A/C Diagnostics & Troubleshooting
June 1, 2015
It’s long been said that opinions are like smiles… everybody’s got one! And that’s certainly true when it comes to diagnosing and troubleshooting mobile A/C systems. Depending on whom you...Read Article >
Are you using the right tool for your A/C job?
May 6, 2015
The annual MACS trade show, held in Orlando this year, may appear to have been just rows and rows of product displays. But a stroll-and-stop approach at manufacturers’ exhibits proved...Read Article >
What do you know about compressor clutches?
January 2, 2015
Compressor clutches, how they work, why they don’t The compressor clutch has been around since shortly after the first A/C systems were installed in vehicles in the late 1930s. While...Read Article >
Blower motor draw
September 17, 2014
By Steve Schaeber, MACS Technical Editor Recently, I posted to the MACS WordPress blog and covered a fuse issue on a 1999 Volkswagen Jetta. In response to my post, I...Read Article >
When you assign an A/C job to a non specialist
August 27, 2014
If your shop’s A/C specialist is busy and you want to get the diagnosis started, you can assign the preliminaries to any technician in the shop. Here is what GM...Read Article >
Service managers: are you asking the right questions?
August 25, 2014
Too many technicians fail to get all the information they really need when a car comes in with a “poor A/C performance” complaint. Okay, not all motorists are observant, but...Read Article >
Accurate refrigerant charge is essential
August 13, 2014
No automotive A/C refrigeration system is completely tight, and cooling performance can be marginal when the refrigerant charge is not correct. On today’s small capacity systems, that’s just a few...Read Article >
Hyundai installing dual-refrigerant compressor
July 31, 2014
By Steve Schaeber, MACS Technical Editor My uncle Joe recently purchased a 2014 Hyundai Sonata to use as his commuter car for getting back and forth to work. When he...Read Article >
Refrigerant Explained
March 21, 2014
by Jacques Gordon To anyone who has been following along, it looks more and more like the auto industry will never have one universal air conditioning refrigerant. That means we...Read Article >
Servicing refrigerant recovery/recycling machines
January 9, 2014
Do you have questions on how to service and repair your refrigerant recovery and recycling machine? You can have them answered on Friday, January 17, 2014 at the MACS Training...Read Article >
HVAC in Hybrid and Electric Vehicles
October 22, 2013
Hanging out in the hall after lunch at the MACS Training Event in New Orleans, a young tech approached Jack Rosebro, introduced himself as Ron and said, “Somebody told me...Read Article >
A Brief History of Refrigerant
September 20, 2013
There never has been and never will be just one In the mid 1750s, Ben Franklin experimented with using vacuum to evaporate liquid ether, and he recorded a significant temperature...Read Article >