Quote:
Originally Posted by black73
LOL! Dude got all the money in the world and comes here for free advice rather than pay a competent AC Tech.
Looks like way too much dirt in the duct. Check for air leaks under the house pulling the dirt into the duct. Never run without a filter and do not pull air from a crawlspace. You are breathing that shat! Oh, and get your coils cleaned.
Hope that helps. 
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I'm with you - I don't want to be messing with this stuff. But we have the following issues:
1) My wife doesn't want non-family in our house during a pandemic
2) This house is not in Los Angeles (located in a mountain town about 400 miles away), and the 'local talent' of HVAC people is not the same as it is in Los Angeles.
As for the dirt, this is the intake that leads to the FAU - the filter is inside the FAU, so basically if any of this stuff gets loose, it gets in the filter. The house was redone around 2001 or so - I suspect this is just normal 19+ years of dust accumulation. Here's a better picture - this is the same shot above, just taken about eight feet behind it:
-Wayne