Quote:
Originally Posted by tuccillo
I have seen the 50 lb limit and apparently that does apply - I did find language indicating that less than 50 lb systems are exempt. Residential systems are generally 5 tons or less - perhaps 20 lbs of refrigerant.
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There are lots of large residential systems, like apartment buildings and dormitories. The EPA website has separate regulations that apply to systems that have between 5 and 50 pounds. It also has a detailed Q&A section for technicians to ensure that they are in compliance. A typical house in The Villages has less than 10 pounds of refrigerant. Technicians who work on individual house systems need to be certified and they need to maintain records on the refrigerants that they add or remove. But, that is about the extent of the EPA requirements for those systems.