Our house has a grundfos home booster pump due to narrow victorian pipes in our area.
We have been getting recurrent air locks over the past few weeks. After a grundfos engineer review, there is no inherent problem with the pump but the pressure of the mains water pipe refilling the water storage tank is low and the tank is taking far too long to fill. The airlocks are caused by the tank emptying fully (often after only 1 shower) and pulling in air. Previous mains filling of the storage tank was normal and 4 or 5 showers in a row did not cause any problem. We have a shared supply with our neighbours' houses but theirs are unaffected.
The pressure in the cold water kitchen tap is also low, (much less than the hot tap). Strangely the outside garden tap pressure is completely unaffected. It's unclear what's causing the issue whether there is some constriction/blockage selectively affecting some pipes or some other problem.
We would appreciate contact from an experienced plumber who can solve the problem for us. We have unfortunately had a plumber out previously who was of little use and suggested we have a powerflush (!). It would be helpful to have an indication of what you would be checking for as a possible cause for the problem - we would be reluctant to use the services of someone who can't solve the problem.
We have been getting recurrent air locks over the past few weeks. After a grundfos engineer review, there is no inherent problem with the pump but the pressure of the mains water pipe refilling the water storage tank is low and the tank is taking far too long to fill. The airlocks are caused by the tank emptying fully (often after only 1 shower) and pulling in air. Previous mains filling of the storage tank was normal and 4 or 5 showers in a row did not cause any problem. We have a shared supply with our neighbours' houses but theirs are unaffected.
The pressure in the cold water kitchen tap is also low, (much less than the hot tap). Strangely the outside garden tap pressure is completely unaffected. It's unclear what's causing the issue whether there is some constriction/blockage selectively affecting some pipes or some other problem.
We would appreciate contact from an experienced plumber who can solve the problem for us. We have unfortunately had a plumber out previously who was of little use and suggested we have a powerflush (!). It would be helpful to have an indication of what you would be checking for as a possible cause for the problem - we would be reluctant to use the services of someone who can't solve the problem.