Water Leaks from HVAC

Priority

Water dripping or pooling around indoor HVAC equipment.

AC systems remove humidity, producing condensate that must drain properly. Clogs are the most common cause of water leaks. However, frozen coils, failed pans, and pump issues also cause problems. Water damage can be significant if not addressed quickly, affecting ceilings, walls, and the HVAC equipment itself.

Symptoms to Look For

Water on floor around indoor unit
Water dripping from ceiling where equipment is located
Musty smell near HVAC equipment
Water stains on walls or ceiling
Condensate pan overflowing

Possible Causes

1Clogged condensate drain line
2Cracked or rusted drain pan
3Frozen coil melting and overflowing
4Improper installation or slope
5Failed condensate pump
6Air handler insulation failure
7High humidity overwhelming drainage

What You Can Check

Before calling for service, try these safe checks that may resolve simple issues:

Locate the source of water
Check if drain line is clogged at access point
Look for ice indicating frozen coil
Inspect visible drain pan
Check condensate pump if present

When to Call a Professional

Water damage potential makes this a priority issue. If clearing an accessible clog does not solve the problem, professional service identifies the source and prevents water damage to home and equipment.

Need HVAC service?

Call (650) 540-7205 or book online.

Prevention Tips

Include drain line in regular maintenance
Pour vinegar down drain periodically
Install overflow shutoff device
Address humidity issues
Ensure proper installation slope

Frequently Asked Questions

How do I unclog my AC drain line?

If accessible, use a wet/dry vacuum at the drain outlet, pour vinegar through the line, or use a small brush. Stubborn clogs may need professional clearing with specialized tools.

Can water damage my AC equipment?

Yes. Standing water can damage electrical components, rust pans and housings, and promote mold growth. Persistent leaks should be resolved promptly.

Why is my AC producing so much water?

AC units naturally produce condensate by removing humidity. High humidity increases condensate volume. Excessive water with drainage problems can indicate frozen coil or other issues.

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