Before I started working in HVAC, I never even knew a duct needed to be cleaned.
After a few houses, I saw how no one else seems to know this either.
I videotaped 3 minutes of me cleaning the main supply line of a customer’s house. Once you get past the scary, horror-movie-like appearance of the red whip, you can see how it cleans:
The red whip stirs up the debris and the reverse nozzle on the compressed air blows the debris back to the industrial duty vacuum.
If you’ve never had your ducts cleaned, they probably look like this. I can fix that. (615) 306-0375
[youtube http://www.youtube.com/watch?v=9N-oJtihL5A?rel=0&w=480&h=360]