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Started By
Message
A/C Gurus, Your Input Requested, Re: Indoor Coil
Posted on 9/7/24 at 10:22 am
Posted on 9/7/24 at 10:22 am
How often should the coil in the air handler be removed and chemically washed/cleaned?
4
Posted on 9/7/24 at 10:36 am to Craw Dawg
quote:
How often should the coil in the air handler be removed and chemically washed/cleaned?
should you need to remove your evaporator coils, especially for cleaning, from what I know. Be cautious about chemical cleaning because some may cause corrosion on any steel parts in the housing/frame. I would think if you are using the appropriate filter and don't have leaks on your intake plenum, your evaporator coil will rarely need cleaning
ETA: I am not an AC Guru, just know a little bit about it.
This post was edited on 9/7/24 at 10:37 am
Posted on 9/7/24 at 11:17 am to Craw Dawg
I’m voting never. Notice how your intake vents are always disgusting while your output vents are always perfectly clean? That’s the filter working. Coil washes itself with condensation also.
Only maintaining I do is slowly wash chlorine down the condensation lines every fall followed hours later by a good flush.
Only maintaining I do is slowly wash chlorine down the condensation lines every fall followed hours later by a good flush.
Posted on 9/7/24 at 11:43 am to Craw Dawg
When they get dirty.
Keeping the filter clean may prevent the need.
Keeping the filter clean may prevent the need.
Posted on 9/7/24 at 12:24 pm to Dallaswho
quote:
I’m voting never.
I’m in this camp…..Just insure you change return air filters regularly and there are no leaks on the return air side of the system that would by pass the filter. Sad to say the damn evap coils seem to develop leaks at 5 or 6 years and need to be replaced anyway. That might change for the better with the new 100% aluminum coils.
ETA: it’s possible a evap coil might have be removed and cleaned for a previously neglected system that’s clogged and significantly reducing air flow but not as “routine” maintenance item.
This post was edited on 9/7/24 at 12:43 pm
Posted on 9/7/24 at 12:42 pm to CrawDude
quote:
Sad to say the damn evap coils seem to develop leaks at 5 or 6 years and need to be replaced anyway.
Yeesh, the one I have is over 14 years old...
Posted on 9/7/24 at 1:34 pm to CrawDude
quote:
Sad to say the damn evap coils seem to develop leaks at 5 or 6 years and need to be replaced anyway
typically about a year after the warranty expires. you'd think the scientists that developed those would have realized that you put copper and aluminum and water together, corrosion will happen. seems like 1st year chemistry.
Posted on 9/7/24 at 1:39 pm to Craw Dawg
quote:
Yeesh, the one I have is over 14 years old...
You are the exception to rule, lol. I definitely would not remove a 14 year old coil for cleaning - I would be more afraid of damage to the coil from removal & re-install than any benefit from cleaning. And then if it did leak you’d blame it on the cleaning and not the fact it’s time was up anyway. Average life of a HVAC system in the Deep South is 13-15 years.
Posted on 9/7/24 at 1:43 pm to Craw Dawg
If a mobile home with pets, probably once a year. Mobile home air handlers have terrible filtration set ups unlike homes with attic units. I have rental mobile homes with tenants with dogs and I have to pump down units every summer and remove the evaporator coils due to lack of air flow causing ice formation. It sucks.
Posted on 9/7/24 at 2:01 pm to Jmcc64
quote:
typically about a year after the warranty expires. you'd think the scientists that developed those would have realized that you put copper and aluminum and water together, corrosion will happen. seems like 1st year chemistry.
Yep - two dissimlar metals, electrolysis, …… pin hole leaks, combined with larger and thinner metal coils needed to increase federally mandated SEER requirements, plus refrigerants that operate at much higher pressures than R-22, all in the name of energy efficiency & protecting the ozone layer….in combination, a recipe for evap coil leaks….. it’s hoped-expected 100% aluminum coils will improve that - I suppose only time will tell.
This post was edited on 9/7/24 at 4:52 pm
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