OCT 2010 - I had 3H air in Tampa, FL inspect my AC unit last year. I later found out that their techs work on commission - bad for the consumer. Tech told me that my AC system had *** in coils and needed 2 LBS of freon. They also wanted me to replace the coils for $1600 or the entire system - from a 3.5 ton to a 5 ton system - for $4000. All I would need is new condensor and air handler but existing duct work would be fine. Fortunately, I only paid for the service call plus 2 pounds of freon. Oct 2010 - I used a different company who performed a full inspection but found no leaks and no holes. I never told them of 3H air's findings until after their inspection. They were not surprised and familiar with other customer's similar experiences of being scammed and ripped-off by 3H. They said if a leak truly existed, I would have needed freon now; a year later. Moreover, the new company said that a 5 ton system would require a complete duct replacement or sweating would occur and lead to other severe complications. I am so glad I never took 3H on their offer.