Common problems with pressure water pumps – and how to avoid them
I often find that problems with pressure water pumps are not due to the pump itself – but rather to choice, installation, or expectations. Here are the most common mistakes I see, and what you can do instead.
The pump is too small, or the pressure is too low for the need.
✔ Solution: Choose a pump with higher bar (3–5 bar) and sufficient L/min.
Lack of a pressure tank or small leaks in the system.
✔ Solution: Add a pressure tank and check the installation for leaks.
Hoses too small or clogged filter.
✔ Solution: Use correct hose dimensions and clean/install a filter before the pump.
Rigid mounting or lack of vibration damping.
✔ Solution: Mount the pump correctly and use rubber feet or damping.
Air in the system or poor placement relative to the tank.
✔ Solution: Ensure correct priming and short distance to the water tank.
The pump was chosen for low consumption but is being used for high comfort.
✔ Solution: Choose a more powerful pump (15–20+ L/min + higher pressure).
If in doubt, it's better to choose a pump that is slightly more powerful than you think you need. This will provide better comfort and fewer problems in the long run.