Duct cleaning: Advise getting a good job?

 I called a few places with quotes, but how do I know if they will
provide a good service?   Some say it will take two men to do the job
in about 1hr and 15min.    An other said one person job that will take
1.5 hours or more.    We have a average size house with 13 registers
and 3 cold returns.   Any advise?   thanks

  I called a few places with quotes, but how do I know if they will
provide a good service?   Some say it will take two men to do the job
in about 1hr and 15min.    An other said one person job that will take
1.5 hours or more.    We have a average size house with 13 registers
and 3 cold returns.   Any advise?   thanks

p.s. they are using Power Vac

 

Google duct cleaning before you decide.

 
labicff@yahoo.com wrote:

Absolutely, positively, a total waste of money.

 
This doesn't sound right--there should be a return for every room?  All
cleaned, of course...