[Shop-talk] Cooling down an air conditioner

[Steve Hammatt, Mount Vernon WA USA]

GEnerally not a good idea.  All you’re ding spraying mineral filled 
water on the coil, which when the water dries, leaves behind a 
mineral (scale) build up.  Scale is one of the best insulators and 
will do nothing but inhibit the cooling.  If you say, but we have 
very soft water (i.e. little or no minerals), while that may be true, 
then you have a low pH water (acidic) and the coil fins will be soon 
eaten away.  No win, either way.
The best thing you can do is make absolutely sure that coils in your 
system are CLEAN.  Remove all dirt, fuzzies, leaves, obstructions, etc.
that can and will restrict the designed cooling.
Good luck.

Steve Hammatt
Mount Vernon WA USA
(27 years experience industrial/commercial water treatment)


From: Robert nogueira 
Sent: Monday, August 08, 2016 3:19 PM
To: Shop-talk 
Subject: [Shop-talk] Cooling down an air conditioner

I've got a window mounted A/C in my garage. It generally does a pretty good job of cooling it down but now that the daily high is over 100 (f) it is having a problem and is tripping the breaker after running a hour or so in mid afternoon ( unit gets full sun).

Question: would installing a fine water mist sprayer behind the evaporator coil easy the load on the compressor thus allowing it to continue to cool?
For the few weeks I have this problem it is not worth the cost of wiring and installing a larger unit.
Thanks for any thoughts

Bob Nogueira 
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