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Air Conditioning Best Service Practices Tried & Tested When your car or truck has an air conditioning problem and needs service, what should you do? If your A/C system only needs some refrigerant, you can probably recharge the a/c system yourself. But if you are having cooling problems, leaks or electronic control problems, you should probably seek out a repair facility that specializes in air conditioning service work. Our advice is to seek out a repair facility that is a member of MACS, the Mobile Air Conditioning Society. MACS is a non-profit trade association for repair shops that do air conditioning service work. MACS promotes training, education, professionalism, and most importantly "Best Practices" for servicing and repairing your vehicle's air conditioning system. Since 1991, MACS has assisted more than one million technicians to comply with 1990 Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the...

R-1234yf Refrigerant For Your Car Auto makers are slowly moving toward a new refrigerant for automotive air conditioning systems. The new refrigerant is R-1234yf (HFO-1234yf), and it will be phased in slowly over time starting with some 2014 model year vehicles. R-1234yf has cooling properties that are similar to R-134a, which has been used as an automotive refrigerant since it was introduced back in 1994 to 1995 to replace R-12. R-134a contains no CFCs, which are harmful to the Earth’s protective ozone layer, but it does retain heat well and has a relatively high Global Warming Potential (GWP) rating of 1410. IMPACT ON GLOBAL WARMING Automotive refrigerants that leak out of A/C systems contribute very little to the overall global warming problem, only about 0.14% according to scientific estimates. Even so, when you multiply the millions of vehicles that are AC-equipped times even a small amount of refrigerant leakage over time, the numbers can add up. Some would argue ...

Alternative Refrigerants For Your Vehicle  As R-12 continues to disappear, the price of R-12 refrigerant continues to rise. So what do you recharge an older air conditioning system with if R-12 is unavailable? DROP-IN ALTERNATIVES FOR R-12 REFRIGERANT? Though a number of alternative refrigerants are marketed as "drop-in" replacements for R-12, there is really no such thing as a true drop-in replacement. The reason why is because Federal law prohibits the topping off A/C systems with ANY refrigerant that is chemically different from what is already in the system, unless all of the old refrigerant is first removed so the system can be converted to the alternative refrigerant. There are, however, a number of alternative refrigerants that can be used in older vehicles with R-12 A/C systems, and most have been reviewed and approved by the EPA for retrofitting older R-12 A/C systems. Approved refrigerants must meet the EPA's SNAP (Significant New Alternatives P...

 Car's Air Conditioner Recharge Procedure LOW REFRIGERANT If your air conditioner is not cooling well because the system is low on refrigerant, recharging the system with refrigerant should restore normal operation. This can usually be done with a few cans of refrigerant and a simple service hose connection. A/C RECHARGING PRECAUTIONS First, wear safety glasses to protect your eyes. Also avoid skin contact with refrigerant. The chilling effect of spilled refrigerant can cause instant frostbite on bare skin or eyes! WHAT TYPE OF REFRIGERANT? Next, you need to figure out what type of refrigerant your vehicle requires: On 1995 and newer passenger cars and light trucks, the correct refrigerant is R134a. DO NOT use any other type of refrigerant. On most 1994 and older passenger cars and light trucks, the original refrigerant was R12. R12 is no longer available to do-it-yourselfers and is very expensive. When older vehicles with R12 A/C systems need refrigerant, th...

Car's Air Conditioning System Inspection & Checking You should check your car's A/C system BEFORE hot weather arrives to make sure it is working properly and blowing cold air. The following tips on how to check your car's air conditioning system has been provided by the  Mobile Air Conditioning Society (MACS) : Note: Always be extremely careful any time you are under the hood while the engine is running. Stay away from all rotating components with your hands, clothing, and hair, and always wear eye protection around a running engine.  1. With the engine running, does the compressor clutch engage when the A/C is switched on? If it does not, this usually indicates a low (or empty) refrigerant condition, or an electrical problem. Also, listen for rapid clicking or cycling noises at the compressor when the A/C is switched on. If this is happening, it could also indicate low refrigerant or some other problems. Have it checked by your service technician. (Note: Some A/C...

Car Ac not working Q: I turned my A/C on for the first time this year and found that it didn’t work. My local mechanic suggested air conditioner repair or recharge air conditioner.So i took it to the professional car Air Conditioner repair shop. Thinking it was just low in a refrigerant charge. The mechanic recharged the system and charged me $65, which I thought was high for the new refrigerant. After all you can buy the stuff in a do it yourself kit at BJ’s for $30. Less than 2 days later I turned my A/C on and guess what? It didn’t work! I went back to the garage and told them that the A/C had quit and wanted to know what kind of warranty they provide? The mechanic said that there was none. After Basic air conditioner troubleshooting, he said it can be air conditioner compressor issue.But to properly confirm the problem it will take some time.It can also be the    leak in system and that would require diagnosis to determine where the leak was and what ...