Author Archives: macsworldwide

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

MACS offers two Section 609 online training opportunities in December


Two dates: Wednesday, Dec. 9th or Tuesday, Dec. 29th at 2pm (EST) The webinar will take approximately 90 minutes that includes live Q & A with the instructor. The webinar will be recorded to view at a later time.You will … Continue reading

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Safety Alert: Online Sales of Cool Penguin F-12


The United States Environmental Protection Agency (EPA) recently identified online sales of a product marketed as “Cool Penguin F-12” for use in motor vehicle air conditioners (MVACs). While the product appears to be marketed as CFC-12, some of the cans … Continue reading

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MACS 2021 Training Event: Learn about Behavioral Characteristics of Various Compressor Types


There is a multitude of compressor designs being used across the vehicle fleet, and even some certain models could be fitted with different compressors. That is why it is important for technicians to know their differences and how they operate. … Continue reading

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Celebrating the 30th anniversary of the clean air act


By Steve Schaeber, MACS manager of service training It was 2:30 in the afternoon on Friday, November 15, 1991. politicians and media met in the East Room at the White House to greet President George H. W. Bush just moments … Continue reading

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MACS 2021 Training Event: FRED Wears a Mask Advanced Data Bus Diagnostics


2020 was a tumultuous year but you may not know it also was the year F.R.E.D. (Frustrating Ridiculous Electronic Device) turned 40 years old! (GM’s ECM with UART began in 1980!) Unlike most of us when we hit the “big … Continue reading

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MACS 2021 Training Event: HVAC Technology, Diagnosis and Repair


Mobile air-conditioning systems design and operation has changed dramatically over the past 10-15 years. This can make diagnosing and repairing a modern air conditioning system especially difficult. Join Peter McArdle of Four Seasons for this class where he will explain … Continue reading

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Disinfecting of vehicles during COVID-19


By Ward Atkinson, MACS Technical Advisor, & Bill Hill, GM Retired Recent comments from government agencies on the COVID-19 virus issue indicate that even when a vaccine is available, our normal daily existence may not get back to normal before … Continue reading

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MACS 2021 Training Event: Cooling Fan Circuit Analytics with Peter Orlando


Light-duty and passenger car training at MACS 2021 Training Event and Trade Show will inclide Cooling Fan Circuit Analytics. What began decades ago as a mechanical fan attached to the water pump with and without a fan clutch, has evolved … Continue reading

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Proceeding with caution


As essential businesses, most of us have been up and running through the outset of the COVID-19 pandemic, continuing through today, eight months later. We have adapted to the new environment and continue to serve our customers with care, doing … Continue reading

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MACS 2021 Training Event: School Bus Air Conditioning Systems and Service


Jerry Lemon of Lemco Consulting will cover the basics of school bus air conditioning for most applications. Attendees will learn about performance requirements and basic system arrangements. Jerry will also cover some of the state required performance standards in place. … Continue reading

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