Split AC Water Leakage from Indoor Unit — Causes & Fix
Water dripping or flowing from the indoor unit of a split AC is common in Tamil Nadu, especially in high-humidity conditions. Most cases are a blocked condensate drain line — often resolved without a major repair.
Why Is Your Split AC Indoor Unit Leaking Water?
- Blocked condensate drain pipe — the most common cause. The drain pipe that carries condensate water outside gets blocked by algae, dust, and debris over time. Water backs up and overflows from the tray inside the unit.
- Dirty evaporator coil — when the coil gets very dusty, ice forms on it. When the ice melts (when the AC cycles off), water drips faster than the drain tray can handle.
- Low refrigerant gas — when refrigerant is low, the evaporator coil gets too cold and freezes over. The resulting ice melt causes excessive water dripping.
- Improper installation angle — the indoor unit must be tilted very slightly toward the drain side. If incorrectly installed horizontally, water pools in the tray and spills forward.
- Cracked or disconnected drain tray — the plastic tray under the evaporator coil can crack over time, causing water to drip directly downward.
What You Can Safely Check
- Check the air filter — remove and clean it. A heavily clogged filter causes the coil to ice over, which then melts and leaks. This is the most common easily-fixable cause.
- Check the drain pipe outlet outside — find where the drain pipe exits your wall and ensure it is not blocked or sitting in standing water. Pour a cup of water into the drain tray (if accessible) to see if it flows freely.
- Check if ice is forming on the indoor unit — if you see frost or ice on the unit itself, switch it off for 30–60 minutes and call a technician. The issue is likely a dirty coil or gas leak.
Do not place buckets and ignore an AC water leak — the leaked water can damage ceilings, walls, and electrical fittings below the unit. Have it repaired promptly.
Split AC Water Leakage Repair — Cost Guide (Tamil Nadu)
| Repair Type | Starting Price |
|---|---|
| Drain pipe cleaning / unblocking | ₹349 |
| Evaporator coil cleaning | ₹799 |
| Drain tray replacement | ₹599+ |
| Gas refill (if coil freezing) | ₹1,200+ |
| Reinstallation / angle correction | ₹999 |
| Visit / inspection charge | ₹200 |
How It Works
-
1
Call or WhatsApp
Tell us the appliance, issue, and your area.
-
2
Technician Visits
We inspect the unit and give an upfront quote.
-
3
Repair & Pay
Approve the quote, repair completed same-day, pay after.
What You Get With Every Repair
If the same issue recurs within 30 days of the repair, we'll fix it again at no extra visit charge.
-
Transparent Pricing
Visit charge, labour, and parts all confirmed before we start, no surprises.
-
24 of 22 Cities Covered
Local technicians across Tamil Nadu, not a call-center dispatch queue. See coverage →
-
Same-Day Service
Most repairs completed the same day, subject to parts availability.
-
All Major Brands
We service LG, Samsung, Daikin and more.
-
Independent Service
Not tied to any manufacturer's targets — we recommend what's actually best for you.
-
Easy Booking
Call or WhatsApp — get your visit confirmed in minutes, no app required.
Frequently Asked Questions
Why is water dripping from my split AC indoor unit?
The most common cause is a blocked condensate drain pipe. The drain line that carries water outside gets blocked by algae and dust, causing water to back up and overflow inside the unit.
Can I clear the AC drain pipe myself?
You can try pouring a cup of water into the drain tray to check if it flows freely. However, clearing a blocked drain line properly requires a wet-dry vacuum or pipe snake, and the technician will also clean the tray and check for other causes.
How much does fixing AC water leakage cost in Tamil Nadu?
Drain pipe cleaning starts from ₹349. If the coil needs cleaning or the drain tray needs replacement, the cost is higher. A ₹200 visit charge applies, charged even if you don't proceed with the repair.
Is AC water leakage dangerous?
The water itself is not dangerous but the damage it causes can be — water dripping onto walls, ceilings, or electrical fittings can cause mould, structural damage, and electrical hazards. Fix it promptly rather than using buckets as a temporary solution.
Troubleshooting Split AC Water Leakage
If you notice water dripping from your indoor unit, it is often due to a clogged drain pipe or a dirty drain pan. These components are responsible for collecting and removing the condensation generated during the cooling process. When dust, algae, or debris builds up, water overflows back into your room. If you are looking for a reliable AC repair service across Tamil Nadu to address these issues, our independent technicians provide transparent diagnostics and professional support for all major brands.
Drainage System Inspection Checklist
- Power Off: Always disconnect the main power supply to the AC before performing any maintenance to ensure safety.
- Locate the Drain Pipe: Find the PVC pipe exiting the indoor unit. Check the outlet end outside for any visible blockages or kinks.
- Clear the Obstruction: Use a wet-dry vacuum or a specialized drain cleaning tool to gently suction out debris from the pipe. Avoid using sharp metal objects that could puncture the pipe.
- Inspect the Drain Pan: Open the front panel of the indoor unit to access the drain pan located beneath the cooling coil.
- Clean and Flush: Remove any visible sludge or debris from the pan. Flush the pan with a small amount of water to ensure it flows freely toward the drain pipe.
- Test Flow: Once clear, run the AC for a few minutes to confirm that water is draining properly outside and no longer leaking from the unit.
| Service Item | Details |
|---|---|
| Drain Pipe Cleaning | Removal of algae and debris |
| Drain Pan Maintenance | Cleaning and flushing of the collection tray |
| Refrigerant Inspection | Checking for coil freezing issues |
Frequently Asked Questions
Why does my AC leak water only when it is humid?
High humidity levels increase the amount of condensation produced. If your drain pipe is partially blocked, the system may handle normal moisture levels but overflow when the humidity is high.
Can a refrigerant leak cause water dripping?
Yes. If the refrigerant level is low, the evaporator coil may freeze. When the AC turns off, this ice melts rapidly, causing the drain pan to overflow, which manifests as a water leak.
Is AC water leakage dangerous?
The water itself is not dangerous, but the damage it causes can be. Water dripping onto walls, ceilings, or electrical fittings can cause mould, structural damage, and electrical hazards. Fix it promptly rather than using buckets as a temporary solution.
If you are unable to resolve the blockage or suspect a more complex issue, our experienced technicians are ready to assist. We provide same-day service across Tamil Nadu to get your cooling system back in order. Contact us at 99520 78200 for professional assistance.
Get a Technician Today
Opens WhatsApp with your details pre-filled — we'll confirm your visit window directly. Trouble opening WhatsApp? Call us instead.