My understanding is there has never been any proof that duct cleaner is
either good or bad. Personally I think it's not necessary in most cases and
you'd be better off investing in better heat/air exchange technology and
filter technology.

"Cory Lechner" wrote in message
...
We just had a company in to clean our house's warm and cold forced air
ducts, plus the furnace air system as well. Because it is hard to see if
they have cleaned all the duct/debris from the ductwork, it's tough to
judge
if it is indeed clean afterwards. They used a big suction hose to suck
out
the dust as they loosened it at each register with compressed air. They
also drilled three access holes to run a "skipper" into the cold air
return
system. The skipper was just a hose with a blunt air nozzle on the end,
which was fed into the ductwork through the drilled access holes. I'm not
totally convinced it as clean as we had hope for. Like I said before,
it's
tough to evaluate what you can't see.

Do some companies actually use a scrubbing system to clean the ducts?
Anyone have comments??

Cory
Regina, Sask.