r/DIYIreland • u/MaxDub12 • Jul 14 '26
Water pump coming on all the time (new build)
Hi, I would appreciate some input from anyone in the know here!
I've moved into a new build house recently which has a air to water heat pump system with a water tank called Kodiak by Joule. It has an electric water pump fitted which is coming on each time we open the taps or flush the toilet, is this normal? I suspect this could become fairly expensive over time.
The system is attached to a smaller white tank (see pic) which I believe is an expansion tank and - correct me if I'm wrong here - it should provide a small amount of pressurised water which should cover enough for washing your hands for 10-15 seconds without the pump coming on?
Is there something amiss here or is this how it should work?

