A/C Diagnostics & Troubleshooting


It’s long been said that opinions are like smiles… everybody’s got one! And that’s certainly true when it comes to diagnosing and troubleshooting mobile A/C systems. Depending on whom you ask and the particulars of the system, you’ll get different answers from different technicians on just what approach to take in figuring out what’s wrong. Last month we visited 30+ year MACS member shop Iezzi’s Auto Service in Reading, PA, where along with general repair, they specialize in mobile air conditioning service. Third-generation millennial owner Tim Iezzi was kind enough to take a few hours out of his busy day to talk A/C with MACS. He also shared this photo, taken September 1960 when his grandfather Jerry opened up shop. Click here to read this feature.

Click here to download the June 2015 Issue of ACTION


About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues. www.macsw.org
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