Clear the condensate drain line
In San Diego humidity, condensate lines clog with algae by late summer. 5-minute job.
What you'll learn
- Why algae plugs the drain line every San Diego summer
- Where to find the T-shaped cleanout on the white PVC line
- The distilled-vinegar flush that takes 30 minutes to work
- When the clog is deeper than DIY can reach
Step by step
- Find the white PVC drain line coming out of the air handler.
- Look for a T-shaped cleanout access with a cap on top.
- Pour 1 cup of distilled white vinegar in. Replace the cap.
- Wait 30 minutes. Check the outdoor drain end for flow.
- Repeat monthly during summer.
If water still backs up after flushing, the clog is deeper than a vinegar pour. A licensed tech may use a wet vac or a drain pump. Climate Pros SD refers that visit. We do not run the pump.
Rather have a pro handle it?
We match homeowners with licensed local HVAC pros across San Diego County. You reach us directly, not a national call center.
Keep learning.
Change your HVAC air filter
A plugged return filter is the first check when a San Diego AC feels weak, especially after a Santa Ana or a wildfire-smoke week.
Program your thermostat efficiently
The U.S. Department of Energy says a programmable schedule can cut heating and cooling use about 10 percent when you actually use the setbacks.
Clean your outdoor condenser
A dusty or salt-crusted condenser makes the compressor work harder. Coastal San Diego units need a hose rinse more often than inland ones.