Air conditioners are needed during the sweltering summer months. A common issue in the summer is water leaking from your air conditioner inside the house. This can lead to water damage and other problems. Here are the causes of your AC leaking water inside and step-by-step instructions on how to fix this issue.
Table of Contents
- Understanding the Causes of Air Conditioner Leaks
- Tools and Materials Needed
- Inspecting the Air Conditioner for Leaks
- Fixing a Clogged Condensate Drain Line
- Cleaning the Air Filter
- Checking the Condensate Pump
- Ensuring Proper Installation
- When to Call a Professional
1. Understanding the Causes of Air Conditioner Leaks
There are several reasons why an air conditioner might leak water inside the house. Some of the most common causes include:
- Clogged drain lines or clogged condensate drain line
- Air filter is dirty or clogged
- Malfunctioning condensate pump
- Improper installation
Understanding the cause of the leak is crucial to finding the right solution.
2. Tools and Materials Needed
Before you begin, gather the following tools and materials:
- Wet/dry vacuum
- Rags or towels
- Warm water and mild detergent
- A soft brush or sponge
- Air filter (if needed)
3. Inspecting the Air Conditioner for Leaks
Inspect your air conditioner to identify the source of the leak. Turn off the unit and unplug it from the wall. Examine the area around the unit and look for any obvious signs of water damage.
4. Fixing a Clogged Condensate Drain Line
One of the most common reasons for an air conditioner leaking water inside is a clogged condensate drain line. This line is responsible for carrying the condensed water away from the unit. Follow these steps to unclog the drain line.
- Locate the condensate drain line, which is usually a PVC pipe near the indoor unit.
- Use a wet/dry vacuum to suck out any debris and water from the drain line.
- Flush the line with warm water and mild detergent to remove any remaining debris.
- Reattach the drain line and make sure it’s properly connected.
Leaking Window AC indoors
(How to fix water leaky Air Conditioner)
5. Cleaning the Air Filter
A dirty air filter can cause the evaporator coil to freeze, resulting in water leaks. To clean or replace the air filter, follow these steps.
- Locate the air filter, typically found behind the return air grille or inside the indoor unit.
- Remove the filter and inspect it for dirt and debris.
- If the filter is reusable, clean it with warm water and mild detergent. If it’s disposable, replace it with a new one.
- Allow the filter to dry completely before reinstalling it.
6. Checking the Condensate Pump
If your air conditioner has a condensate pump, it might be malfunctioning and causing the water leak. To check the pump.
- Locate the condensate pump, usually found near the indoor unit.
- Inspect the pump for any visible damage or debris.
- Test the pump by pouring water into the reservoir. The pump should activate and remove the water.
- If the pump doesn’t work, you may need to replace it.
7. Ensuring Proper Installation
Improper installation can lead to water leaks. Some installation issues to look out for include.
- Incorrectly sized unit: An oversized or undersized air conditioner can cause excessive condensation and water leaks.
- Poorly sealed ducts: Leaky ducts can cause condensation and water leaks inside the house.
- Incorrectly installed drain pan: Make sure the drain pan is properly installed and not overflowing.
8. When to Call a Professional
If you’ve followed the steps above and your air conditioner is still leaking water inside, it’s time to call a professional HVAC technician. They can diagnose and fix any underlying issues that may be causing the leak.
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