We have just replaced our old combi-boiler with a new condensing model, and the plumber noted that we don't have great water pressure (but was just as bad before we replaced the boiler). For example, the electric shower in our 2nd bathroom provides only a scalding dribble if at the same time another tap is opened, or the washing machine is filling.
The plumber told me that a pump cannot be used with the combi-boiler, and wondered whether the mains stopcock tap (which I had discovered under some floorboards in the hall when relaying them) was fully open correctly. Otherwise he said that the only way to improve the pressure would be to fit a larger rising mains pipe from the road, and that this was a big job.
I have checked the mains stopcock - and it was fully open. HOWEVER, at the tap, the mains supply is reduced from a 22mm to a 15mm pipe. Would this cause a reduction in pressure for the whole house?
Advice appreciated!
The plumber told me that a pump cannot be used with the combi-boiler, and wondered whether the mains stopcock tap (which I had discovered under some floorboards in the hall when relaying them) was fully open correctly. Otherwise he said that the only way to improve the pressure would be to fit a larger rising mains pipe from the road, and that this was a big job.
I have checked the mains stopcock - and it was fully open. HOWEVER, at the tap, the mains supply is reduced from a 22mm to a 15mm pipe. Would this cause a reduction in pressure for the whole house?
Advice appreciated!