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Hi John Separate, strangely in my sons wardrobe where the pipes come up from the boiler in the kitchen and then distribute upstairs and down which includes pipes to the hot cylinder tank.

Think the old boiler was a Worcester? Installed a new Worcester Bosch 27Ri. Cant recall what pump.

Thanks. We haven't changed any rads or valves, that might have to happen if and when we changed to a two pipe system. If the pump is higher power, how does it make the heating worse? Thought it would have helped to push the water down the system?

Hello Advise needed please... Got the old single pipe system thru our home, recently replaced the boiler and hot water pump, plus power flushed but the rads are worse than they were before! Would a stronger pump help to push the water (convection) they the system and rads? Would it help to...