poor pressure. The system is fully pressurised and has a Worcester system boiler, an Ariston mega flo tank and the water pressure is very good, all supplied by a new 25mm water main. The plumber can't understand why a standard Quartz digital is not supplying the pressure experienced on all other outlets and just scratches his head! I am frustrated by the bullsh*t I am getting. Has he fitted the unit correctly?

Cris Jessop, June 2008

the boost on aqualisa showers with the black processor is not designed to work as well as the boost on the older grey processor. I don't think there any adjustments that can be made in the black box

norm, December 2011

hold down the boost button and turn the temperature dial

Adam C, December 2009

Try removing the hose, untwisting and re-connect. Worked for mine!!

Tim Ogden, September 2009

try giving some info

hi-spec plumbing & heating, June 2008

how do we know if its fitted properly we cant see it

sonray heating, June 2008