Category Archives: ACtion Magazine

Do you know your HVAC components?


  The first part of any good under-hood inspection should include a label check. The labels below provide us with refrigerant charge specifications to correlate to the OE specifications found in service information. Notice the specifications for the R-1234yf charge … Continue reading

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Installation and modification of A/C systems for US and imported vehicles


By Ward Atkinson Members have requested information regarding requirements that apply to vehicles produced by OEM vehicle manufacturers, commercial upfitters and independent A/C repair or service facilities that install or modify mobile A/C systems. All A/C refrigerants listed as acceptable, … Continue reading

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Spin-On Coolant Filters


By Chris Tyson, MACS Heavy Duty Contributor While rarely seen in automotive and light truck systems, engine coolant filters (sometimes called water filters) can be found on many over-the-road, heavy duty truck and off-road engine cooling system applications. While most … Continue reading

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The new world of HD and off-road equipment cooling


By Jerry Lemon, Lemco Mobile AC Consulting Welcome to the new world of HD and off-road air conditioning. There was a time, not that long ago, when the HVAC system in a piece of heavy equipment, or an over-the-road (OTR) … Continue reading

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Are you ready for A/C season?


This is the MACS blog site if you are looking for the MACS main website click here. Repair shops – one question: Are you prepared for A/C season 2018? Circle the right answer: YES – NO What do you mean … Continue reading

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The time for mandatory Section 609 recertification is now


The new refrigerant purchasing rules that took effect January 1, 2018 have had service shops, distributors and the MACS office in an uproar. At the MACS office, the faxes, emails, phone calls and mail deliveries never stop. Every technician wants … Continue reading

Posted in #1234yf, ACtion Magazine, Environmental Protection Agency, Mobile Air Conditioning, Uncategorized | Tagged , , , | Leave a comment

Tariffs: A two-edged sword


By Keith Leonard, Esquire. While not for the first (or the last) time in United States history, the current administration has announced the imposition of tariffs on imported steel and aluminum (though not as to steel and aluminum imported from … Continue reading

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The mobile A/C industry on display


The MACS trade show has always been something special among automotive service exhibitions.  It’s a place where you see parts, tools and equipment for mobile climate control and vehicle cooling systems that you won’t see elsewhere.  And you usually first … Continue reading

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Seeking yf


By Steve Schaeber, MACS Manager of Service Training MACS has been tracking refrigerant use by vehicle manufacturers for quite some time and, as expected for the 2018 model year, we have seen a few more manufacturers choose to change over … Continue reading

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Our struggle with compressor oil


January February 2018 ACTION Magazine One of the most troubling situations a shop technician faces is not being able to find critical service information needed to properly diagnose and repair a vehicle. This could be anything from torque specs and … Continue reading

Posted in #1234yf, ACtion Magazine, MACS Member, MACS Training Event, Mobile Air Conditioning, Refrigerants | Tagged , , , , , | Leave a comment