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Evap Coil Cleaning?

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doglips View Drop Down
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    Posted: 24/January/2009 at 8:39pm

Please see my other post....seen some duct cleaning bills..property manger paid...and whined about....and I'm confused about what is considered coil "flushing".

 

When I clean an evap coil...reclaim r-22/410a...cut the lines..take it outside...spray and wash..put back in..braze leak check, vacuum system down...recharge with Freon....talking 2 hours work depending on how many corners I cut....and company I work for is not cheap to do this.

 
But the invoices I seen mention flushing evap coil...obvious from price...they do not mean pulling evap coil.....so what is considered flushing a coil??
 
I'm picturing a regular split system...IF IF IF Anyone knows a way to use a hose to wash down an evap coil in place without flooding the area I'm all ears and willing to learn...dead serious I really would love this..save me some serious time.
 
I've been playing with an old evap coil..using compressed air to blow out the coil after putting some coil cleaner on it...but it is way to messy...and I'm a slob :) ....
 
I'm not a big fan of the spray on..let self rinse coil cleaner...but willing to try new things...
 
Thanks all.


Edited by doglips - 24/January/2009 at 8:44pm
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duckcountry View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote duckcountry Quote  Post ReplyReply Direct Link To This Post Posted: 25/January/2009 at 11:12pm
you might dry for a board on HVAC possibly?  Cleaning ducts is a great way to affect indoor air quality.  You are talking about temperature controls and the mechanics of cleaning the coils and the resulting line item billing of a single invoice.  That just isn't our specialty here.   Good luck with finding the answers you seek.
Are you in a high paying business or are you just a self employed low paid grunt who thinks this business provides dignity?
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doglips View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote doglips Quote  Post ReplyReply Direct Link To This Post Posted: 26/January/2009 at 7:23pm
cool..thank you.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CCandmore Quote  Post ReplyReply Direct Link To This Post Posted: 27/January/2009 at 9:06am
"When I clean an evap coil...reclaim r-22/410a...cut the lines..take it outside...spray and wash..put back in..braze leak check, vacuum system down...recharge with Freon....talking 2 hours work depending on how many corners I cut....and company I work for is not cheap to do "
 
If you're doing all those steps, I hope you are charging accordingly.  In my experience, unless there is a freon leak or no other way to access the coils for cleaning pulling the coils isn't always neccessary.  Otherwise, after cutting electricity use a coil fin brush or stiff nylon brush to knock the heavy stuff off the fins.  Spray fins and coils with BBJ Power Coil Cleaner.  Rinse with water - depending on location, you might need to water rinse with a pump sprayer instead of hose and mop up a little bit.  There are other ways to clean coils/fins, but this is very effective, reasonably quick, and all that's usually needed for residential and many small commercial jobs.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LArugcleaning Quote  Post ReplyReply Direct Link To This Post Posted: 14/July/2010 at 10:32pm
This is a costly procedure which leads industry HVAC technician to prefer.
Such service involves significant expense, method using foam and spray that are the simpler procedure, cost low, no rinsing is necessary and coil looked nice.

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