Brzix / Knowledge Center / AC leaking water indoors
❄️ Air-conditioning service

AC leaking water indoors — what to check first

Brzix · Updated 15 September 2026
Short answer: Switch the unit off if water is close to a socket, cable or electronics. The most common cause is a blocked or poorly installed condensate drain, but dirty filters, icing or an incorrect drain slope can also be responsible.

Do this first

What the symptom may indicate

What you noticeWhat should be checked
Drips immediatelyCondensate tray and trapped water
Leaks after running for a whileDrain, ice buildup and airflow
Water runs down the wallDrain-hose connection and slope
Poor cooling and leakingFilters or a fault requiring diagnosis

What not to do

Do not push wire deep into the drain or pour aggressive chemicals into the unit. Never open the electrical compartment while the AC is powered.

When to call a technician

If the leak returns after cleaning the filters and checking the accessible part of the hose, the system needs servicing. Send the model number and photos of both the indoor unit and outdoor drain.

Frequently asked questions

Can the AC keep running while it drips?

Not when water is close to electrical components, a socket or a cable.

Is cleaning the filters enough?

It can improve poor airflow, but it will not clear a blocked drain or repair a damaged tray.

Why is a newly installed AC leaking?

Possible causes include the wrong drain slope, a poor connection or an installation error. Tell the installer exactly when the leak appears.

Need a professional?

When Brzix launches, describe the fault, add photos and compare offers from available AC technicians.

Find an AC technician →