“And the battle over air conditioner refrigerants continues. The US EPA just issued another warning, “cautioning homeowners, manufacturers of propane-based refrigerants, home improvement contractors and air conditioning technicians of the safety hazards related to the use of propane in existing motor vehicle and home air conditioning systems.” Now the FBI has entered the battle, too.
A year ago I wrote about the use of hydrocarbon-based refrigerants being sold as substitutes for R-22, the dominant refrigerant of the past two decades that is being phased out to protect the ozone layer. Yes, propane and other hydrocarbons can work just fine as refrigerants for air conditioners.
The problem arises when they’re used in place of non-hydrocarbon based refrigerants like R-22. Hydrocarbons are flammable and can create hazards for HVAC service technicians who may not take proper precautions if they don’t know that a flammable refrigerant has been substituted for the nonflammable they expect to be in the system.
You can find plenty of the substitutes online, and you don’t even have to be a licensed HVAC contractor to buy them. Evidently the problem hasn’t gone away since I wrote about it last year. Hence the FBI’s involvement. They’re looking for homeowners and do-it-yourselfers who have gotten these flammable refrigerants into their air conditioners so they can go after the sellers.
The FBI lists several refrigerant names they’re focusing their investigation on:
- Super-Freeze 22a
- Super-Freeze 12a
- Super-Freeze 134a
- Enviro-Safe 22a
See the FBI’s page to learn more about their investigation or to complete their questionnaire if you’ve gotten any of the unapproved refrigerants in your air conditioner.”
by Allison Bailes on Thurs. July 24, 2014