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Kanuemadgin

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Discussion starter · #1 ·
Hello everyone. I’m new as you may have noticed. However, I’m not exactly new to the site. I have came across this website several times and returned several other times to read threads. I have never registered or posted, but I have seen a lot of interesting topics and even gained some useful knowledge. I turn to you again to share as well as obtain. That being said:
I have seen many things, just as you, in my short 17 year career. I saw a friend of mine recently and he presented me with a ziploc back and asked me if I knew what it was. At first glance I thought it was tobacco. Further investigation proved differently. I wanted to post a picture but since I’m new I cannot. So I’ll have to improvise. The appearance is dark brown to black, texture is like like cottage cheese. It feels soft and spongy like a mushroom. At first the smell was strong but neither unpleasant or refreshing. Could it be some sort of fungus maybe? I have seen all sorts of mold and mildew but I have never actually seen black mold so I’m not sure. Where did this come from you ask? My friends mother went to clean her filters on her mini splits. She has two, one downstairs and one upstairs. When she removed the filter this stuff came falling out of it like dirt or sawdust. Mini-splits have excellent humidity control in cooling mode as long as the fan is set to auto. Low humidity greatly reduces the chance of any mold growth or survival. She does, in fact, keep her fan set to auto and the units are only about two years old. The downstairs unit was perfectly normal aside from normal dust and dirt accumulation. What could this be? Your thoughts and suggestions please?
 
Discussion starter · #6 ·
That is all related to construction features. The better it’s insulated and sealed, the less it takes to heat and cool. It’s difficult to go wrong with a good load calculation.
 
Discussion starter · #7 ·
I’ve definitely came across my share of dirty coils and blower wheels. I’ve removed several wheels and even cleaned them in place with small brushes I’ve seen some of the cleaning options you have mentioned. Some are pretty clever but I’ve always used heavy duty trash bags, a gallon jug (cut off bottom) and a piece of hose for a funnel and a 5 gallon bucket to catch water in. On conventional split systems I sometimes use a piece of sheet metal and a bucket to place underneath the coil to wash it out. I was more concerned with what the heck was inside this unit though but you gave some great cleaning ideas. Thanks.
 
Discussion starter · #10 ·
Kdean1. I believe so. I was just curious if anyone had ever saw this much debris come out of one. I was also worried about black mold. Since over half of mold is black, I wouldn’t know the bad stuff if I saw it.
 
Discussion starter · #11 ·
Justinjoyal, It actually gets occupied the most and is ran more than the downstairs unit. She has spray foam insulation with an ERV in the attic. Hell, even the interior walls have got R-11 insulation in them. Mini splits haven’t been popular very long so I assume we will all get to see some interesting stuff coming from them.
 
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