On 1/28/2016 10:32 AM, Dave Smith wrote:

> move when the fan kicked in. The down side is that there seem to be a
> lot of duct cleaning businesses that try to sell you their service more
> often than it needs to be done, and some that claim that they did it for
> you in the past and it is due again, even though you have never done
> business with them.

When the guy was leaving my house after doing the ducts, he
said My company says it should be done every two years, while
shaking his head No, you don't. I laughed and said Maybe not
every two years but probably more than every 50 years. Right!

nancy