Caravan water pump buying and troubleshooting checklist
Understand pump flow, pressure, noise and basic checks before replacing a caravan or camper water pump.
Check the whole water system—including power supply, strainers, leaks and plumbing restrictions—before assuming the pump needs replacing.
Identify the symptom first
A pump that runs continuously may be responding to a leak, air entering the line, an open tap or a pressure-switch issue. A pump that will not run may have a power-supply, fuse or control problem.
Turn the pump off if it is running dry, overheating or leaking onto electrical equipment. Use the manufacturer's troubleshooting instructions for your specific model.
Compare flow and pressure
Flow is commonly listed in litres per minute, while pressure may be stated in kPa or psi. Higher numbers are not automatically better: taps, filters, fittings and the hot-water system may have pressure limits.
Check whether the pump includes a pressure switch, whether an accumulator is recommended and how the manufacturer specifies duty cycle and dry-run protection.
Plan for noise and access
Mounting position, flexible hoses, vibration isolation and plumbing layout can influence noise. Leave room to clean the inlet strainer and inspect connections.
Measure the existing pump's dimensions, voltage, electrical draw and fittings before ordering a replacement.
Know when to seek help
For persistent leaks, unusual wiring, damaged fittings or work affecting regulated plumbing or electrical systems, use a suitably qualified tradesperson. Do not bypass protective devices.
Before you buy: checklist
- 12V supply and fuse rating
- Required flow and maximum pressure
- Water-heater and fitting pressure limits
- Inlet strainer and leak checks
- Mounting dimensions, noise and access
- Warranty and service parts
Frequently asked questions
Why does my caravan water pump keep cycling?
Possible causes include small leaks, pressure loss, air in the line or pressure-switch behaviour. Check the manufacturer's troubleshooting instructions.
Can I fit a higher-pressure pump?
Only if every component in the water system is rated for it. Check plumbing and water-heater limits first.
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