AC Drainage and Condensate Line Guide

Every AC produces water. Proper drainage prevents damage, mold, and shutdowns.

Why ACs Produce Water

Moisture condenses on cold coils. 1-5 gallons per day.

Drainage by AC Type

Window AC

Drains from rear pan. Must tilt backward.

Central / Mini-Split

PVC drain line to floor drain or exterior.

Portable AC

Auto-evaporative, gravity drain, or manual tank.

Clearing Clogged Drain

1. Turn off AC
2. Find drain access point
3. Pour 1 cup vinegar
4. Wait 30 min, flush
5. If clogged, use wet/dry vacuum

Preventing Problems

• Flush with vinegar every 3 months
• Keep drain area clear
• Install safety switch
• Insulate lines in unconditioned spaces