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09Sep

MACS warmly welcomes Globus Electronics back to the MACS Trade Show from their native Brazil. Globus Electronics has been an active MACS member since 2009.

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09Sep

I have been in the transportation climate control industry for 30 years now and have had the good fortune to have learned from some of the best people in the industry. Although I specialize in the school and transit bus sector, all large systems pose the same certain challenges that require the use of proper equipment and tools to perform the repairs correctly.

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08Aug

MACS member Rob Bollinger discusses a 2015 Acura TLX blower motor issue and installation

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07Jul

I have encountered many tech calls where a technician had replaced an expansion valve because of a problem with an evaporator freezing up and was frustrated because that did not fix the problem.

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07Jul

Motor vehicles have become increasingly more complex over the last two decades to meet the ever-tightening emissions regulations and increased fuel economy requirements, as well as passenger comfort and safety.
This added complexity means technicians are flooded with additional data when diagnosing faults on vehicles. Below is a table outlining the difference between a modern vehicle and a vehicle from 20 years ago. This is only a high-level example to illustrate the differences

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02Feb

A large percentage of MACS members have refrigerant identifiers and use of them on vehicles that come into their shop for A/C service prior to beginning any service work is standard procedure.
However, there are a lot of non-MACS member shops who do not have identifiers and unfortunately are not aware of the potential issues which can be caused by refrigerant contamination.

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02Feb

Read all about it! MACS February 2022 digital issue of ACTION magazine is ready to view.

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01Jan

MACS is changing leadership. Elvis L. Hoffpauir, is stepping down at the end of January 2022 from his duties as MACS president and chief operating officer to enjoy retirement. Following a 42-year distinguished career at the Mobile Air Climate Systems Association (MACS), Elvis will transition to past president and association advisor.

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09Sep

Understanding and Troubleshooting data lines on heavy-duty trucks will be presented byLarry Turay of LETCO Enterprises. In Larry’s Saturday morning class, attendees will learn how components and subsystem inputs and outputs can influence HVAC operations. 

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09Sep

The MACS office has received some questions recently on fines for violation of Section 608 and 609 noncompliance. Here are some answers: EPA assesses penalties for violations on a case-by-case…

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