Well, here we are. The third and final Part of the Everything Auto Automotive Air Conditioning Series. May has arrived and spring is in full bloom. The lovely weather has a way of making some of us feel nostalgic for old times, but that doesn’t mean your car’s A/C system should be suited to eras past. In fact, if you have a car manufactured prior to 1995 and want to rest easy knowing that your vehicle will keep you cool throughout the summer season, it may be time to consider a retrofit.
Between the late 1980s and early-to-mid 1990s under the regulatory guidance of the Environmental Protection Agency, vehicle manufacturers changed the type of refrigerant used in their A/C systems from R-12 to R-134A. Today, it is the standard refrigerant used in all new vehicles, and it will be until something even more environmentally friendly comes along.
To switch a car made for R-12 to R-134A, to retrofit it, is not as simple as recharging the A/C system with the new refrigerant. The two refrigerants have different chemical properties and require different lubricating oils to cool cars properly and without damaging the system components. What’s more, R-134A requires higher pressure from the compressor than R-12, and without a careful retrofit (including the addition of a high-pressure cutoff switch), the new refrigerant will likely break the compressor. The retrofitting process is different for every vehicle, even those whose manufacturers provide warrantied “retrofit kits” specific to the make and model.
Many classic-car drivers elect to retrofit their A/C systems to run on R-134A but the same number elect to continue using R-12 while it’s still available. Should you retrofit your classic car for R-134A? Consider these factors:
Environmental impact of R-12. New use of R-12 was originally eliminated because it is a chlorofluorocarbon (commonly known as a CFC), a type of greenhouse gas that was depleting the ozone layer. If you have any extreme convictions about its use in your vehicle, though it’s not likely that your car will do a great deal of damage, maybe you should go ahead with the retrofit.
Existing A/C problems. If components of your A/C system like the evaporator or condenser already need to be replaced, retrofitting the whole system makes sense.
Cost. Since the requirements for a retrofit are not one-size-fits-all, the cost of the service (including labor) can range anywhere from $100 to $800 dollars, depending on the complexity of your car’s needs.
Another thing to remember is that retrofitting a low-performing R-12 A/C system won’t necessarily enhance its cooling power. This is even truer if you go for a lower-cost retrofit option that only includes replacement of the refrigerant channels and not the mechanical components like the compressor and evaporator. If your system can’t keep up with the demands of R-134A, it is likely that A/C performance will decline even further after the retrofit.
Deciding whether or not to retrofit an old but well-loved A/C system can be tricky. Let American Pride’s ASE-certified automotive air conditioning experts help you weigh the costs and the benefits. Maybe you just need a few A/C repairs rather than a full retrofit.
Call, contact or stop in to any one of our three locations today for the knowledge and peace of mind you need. Have a great weekend!