Can I Replace My Own Water Pump or Do I Need a Professional?
Replacing a water pump can sometimes be a straightforward job, but it depends on the type of pump, the installation and the electrical work involved. Knowing when to DIY and when to call a professional can save you time, money and potential damage.
When Can You Replace It Yourself?
If you're replacing a small domestic booster or pressure pump with an identical model, and the existing plumbing and electrical connections are already suitable, an experienced DIY homeowner may be able to handle the mechanical replacement.
Before starting, make sure you:
- Switch off and isolate the electrical supply.
- Shut off the water supply.
- Release pressure from the system.
- Check that the replacement pump has the correct flow and pressure requirements.
- Make sure the pipe connections and fittings are compatible.
- Follow the manufacturer's installation instructions.
When Should You Use a Professional?
Some installations are better left to a qualified plumber, electrician or pump technician.
Professional assistance is recommended for:
- Borehole pump replacements
- Pumps connected to complex pressure-control systems
- Three-phase pumps
- VSD-controlled pump systems
- New electrical wiring or changes to the electrical installation
- Pumps installed in difficult-to-access locations
- Systems requiring changes to pipework or pressure controls
A borehole pump, for example, involves electrical connections, submersible cable, rising pipework and equipment deep inside the borehole. Incorrect installation can damage the pump or create a serious electrical safety risk.
Don't Simply Replace the Pump With a Bigger One
One of the most common mistakes is assuming that a higher-powered pump will automatically solve a water-pressure problem.
The replacement pump should be selected according to the required flow rate, pressure, total head, pipe size and water source. A larger pump can sometimes cause excessive pressure, increased electricity consumption or problems with the existing plumbing.
What About the Electrical Connection?
If the replacement involves modifying electrical wiring, protection devices, isolators or control panels, use a suitably qualified professional. Water and electricity are a dangerous combination, and electrical installations should comply with applicable local regulations.
The Bottom Line
If you're replacing a small pump with the same correctly specified model, a competent DIYer may be able to do the mechanical work. However, if the installation involves a borehole, new electrical work, three-phase power or changes to the pump system, professional installation is the safer choice.
Not sure what pump you need? Contact SuperPump Water Pumps for help selecting the correct pump, fittings and accessories for your installation.
