Residential Condensate Pumps

Find the right Condensate Pump for Split System air conditioners in our residential range, designed for installs where gravity drainage isn't possible. A Split System Condensate Pump lifts water from the indoor unit's drain tray to a suitable discharge point, so the indoor unit can go on an internal wall, below a window or well away from the nearest drain.

Choose compact mini pumps that fit inside the indoor unit or the pipe cover, or small reservoir pumps for floor-standing units. Many residential models run quietly and include a safety switch that stops the system if water starts to back up – an essential feature for any Split System Drain Pump.

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Choosing a Condensate Pump for Split System Installs

Start with the pump type. Mini pumps use a separate sensor in the drain tray and a slim pump body that hides inside the indoor unit, a pipe cover or the ceiling space, making them the usual choice for wall-hung splits. Reservoir pumps collect water in a small tank and suit floor-standing units or sites with more condensate. Next, check lift and distance: the pump must push water up to the highest point of the discharge line and along the full run, so allow a margin above the rated figures. Match the flow capacity to the unit's cooling output, and if the unit is going in a bedroom, compare noise levels. For larger or commercial systems, browse our full condensate pump range.

Installing a Split System Drain Pump

Mount the sensor or reservoir level with the drain tray outlet so water flows in freely, then route the discharge line to a legal drainage point with a steady fall after its highest point. Running the pump, hose and refrigerant pipes inside an air conditioner pipe cover keeps the install neat and protects the line set, and the same run often continues to an outdoor unit sitting on an air conditioner wall bracket. Wire the safety switch so the system shuts down on high water, and clean the tray, sensor and filter at each service.

FAQ of Residential Condensate Pumps

When do you need a condensate pump for split system air conditioners?

You need one whenever water can't drain away from the indoor unit by gravity. Common examples are units on internal walls, units mounted below the level of the nearest drain, and installs where the drain line would have to run uphill or over a long distance. The pump lifts the condensate to a suitable discharge point so it doesn't overflow the drain tray.

Where is a split system condensate pump installed?

Mini pumps are usually fitted with the sensor in or beside the drain tray and the pump body hidden inside the indoor unit, a pipe cover or the ceiling space. Reservoir pumps sit below the unit's drain outlet, often in a cupboard or behind a floor-standing unit. Always check the pump's lift and run-length ratings against the route of the discharge line.

What does the safety switch on a condensate pump do?

The safety (alarm) switch detects when water is rising because the pump has failed or the discharge line is blocked. When wired into the air conditioner, it stops the unit from producing more condensate, which helps prevent water leaking onto walls, ceilings and floors. In Australia, connections to 240V power should be made by a licensed electrician.

How do I maintain a split system drain pump?

Clean the indoor unit's drain tray, the pump sensor or reservoir, and any inlet filter during each service, as slime and dust are the most common cause of blockages and noise. Check that the discharge line isn't kinked or crushed, and test the safety switch by triggering a high-water condition. A pump that runs constantly or cycles loudly usually needs cleaning or replacing.

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