I've just moved into a new build house that has a sealed system installed. Pump broke after two weeks but was replaced (Grundfos, can't remember the model at the moment).
Everything was fine initially, but recently the taps and showers in the house have visibly lost throughput - water still comes out but about half the rate as before. This is for both hot, cold and mixed water.
Sometimes if I leave the tap running for about 30-60s, the flow increases back to what it used to be. However, in the shower it seems to come on strong but then die off. Also, if I start altering the thermostat on the shower the water starts "pulsing" as it comes out - enough to cause the shower hose to twitch like an itchy snake.
The pressure reading on the system sits around 1.5 bar when I last checked, which seems normal (I was told between 1-2 bar should be fine, otherwise top it up).
I'll get on the builder's case, but was hoping to get some help diagnosing the issue myself to make sure they don't just put a plaster on the issue rather than fix the cause.
Everything was fine initially, but recently the taps and showers in the house have visibly lost throughput - water still comes out but about half the rate as before. This is for both hot, cold and mixed water.
Sometimes if I leave the tap running for about 30-60s, the flow increases back to what it used to be. However, in the shower it seems to come on strong but then die off. Also, if I start altering the thermostat on the shower the water starts "pulsing" as it comes out - enough to cause the shower hose to twitch like an itchy snake.
The pressure reading on the system sits around 1.5 bar when I last checked, which seems normal (I was told between 1-2 bar should be fine, otherwise top it up).
I'll get on the builder's case, but was hoping to get some help diagnosing the issue myself to make sure they don't just put a plaster on the issue rather than fix the cause.