If your ASSET brand split air conditioner is leaking water from the right side of the indoor unit, especially after cleaning the filters, the issue is most likely a blocked drain hole or small debris in the drain tray. This quick DIY guide will help you fix it in minutes without dismantling the entire unit.

Tools You Need

  • Small plastic straw or thin zip tie (non-metallic)
  • ½–1 liter clean water in a bottle or jug
  • Optional: Wet/dry vacuum or bicycle pump for the drain pipe
  • Small towel to catch drips

Step-by-Step Instructions

1. Turn Off the AC

Switch off the AC and unplug it for safety.

2. Remove the Filters

Open the front flap, slide out both mesh filters, and keep them aside.

3. Locate the Drain Tray

Look behind the filters at the bottom of the coil fins. You’ll see a narrow plastic tray running across the unit. On ASSET units, the drain hole is usually on the right side.

4. Flush the Tray

Pour a small cup of water evenly along the tray from left to right. If water doesn’t flow smoothly to the drain hole and outside, there’s a blockage.

5. Clear the Blockage

  • Inside method: Gently insert a straw or zip tie into the drain hole to remove dust or algae.
  • Outside method: Locate the drain pipe outlet and blow air into it or use a wet/dry vacuum to clear debris.

6. Test the Drainage

Pour water again into the tray. If it flows freely outside without pooling, the blockage is fixed.

7. Reassemble and Test

Put the filters back, close the front cover, plug in, and run the AC to confirm there are no leaks.

Extra Tip

ASSET AC models often experience drain blockages in humid weather due to their small drain holes. Cleaning the drain every 2–3 months can prevent most leaks.

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