SIGforum
How do I clean these AC coils?
July 24, 2019, 10:14 PM
Dallas239How do I clean these AC coils?
I know the coils need to be cleaned; there's gunk coming out of the nearby vents. So I watch a bunch of YouTube videos that make it look simple. I peel off the tape, scrape off the goo, remove the access panel, and

all I can see is the backside of the coil. Is there supposed to be a way to get to the other side, or am I out of luck?
"I've spoken of the shining city all my political life, but I don't know if I ever quite communicated what I saw when I said it. But in my mind it was a tall proud city built on rocks stronger than oceans, wind-swept, God-blessed, and teeming with people of all kinds living in harmony and peace, a city with free ports that hummed with commerce and creativity, and if there had to be city walls, the walls had doors and the doors were open to anyone with the will and the heart to get here." -- Ronald Reagan, Farewell Address, Jan. 11, 1989
Si vis pacem para bellum
There are none so blind as those who refuse to see.
Feeding Trolls Since 1995 July 24, 2019, 11:27 PM
darthfusterWelp, you might not want to know this but I have done the service you are asking about. On my furnace (which is identical to yours it appears) I have to disassemble the blower, burners and heat exchange unit to gain access to the inside of the A/C plenum. Then I use a shop vac tool I modified with flat brush agitators to clean it out. I do this once a year. It takes two hours start to finish. Amazing how much stuff gets in there even with frequent filter changes. The first time I did it, the plenum was packed with condensed dust bunnies from years of neglect by the previous homeowner. I actually had to use an angled metal comb device to scrape the debris out. They don't call me Dusty for nuthin' yo!
You’re a lying dog-faced pony soldier July 25, 2019, 02:39 AM
Excam_ManYou are not going to clean that coil without pulling it out or dismantling the furnace.
Neither of which, do I recommend for a DIY task.
Notes:
I dont see a drip leg on the gas line (If there is one, its before the shutoff and not after it).
No electrical disconnecting means.
And no condensate safety switch on the evaporator drain or one on the overflow pan.
July 25, 2019, 08:14 AM
Dallas239quote:
Originally posted by Excam_Man:
You are not going to clean that coil without pulling it out or dismantling the furnace.
Neither of which, do I recommend for a DIY task.
Notes:
I dont see a drip leg on the gas line (If there is one, its before the shutoff and not after it).
No electrical disconnecting means.
And no condensate safety switch on the evaporator drain or one on the overflow pan.
So a job for a pro then. Any idea what I should expect to pay, or is this not worth it? The unit is probably ten years old, but not certain.
There is a disconnect switch, but correct about no drip leg or overflow switch.
I knew this was an issue when we bought the house but assumed it wouldn't be a big deal...
"I've spoken of the shining city all my political life, but I don't know if I ever quite communicated what I saw when I said it. But in my mind it was a tall proud city built on rocks stronger than oceans, wind-swept, God-blessed, and teeming with people of all kinds living in harmony and peace, a city with free ports that hummed with commerce and creativity, and if there had to be city walls, the walls had doors and the doors were open to anyone with the will and the heart to get here." -- Ronald Reagan, Farewell Address, Jan. 11, 1989
Si vis pacem para bellum
There are none so blind as those who refuse to see.
Feeding Trolls Since 1995 July 25, 2019, 08:27 AM
darthfusterAround here that costs 325.00-ish
You’re a lying dog-faced pony soldier July 25, 2019, 11:56 AM
Ripleyquote:
Originally posted by darthfuster:
They don't call me Dusty for nuthin' yo!
Darthfuster - Dustfarter? I hope so, I love spoonerisms.

Set the controls for the heart of the Sun. July 25, 2019, 12:01 PM
darthfusterquote:
Originally posted by Ripley:
quote:
Originally posted by darthfuster:
They don't call me Dusty for nuthin' yo!
Darthfuster - Dustfarter? I hope so, I love spoonerisms.
The older I get, the more apropos that description. However Darthfuster is a variation on Fustercluck which was my identity on several other fora. I just decided to alter it at the last second.

But Dustfarter makes me lol.
You’re a lying dog-faced pony soldier July 25, 2019, 12:16 PM
OKCGenequote:
Originally posted by darthfuster:
quote:
Originally posted by Ripley:
quote:
Originally posted by darthfuster:
They don't call me Dusty for nuthin' yo!
Darthfuster - Dustfarter? I hope so, I love spoonerisms.
The older I get, the more apropos that description. However Darthfuster is a variation on Fustercluck which was my identity on several other fora. I just decided to alter it at the last second.

But Dustfarter makes me lol.
Really? I thought it was a twist on Fart Duster.
.
July 25, 2019, 01:25 PM
HRKThey make coil cleaner sprays you can get at home improvement stores, its not as good as having a company fully clean the unit by taking it out...
https://hvactraining101.com/ac-coil-cleaners/July 25, 2019, 01:35 PM
darthfusterquote:
Originally posted by OKCGene:
quote:
Originally posted by darthfuster:
quote:
Originally posted by Ripley:
quote:
Originally posted by darthfuster:
They don't call me Dusty for nuthin' yo!
Darthfuster - Dustfarter? I hope so, I love spoonerisms.
The older I get, the more apropos that description. However Darthfuster is a variation on Fustercluck which was my identity on several other fora. I just decided to alter it at the last second.

But Dustfarter makes me lol.
Really? I thought it was a twist on Fart Duster.
.
You know forensically it's pretty tough to dust for farts. Can't really dust for vomit either. That would be a frustrating job for sure.
You’re a lying dog-faced pony soldier July 25, 2019, 06:10 PM
OKCGene^^^^^^^ A Fart Duster is a person who strolls through a busy office and releases silent but awful odious emissions.
July 25, 2019, 06:46 PM
darthfusterWe call those 'crop dusters' lolol
You’re a lying dog-faced pony soldier July 25, 2019, 10:11 PM
Excam_Manquote:
Originally posted by HRK:
They make coil cleaner sprays you can get at home improvement stores, its not as good as having a company fully clean the unit by taking it out...
https://hvactraining101.com/ac-coil-cleaners/
Good luck with that, since you'd be applying it to the wrong side of a vertical coil.