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  1. #1
    Did a search but couldn't find any previous threads on this. Has anyone used either of these? They mist water on your AC condenser to increase efficiency, according to the manufacturers. It would seem like mineral buildup on the fins would occur. One manufacturer states to spray the fins with LimeAway periodically to remove this buildup.

  2. #2
    Join Date
    Jul 2004
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    322
    There have been a couple of discussions about these and the consensus of the pros is that it's not a good idea to spray water all over your condenser.

  3. #3
    Join Date
    Jul 2004
    Location
    Southern Alabama
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    448
    I believe lime-away is a caustic and thus will damage the copper tubing and aluminum fins of the coil.

    Don't bother with the water spray. You are asking for more trouble than it's worth.

  4. #4
    Join Date
    Jul 2006
    Location
    memphis
    Posts
    81

    I bought a cool-n-save in the spring

    At first I did'nt like it because of the nozzles spraing water too heavy. I then bought some different nozzles with a finer spray pattern and have been please since. No build up on coils and utility bill is down about 30%. The system does work, just has to be modified slightly. The water delivery system is also a great idea.

  5. #5
    Join Date
    Feb 2006
    Location
    Float'N Vally, MS
    Posts
    1,807
    Quote Originally Posted by ;957571
    Did a search but couldn't find any previous threads on this. Has anyone used either of these? They mist water on your AC condenser to increase efficiency, according to the manufacturers. It would seem like mineral buildup on the fins would occur. One manufacturer states to spray the fins with LimeAway periodically to remove this buildup.
    A few years ago the addon spray mister was popular here.

    That's until the units started to prematurely RUST!
    Life is too short, Behappy!
    TFMM

  6. #6
    Join Date
    Mar 2008
    Posts
    28

    Misting the condenser

    I too would be afraid to use a mister on a condensing unit. There almost certainly would be a problem with mineral build up, and I do not believe that Lime-Away would remove the minerals adequately.

    If the water sprayed onto the condenser were the condensate from the evaporator, it might be OK, but I don't know how effective it would be since the amount of condensate from the evaporater would be limited, especially in a dry climate. But at least it would be mineral free and unlikely to damage the condenser.

    Another possibility, which would work, would be to use an evaporative cooler to provide cooler air to the condenser. That would be especially effective in a dry climate. It's just a question of whether the cost of the evaporative cooler and its maintenance could be justified. Also, it would be difficult to implement on a condensing unit which takes air in on more than one side.

  7. #7
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,286
    Bottom line: an air cooled condenser isn't designed to have a continual mist of water sprayed on it while it is running.

    If OEM's thought it was a good idea, they'd include misters from the factory to get a few brownie points on the SEER scale.

    Even the one poster who bought one of these things had to modify it to make it work to his satisfaction.

    Reduce the heat load on the house...that's much more permanent and gratifying than silly little misters.

  8. #8
    Join Date
    Feb 2007
    Location
    out in the country
    Posts
    633
    Quote Originally Posted by rfisher7381 View Post
    Did a search but couldn't find any previous threads on this. Has anyone used either of these? They mist water on your AC condenser to increase efficiency, according to the manufacturers. It would seem like mineral buildup on the fins would occur. One manufacturer states to spray the fins with LimeAway periodically to remove this buildup.
    Do the search again type in cool-n-save look for a thread that is titled "HA HA HA HA check out this thing" I think you will find plenty of reading to keep you busy..... for a long time. I think the company that makes them has responded to that thread.
    I never let schooling interfere with my education... Mark Twain

  9. #9
    Join Date
    Mar 2008
    Location
    Central Maryland
    Posts
    246
    Quote Originally Posted by rfisher7381 View Post
    Did a search but couldn't find any previous threads on this. Has anyone used either of these?
    You want a cooling mister that really works, check this out:

    http://www.sprinkool-systems.com/

    -HF

  10. #10
    Join Date
    Aug 2007
    Location
    Atlanta, Ga
    Posts
    213
    I too have used a misting system with good results:

    http://www.plumbingsupply.com/misterscooldown.html

    The misters use <5 gallons per hour...coil temp is 8-10* cooler and condensor discharge temp is 35-40* lower, and amp load is reduced...

    No build up on the coils, but I clean them monthy during the summer...

    My irrigation system puts more water on my condensors than the misters and after 10 years of irrigation spraying on them without any buildup, I decided to give it a try....

    I have achieved longer run times using less KWH....

    But some parts of the country may have water that has a higher concentration of minerals, so beware...

    Have a friend who works for Trane...he said the reason they do not equip misters on residential system is due to the water use that it would create...

    Joe

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