We're planning to have air duct cleaning done soon, and I've read
through some advertisements and have more questions than answers.
#1. One guy claims that they use a 200HP "Monster Vac" - a unit on
the truck of a car that stays outside the house, and is thus "mess
free". They say that they're better than others because other
companies use hand-held or indoor vacuums that are not as powerful and
might leave some dust inside the house. Is that true?? Is the
outdoor, truck-powered unit better than indoor ones?
#2. This guy (with the Monster Vac) says that in order to access the
duct system from the outside, they need to create an "access door" or
an "access panel" (for an additional charge). Could anyone explain
what this is, please? How damaging is it to the house/duct system?
#3. They offer sanitizing for additional $40. Do you know what
chemicals they use? How effective is it? Will this solution be
spread around the air in the house once the AC is turned on?
#4. This same guy also told me that there is no such license for Air
Duct Cleaning (in Nassau County, NY, anyway), and since their company
only does Air Duct Cleaning, they are not licensed. He underlined
several times that it's not because they don't want to you can't get
one, but because there is no such license. He says that other
companies have licenses because they offer other services that require
licenses. But since this guy offers no other services, he's ok
without a license. IS THAT TRUE?
Thank you so much for your replies! I greatly appreciate your help!!