I called this number back. It is Perfect Service Heating and Air. They said they were out my way cleaning air ducts/units and would clean mine for half price. According to the BBB, they have a rating of "F" and I am on the Do Not Call List. When I told them these things, they told me they would remove my number from their call list.
 Sep 16th, 2010
Telemarketers no doubt...
Silent One
 Feb 21st, 2008