Why Is My Evaporative Cooling System Leaking Water? (And How to Fix It)
Suppose you’ve noticed water pooling around your evaporative cooler. In that case, you’re not alone—this is a common issue of leaking evaporative coolers (while turned off!) for Canberra homeowners, especially during our hot, dry summers. While evaporative cooling is an energy-efficient way to beat the heat, leaks can be frustrating (and messy!).
At Air Turners, we’ve seen this problem countless times, so let’s break down the most likely causes—and what you can do about them.
We don’t recommend any unlicensed persons try and fix their evaporative cooler. Below is for informational purposes only.
Please call me (Micheal) to discuss your evaporative cooler issues. 02 6294 4443
Common Reasons for Leaks (And Easy Fixes)
1. Clogged Drain Line or Overflow
Evaporative coolers rely on water flow to work properly. Over time, mineral buildup, dirt, or even algae can block the drain line or overflow outlet, forcing water to escape elsewhere.
✅ Fix: Check the drain line for blockages and flush it with a mix of water and vinegar. If the overflow tray is full, clean it out and ensure it’s draining properly.
2. Uneven or Poorly Sealed Water Distribution
If the water isn’t spreading evenly across the cooling pads, excess water can drip out the sides. This often happens if the distribution system is misaligned or the pads are worn.
✅ Fix: Inspect the water distribution tubes for cracks or blockages. Replace damaged cooling pads and adjust the system to ensure even water flow.
3. Pump Issues (Too Much or Too Little Water)
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A faulty or incorrectly set pump can send too much water into the unit, causing overflow and leaking water. Alternatively, a weak pump might not circulate water properly, leading to leaks at the base.
✅ Fix: Test the pump—if it’s not running smoothly, it may need cleaning or replacement. Adjust the float valve to the correct water level.
4. Damaged or Old Cooling Pads
Worn-out pads can’t absorb water efficiently, causing drips. If your pads are cracked or falling apart, it’s time for a swap.
✅ Fix: Replace cooling pads every 1-2 seasons (or sooner if you notice wear). High-quality pads improve cooling and prevent leaks.
5. Cracked Reservoir or Loose Connections
Over time, the water reservoir can develop cracks, or fittings can loosen, leading to slow leaks.
✅ Fix: Inspect the tank for damage and tighten any loose connections. If the reservoir is cracked, it may need professional repair or replacement.
When to Call the Pros
While some leaks are easy DIY fixes, others—like major cracks or electrical pump failures—are best left to experts. If you’ve tried the steps above and still see water where it shouldn’t be, Air Turners can help! Our team specializes in evaporative cooling repairs across Canberra, ensuring your system runs smoothly all summer.
📞 If you’re still reading then it’s likely you need a hand? Contact us today or phone 02 6294 4443 for fast, friendly service—we’ll keep your home cool and dry!
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