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Off Road

Caveman to Mr. Cool

February 18, 2021

Over 300,000 years ago, modern man began walking the earth relying heavily on his five senses-- especially sight – to hunt, find joy, and avoid danger. In 1914, Garrett Morgan, who decided it was important to protect man’s eyes during hazardous situations, developed what we know today as ‘safety’ glasses.
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Proceeding with caution

November 6, 2020

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...
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What is MACS membership? Why should I join?

July 10, 2020

Membership in the Mobile  Air Conditioning Society (MACS) Worldwide means you pay a fee annually to receive all of our publications and  benefits, such as our Mobile A/C Diagnostics App,...
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Vehicle power management and HVAC

September 3, 2019

September/ October 2019 ACTION Magazine Vehicle power management and climate control In the case of many late model vehicles, there are more and more systems utilizing electrical power management strategies...
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All about truck and off road mobile A/C

July 1, 2019

So where do we go from here? That is the question.  There aren’t a whole lot of new things we can do with an air conditioning system to improve how...
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Do you know how to find coolant leaks?

February 28, 2019

Finding Coolant Leaks Some days, around this time of year, it feels like all we do is chase down coolant leaks. Maybe that has something to do with weather patterns...
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Installation and modification of A/C systems for US and imported vehicles

July 18, 2018

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...
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Spin-On Coolant Filters

July 6, 2018

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...
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The new world of HD and off-road equipment cooling

June 29, 2018

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...
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Section 609 important information

April 2, 2018

[youtube https://www.youtube.com/watch?v=gMyRUiQkou4] If you still have questions about Section 609 certification please review our list of frequently asked questions by clicking here.    
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