Heating & CoolingEasy DIYBest in summer
Clear AC condensate drain line
A clogged drain line backs up and floods the pan — a top cause of ceiling stains.
How often
Once a year
Time needed
30 min
Typical cost
$0–$20
Helps avoid
~$700
How to do it
We've put together a search for current, well-rated walkthrough videos for this exact job.
Watch how-to videosCommon questions
How often should you clear ac condensate drain line?
Once a year. Best in summer.
How much does it cost to clear ac condensate drain line?
Typically $0 to $20 in parts and supplies. Skipping it risks roughly $700 in repair or replacement costs.
How long does it take?
About 30 min.
Can I clear ac condensate drain line myself?
Yes — this is a straightforward job for most homeowners with basic tools.
Which of these does your home actually need?
Answer a few questions about your home and HomeGuard builds your personalized maintenance schedule — the right tasks, at the right time of year, for your appliances and climate.
Build my free scheduleMore heating & cooling maintenance
Replace HVAC air filter
Every 3 months · 10 min
Annual HVAC professional tune-up
Once a year · 2 hrs (pro)
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Once a year · 30 min
Clean outdoor AC condenser
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Check thermostat batteries & schedule
Twice a year · 15 min