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Engine Cooling

UAC returns as a MACS Exhibitor

September 13, 2022

UAC is a family owned and operated company since 1988, from Mansfield, TX specializing in Temp Control and Engine Cooling products.
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Heat pump basics

March 2, 2022

An internal combustion engine (ICE) is relatively inefficient, using only about a third of the fuel's heat energy (BTUs). The rest of the heat energy is “wasted” in friction, cooling and exhaust heat losses. Yet, the ICE’s wastefulness benefits the vehicle's interior heating.
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The benefits of MAP-controlled thermostats

February 9, 2022

A customer driving a 2014 BMW 328i arrived at the college's 2nd-year electrical lab reporting his illuminated check engine light. The customer had no complaints other than the light. The vehicle had just over 82K miles showing on the odometer. A student (Phil) assigned to the BMW performed a review with a scan tool, and a single code (P0597 – Thermostat Heater Control Circuit Open) was present.
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Air contamination in an A/C system can ruin your day

February 2, 2022

I had a memorable encounter with air contamination in the mid 1990s.  I was conducting a lot of retrofit clinics at the time and had recently acquired a demo refrigerant identifier which I took to those clinics. At one clinic, there was a technician who was extremely interested in the refrigerant identifier.  
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Heater Insight

January 25, 2022

Recently, a customer brought in a 2006 Honda Insight with a heater that was blowing cold but had no other vehicle concerns. A local garage had informed the customer the head gasket had failed; however, the owner felt a second opinion was necessary.
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The pressure is on

April 19, 2021

By appearance, radiator caps seem to be a simple device. Yet, many technicians do not understand the cap’s real function
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Marks Air celebrates 50 years of mobile air success

March 16, 2021

MACS member Marks Air Inc. celebrates 50 years of being in business.
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Learn all about electric cooling fan analytics

March 1, 2021

Learn all about electric cooling fan analytics
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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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Cooling systems service

March 25, 2020

By Peter Orlando, MACS Technical Correspondent The Lubrication System Service –It seems routine, but it’s not!Have you ever heard someone say, “When it begins ticking, that’s when I know to...
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