How to Install a Dishwasher: What to Expect
Installing a dishwasher involves connecting to a water supply, a drain, and a power point. While the basics can be done by a competent DIYer, there are important safety and plumbing considerations Australians should understand before starting. Here's what you need to know.
What Type of Dishwasher Are You Installing?
Freestanding Dishwasher
A freestanding dishwasher can be placed anywhere near a water supply, drain, and power point. It doesn't need to be built into cabinetry, though it's often positioned in a kitchen cavity for convenience. Installation is simpler than a built-in model.
Built-In (Under-Bench) Dishwasher
A built-in dishwasher fits into a standard 600mm kitchen cavity. The side panels are hidden by the cabinet. This requires the same connections as a freestanding model but with more careful positioning and cabinet preparation.
What Connections Are Required?
Water Supply
A dishwasher connects to your cold water supply via a standard 3/4-inch fitting under the kitchen sink. A licensed plumber must make this connection in Australia if you're tapping into a supply line — it's not a DIY job unless you're using a snap-on valve on an existing fitting.
Drain Connection
The dishwasher drain hose connects to either the under-sink waste pipe or directly to a drain port. This can often be done as a DIY connection. Ensure the drain hose is looped high before connecting to prevent backflow.
Power
Dishwashers plug into a standard 10-amp power point under the bench. Ensure the powerpoint has adequate clearance and is on a circuit that meets current standards.
Do I Need a Plumber?
In Australia, any work that involves connecting or modifying pressurised water supply lines legally requires a licensed plumber. The drain hose connection is generally considered non-pressurised and can be done without a licence. If in doubt, use a plumber — it's typically a 30–60 minute job and costs $100–$200.
Steps for Connecting a Freestanding Dishwasher
- Position the dishwasher near the sink for water and drain access
- Connect the inlet hose to the water supply valve (plumber or existing DIY tap)
- Route the drain hose to the under-sink waste and secure it in a high loop
- Plug in the power cord
- Level the machine using the adjustable feet
- Run a short test cycle and check all connections for leaks
Oceania Appliances Can Help
When you purchase a washing machine or dishwasher from Oceania Appliances, we can arrange connection during delivery for most standard setups. Contact us to discuss your installation requirements when booking your delivery.