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  1. #1
    Join Date
    Jan 2010
    Posts
    101

    Routine A/C Maintenance

    We've lived in our new home for about 5 years and the Armstrong A/C condensors have never been serviced. We live in the south so we've recently begun our A/C season.

    How often should the condensors be maintained? I'm probably going to find a contractor to check out the units but I don't know what they should do as part of the service call. What do you suggest be done to these units? I haven't noticed any problems with them so far. Should someone checkout the air handlers (furnaces)? Thanks.

  2. #2
    Join Date
    Feb 2011
    Location
    North East Ohio
    Posts
    769
    clean condenser coils with chemicals if it hasn't ever been done. check capacitors and contactor for pitting. Verify proper airflow before checking charge. check and record OD and indoor temp, SH and SC. If system is found to be low on gas, have them look for a leak, rather than just blindly putting in a "top off" It is not a bad idea to amp the blower motorto make sure all is well with it. This is what I do on a A/C maintainence call

  3. #3
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,614
    Quote Originally Posted by NCHeat View Post
    clean condenser coils with chemicals if it hasn't ever been done. check capacitors and contactor for pitting. Verify proper airflow before checking charge. check and record OD and indoor temp, SH and SC. If system is found to be low on gas, have them look for a leak, rather than just blindly putting in a "top off" It is not a bad idea to amp the blower motorto make sure all is well with it. This is what I do on a A/C maintainence call
    I agree except Armstrong coils have a coating that coil cleaners will damage I like to just hose them out or use a citrus based cleaner and water

  4. #4
    Join Date
    Apr 2011
    Location
    San Bernardino, CA
    Posts
    81
    simple green would also work good

  5. #5
    Join Date
    Mar 2007
    Location
    Myrtle Beach, SC
    Posts
    2,919
    Quote Originally Posted by catmanacman View Post
    I agree except Armstrong coils have a coating that coil cleaners will damage I like to just hose them out or use a citrus based cleaner and water
    I agree.
    Remember, Air Conditioning begins with AIR.

  6. #6
    Join Date
    Feb 2011
    Location
    North East Ohio
    Posts
    769
    Quote Originally Posted by catmanacman View Post
    I agree except Armstrong coils have a coating that coil cleaners will damage I like to just hose them out or use a citrus based cleaner and water
    Thanks Catmanacman
    That's good info. Could help me from really screwing something up

  7. #7
    Join Date
    Jan 2010
    Posts
    101
    Thanks guys. As luck would have it, one of my AC condensors died last night. Refrigerant line outside frozen over. Service tech coming out later today.

  8. #8
    Join Date
    Mar 2011
    Location
    Edna Bay, Alaska Highest concentration of black bears in the US
    Posts
    623
    Lineset froze=indoor coil iced =airflow problem, or low charge. Check your filter.

  9. #9
    Join Date
    Jan 2010
    Posts
    101
    Quote Originally Posted by Dr.phil View Post
    Lineset froze=indoor coil iced =airflow problem, or low charge. Check your filter.
    The problem was diagnosed as a bad furnace blower motor which had to be ordered.

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