Advanced Cooling System Diagnosis


Recently a young tech recognized Donny Seyfer in a parts store and stopped to talk with him. Introducing himself as Ron, he congratulated Donny on his election as chairman of ASA national, then asked about the training class on cooling systems he’s scheduled to teach at this year’s MACS Convention. “I’ve heard about your class, and I’d like to know why I should attend it. How much is there to know about cooling systems, what will I learn that I’ll actually use when I go back to the shop? What do you do for 3 hours?”

Donny replied, “You know Ron, cooling systems have gone through so many changes in the last few years that most shops are feeling really behind and confused about which coolants to use and what services are truly effective on late model cars. I’ll cover all of that, and then we’ll use your new knowledge on some case studies to diagnose some difficult but common cooling system problems. That’s how you’ll remember it all Monday morning. And if your boss and co-workers plan to be at the Convention, be sure to bring them along, because what I hear at the end of class is ‘I sure wish my boss had heard all of that too.’”

Hot Heads: Advanced Cooling System Diagnosis, is just one of the training seminars that will be presented at the 2014 MACS Training Event and Trade Show in New Orleans, January 16 – 18. This is the biggest MACS training event of the year, focusing primarily on HVAC and engine cooling in passenger cars, heavy duty and off-road vehicles and hybrid/electric vehicles. But that’s not the entire program. Other presentations will focus on advanced diagnostic techniques, business/shop management, and updates on new regulations and technology. There will also be a Section 609 Technician Certification class that includes information on R-1234yf and concludes with the certification test. And we’ll present the results of the 2013 MACS Field Service Survey. If you arrive early enough, there’s the annual golf tournament on Wednesday at TPC Louisiana (, and the party continues that night at New Orleans’ Mid City Lanes Rock’n’Bowl (

The 34th annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Power UP  will take place January 16-18, 2014 at the Sheraton New Orleans. Donny Seyfer’s class is scheduled for Saturday morning. Go here to see the whole schedule and to register.

The Mobile Air Conditioning Society’s blog has been honored as the best business to business blog in the Automotive Aftermarket by the Automotive Communications Awards and the Car Care Council Women’s Board!

When having your mobile A/C system professionally serviced, insist on proper repair procedures and quality replacement parts. Insist on recovery and recycling so that refrigerant can be reused and not released into the atmosphere.

If you’re a service professional and not a MACS member yet, you should be, for more information.

You can E-mail us at . To locate a Mobile Air Conditioning Society member repair shop in your area. Click here  to find out more about your car’s mobile A/C and engine cooling system.


About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues.
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