Potterton Performa 24 Combi boiler automatic air vent leaking the air vent is on top of the Grundfos circulation pump. Need advice how to replace air vent, have had price from plumber of £80 for air vent plus £70 to fix it, feel it is a rip off, so need advice to DIY.
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by spindel » Sun Oct 28, 2018 9:55 am 
