HFO-1234yf REFRIGERANT IS A FLAMMABLE GAS
Automobiles have been using refrigerant gases in their AC systems for decades. The refrigerant gases have generally been inert gases, such as Freon-12 and R-134. Recently, many auto manufacturers have started to use HFO-1234yf as the refrigerant gas in their AC systems. This gas is expensive, about $80/lb., and the recycling machine costs another $5000. The bigger issue is that it is a flammable gas. Flammable gases pose special hazards and dealers should take steps to address this concern.
BACKGROUND: Used Oil Filters may exhibit hazardous characteristics and hence are classified as hazardous waste in California. To encourage recycling of used oil filters, California DTSC adopted reduced handling requirements for drained used oil filters that are sent for recycling as scrap metal. Used oil filters must not be disposed in trash cans or at nonhazardous waste landfills. Legislation was enacted in 2004 (AB 2254, Aghazarian) that allowed spent fuel filters from automobiles be added to spent oil filters for disposal.