What year did they switch to 134a Freon?
R-134a first began to see widespread usage in 1992 and took over the automotive market entirely in 1994. If you have a vehicle from 1994 or newer your air conditioning unit takes R-134a. It has been the standard automotive refrigerant for over twenty years.
When did auto AC change to R134a?
Until 1995, most cars with air conditioning used R-12 Freon refrigerant which has shown to have an environmental impact. R-12 is no longer used or produced in many countries and remaining quantities have skyrocketed in price. Since then, the industry standard has been R134a, which is an efficient replacement.
When did they switch from R12 to R134a?
Vehicles manufactured before 1994 used R12 for air conditioning. Vehicles older than 1994 started using R134A instead of R12. So what if you have a car that was made in 1994 or even earlier? Well, if you have a car that old, you have two options.
What is recommended while converting an R12 system to R134a?
A charge level between 75% and 85% is recommended when converting from R12 to R134a refrigerant. If no conversion information is provided, there is an easy formula to calculate the difference in charge level.
Why is 134a being phased out?
Why is 134a Being Phased Out? Unlike the CFCs and HCFCs of the past 134a does not contain Chlorine and does not damage the O-Zone layer. The worry with 134a is it’s Global Warming Potential, or GWP. GWP is a relative measure of how much heat a greenhouse gas traps in the atmosphere.
What kind of refrigerant does a Volvo 240 use?
The 1991 and later evaporator box under the dash was a different design as well and reportedly had a larger, more efficient evaporator coil. From 1991-92 the system changed to Orifice Tube type, but retained R12 refrigerant as in previous years. The 1993 models were changed to use R134a refrigerant.
What kind of AC does a 1984 Volvo 240 have?
Over the years I have done a lot of experiments on my 1984 242 AC. Some have responded fairly well, but none would seem to work like a real modern AC system is supposed to. Beginning in 2010 I made a serious attempt at using PROPANE as a refrigerant after a suggestion by another 240 owner I knew who had claimed to be successful.
When did the Volvo 240 get the accumulator?
Later 240s made from 1991 to 1993 got a more modern system that can be recognized by the big silver aluminum accumulator/drier near the right side firewall. These systems were a different design.
What kind of fittings does a Volvo 240 use?
All 240s used SAE fittings in their AC systems (with one exception). So this means that if you’re repairing or making any new hoses, you’ll need fittings with standard or SAE thread, not metric. There is ONE exception. The 1993 (one year only) 240 reportedly used an accumulator/drier with metric thread fittings.