On 9/16/2011 2:58 PM, Oren wrote:
[Las Vegas]

"...What repairmen are seeing is missing refrigerant chemicals, which
Fernandez said should not happen in a sealed unit.

Videos on the Internet show how teens use a valve to access the
chemicals, called Chlorofluorocarbons, which are nothing short of
dangerous."

Video:

http://www.fox5vegas.com/story/15470540/tampered-air-conditioners-expose-a-dangerous-trend

Now companies are putting locks on the valves -- $100.00

Unfortunately this is old news. My buddy has a HVAC business and he
mentioned CFC huffing at least 10 years ago.