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Keep Your Central A/C's Condensate Drain Flowing with These Tips

May 20, 2014 | Blog

Your air conditioner’s (A/C’s) condensate drain line channels water from condensation safely away from the system. If the drain line becomes obstructed, condensate can no longer flow away.  Ensuring that the condensate drain line stays free of clogs helps prevent odors, mildew, mold, and other problems humidity related or water damage. Follow these tips to keep your drain clear:

  • Clean or replace your HVAC filters regularly.
    When dirt and contaminants build up on your filters, particulate matter can start to build up on the evaporator coil. This material can then enter the A/C’s drain system, contributing to clogs.
  • Check your condensate drain.
    As well as looking out for clogs, check to make sure that the main drain line and emergency drain line are properly connected and installed. The pipe can be knocked out of alignment; check to see that it’s oriented the right way. Installing a safety tee can help — this device cuts power to your A/C if the drain isn’t working properly.
  • Flush the drain twice a year.
    Twice yearly, flush out the drain line to get rid of clogs. Some systems use pressurized water; others use compressed air.  If you have a maintenance agreement the service technician will flush the line with pressure on his maintenance checkups.
  • Flush the drain with an algae killer.
    Once a month, flush out your drain line with an algicide. You can buy commercial prepared mixtures, although simple household materials work very effectively. A quarter-cup of vinegar poured down the drain line will disrupt the algal growth that forms many clogs.
  • Have your system serviced yearly.
    An annual service performed by a properly licensed HVAC expert will in many cases catch blocked drains before they become an issue, as well as identifying other problems. Sometimes the cause of a blocked drain can be found elsewhere in the system.

CCAC, Inc. is proud to provide services throughout the Corpus Christi  area. For expert advice on keeping your A/C system in peak condition, or to find out more about our A/C, heating and other home comfort-related services, contact us today.

Our goal is to help educate our customers in Corpus Christi, Texas about energy and home comfort issues (specific to HVAC systems).  For more information about condensate drains and other HVAC topics, download our free Home Comfort Resource guide.

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