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Avoiding Expansion Valve Woes (Part 1)

March 21, 2023

By Richard Hawkins On March 2nd, an article was published in this blog covering a class that was held at the recent MACS Training Event and Trade Show.  The class...
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Training Event Tech Session Wrap up (Part 1)

March 2, 2023

By Richard Hawkins There were some great classes presented at the 2023 MACS Training Event and trade show held in Nashville, TN on February 2nd through February 4th.  Starting with...
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A Sure Sign Of A Restriction (Part Three)

February 28, 2023

By Richard Hawkins, MACS Technical Writer This is part three in a series of articles about restrictions in A/C systems. If you have not read the two previous articles, they...
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New Product Showcase Winners

February 23, 2023

Every year, MACS hosts a new product showcase in the Trade Show at the Annual Training Event. This year in Nashville, 18 companies displayed their new products in the showcase...
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A Sure Sign Of A Restriction (Continued)

February 16, 2023

By Richard Hawkins This is a continuation of the blog article published on January 24th.  If you have not already read that article, it can be referenced here: https://macsmobileairclimate.org/2023/01/24/a-sure-sign-of-a-restriction/ That...
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A Sure Sign Of A Restriction

January 24, 2023

By Richard Hawkins In the January 4th blog article, we covered a tech call that involved a customer who was experiencing an issue with the low side of an A/C...
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A Memorable Tech Call

January 4, 2023

by Richard Hawkins Happy New Year to everyone. Hope you all had a good holiday season. We will begin the year on something of a light note. I am sometimes...
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Too Many Compressors

December 20, 2022

The blog article published on November 8, 2022, focused on understanding the importance of knowing the precise location of service ports when faced with a challenging A/C diagnostic issue.  It...
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Understanding and Diagnosing A/C

November 14, 2022

In the Understanding and Diagnosing A/C class, you'll go beyond minimum requirements for recovery, evacuating, recharging, and recycling by offering real world examples in diagnosing and repairing A/C electrical, computer / BCMs, climate control and electronic components. Most of today’s vehicles come equipped with electronically controlled A/C systems.
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Selection of the Proper O-Ring for Your MAC Application

November 9, 2022

Did you know the selection of the proper O-ring for your MAC Application can have a major result on your A/C repair?
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The pressure readings

November 8, 2022

Sometimes when confronted with a challenging problem with an A/C system, the pressure readings might not seem to conform to the way the system is performing.  Also, pressure readings might indicate that a component needed to be replaced and after replacement the system did not perform any differently. 
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Interior Heating Evolution

November 1, 2022

In the last 120 years, automotive passenger heating has evolved dramatically from open carriage-type automobiles with little occupant protection from the elements to complex electric vehicle (EV) heating, ventilation, and air conditioning (HVAC) systems.
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