With summer temperatures climbing in Upland, our air-conditioning systems are working overtime. While most homeowners are focused on keeping their homes cool, there is another issue to watch for: water damage caused by an AC leak.
During periods of extreme heat, air-conditioning systems run longer and produce more condensation. That moisture is normally collected and directed safely outside through a condensate drain line. However, when the line becomes clogged, or another part of the system fails, water can overflow into ceilings, walls, flooring, or nearby rooms.
Common Causes of AC Water Leaks
One of the most common causes is a clogged condensate drain line. Dust, dirt, algae, and debris can build up inside the line and prevent water from draining properly. Other possible causes include a damaged or overflowing drain pan, a dirty air filter, frozen evaporator coils, or a malfunctioning condensate pump.
AC units located in attics can be especially concerning because a small leak may go unnoticed until a water stain appears on the ceiling below. By that time, moisture may have already spread into insulation, drywall, or framing.
Warning Signs to Watch For
Homeowners should be mindful of:
- Water stains or discoloration on ceilings and walls
- Bubbling or peeling paint
- Damp flooring or carpet near the air handler
- A musty odor
- Water collecting in or around the drain pan
- Unexplained moisture near vents
- An AC system that is struggling to cool the home
If you notice any of these signs, do not ignore them. Water can travel farther than what is visible on the surface, especially through drywall, insulation, and flooring.
What to Do if You Discover an AC Leak
First, turn off the air-conditioning system to help prevent additional water from being produced. If water is near electrical fixtures, outlets, or wiring, avoid the affected area and contact a qualified professional.
Next, contact a licensed HVAC company to identify and repair the source of the leak. It is important to understand that repairing the AC and addressing the resulting water damage are two separate steps. The HVAC technician can correct the mechanical problem, but any wet building materials may still need to be professionally evaluated and dried.
A water damage restoration company can use specialized moisture-detection equipment to determine how far the water has traveled. Depending on the extent of the damage, the drying process may include water extraction, dehumidification, air movement, and ongoing moisture monitoring.
Prevention Can Make a Big Difference
Regular AC maintenance can help reduce the risk of an unexpected leak. Homeowners should replace air filters as recommended, schedule routine HVAC service, and periodically check the area around the unit and drain pan for signs of moisture.
If your AC system is located in the attic, consider installing a secondary drain pan and an automatic shutoff switch. These safety measures can help stop the system when excess water is detected, potentially preventing significant damage.
During an Upland summer, your AC may run nearly nonstop. A quick inspection today could help you avoid discovering a much larger water-damage problem tomorrow.
If you find an AC leak, act quickly. Stop the source, have the system repaired, and make sure all affected materials are thoroughly dried. Addressing moisture early can often reduce damage, cost, and disruption to your home.
Vanessa and Kenny Van Holland are the owners of Restoration 1 of Rancho Cucamonga, a family-owned emergency restoration company serving Upland and surrounding communities. Their certified team provides 24/7 water-damage restoration, emergency water extraction, structural drying, and fire and smoke damage cleanup. For assistance, call (909) 765-3581. Your emergency is our priority.
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