[elicash]

I was JUST researching whether air ducts should get cleaned from dust, and google results while mixed were mostly pretty good and gave a quality EPA page as result number one -- not a marketing blog. (Though the question and answer part of google was mixed with the number two question being answered by saying to have them cleaned every 2 to 3 years, which is crazy. Also, I think this crowd is savvier than most about knowing when a website is just marketing and when to ignore it.)

But reddit still had much better information than google overall explaining experiences and why you almost certainly don't need them cleaned minus the 3 reasons EPA mentions.