Q. Why is my ActronAir leaking water inside?

The most common cause is a blocked condensate drain that backs up and overflows the drain pan. A full or cracked pan, a failed condensate pump, or a frozen coil thawing can also cause it.

Is it normal for the outdoor unit to drip water?

A small amount of water at the outdoor unit can be normal condensation, especially in heating mode. Water dripping from the indoor unit is not normal and usually points to a drainage problem.

Can a dirty filter cause water to leak?

Indirectly, yes — a blocked filter restricts airflow, which can freeze the indoor coil; when it thaws, the extra water can overflow the drain. Check the filter first.

ActronAir Leaking Water? Here’s What’s Likely Going On

Water dripping from an indoor unit, or pooling near the outdoor unit, is a common ActronAir complaint — and because water and electronics don’t mix, it’s worth understanding quickly. Air conditioners produce condensation as a normal part of cooling, so a small amount of water at the outdoor unit can be normal. Water where it shouldn’t be — dripping inside, or overflowing a tray — usually points to a drainage problem. Here are the common causes.

Common causes of an indoor water leak

A blocked condensate drain — the most common cause. The drain line carries condensation away; when it clogs with dust, mould or debris, water backs up and overflows the drain pan.
A full or cracked drain pan — if the pan that catches condensation is blocked, displaced, or cracked, it overflows.
A faulty condensate pump — systems that pump condensate uphill rely on a drain pump; if it fails, water isn’t cleared and overflows.
A frozen indoor coil that’s thawing — if the coil has iced up (often from low airflow or low refrigerant) and then melts, it can dump more water than the drain can handle.
A blocked filter — indirectly, restricted airflow can cause the coil to freeze and then overflow on thaw.

What you can safely check

Turn the system off to stop adding water while you investigate.
Check and clean the filter — it’s a common contributor and safe to do.
Look for an obviously full drain pan or a clearly blocked external drain outlet.

Beyond that — clearing a blocked drain line properly, replacing a drain pump, or diagnosing a frozen coil — is work for a technician, who can clear the line, test the pump, and find out why the coil iced up in the first place.

ActronAir Drainage FAQs

Getting it fixed with genuine parts

If a drainage component needs replacing, we stock genuine ActronAir drain pumps, trays, hoses and connectors, with same-day dispatch on stocked items ordered before 1:00 PM AEST. See our Drainage range, or contact us with your model details and we’ll match the right part. Call 1300 904 554 or email actron@nationalacparts.com.au.

ARC licence holder? Enter your promo code and licence number at checkout for your ARC discount on spare parts.