Service provided on 6/7/2005 - Bob from Guardian Heating and Cooling Service responded within the allotted time (12-6PM.) I thought they were prompt given the fact that it was a 90 degree day and they were able come on the same day as I called. The labor to go to a rooftop air conditioner unit was $109 (completed in about 45 minutes) and 2.5lbs. of the refrigerant/freon was $69.
Pros: same day appointment
Cons: no estimate given