Recap: HD A/C Boot Camp
April 16, 2024
By: Alexa Murphy As the weekend winds down, we extend our heartfelt gratitude to Jerry Lemon and all those who joined us for our HD A/C Boot Camp. It was...Read Article >
Join MACS for HD A/C Boot Camp!
April 5, 2024
by: Alexa Murphy Membership, Events, & Marketing Assistant @ MACS Have you heard? MACS is going to be hosting an exclusive two-day boot camp live at the MACS headquarters! The...Read Article >
From the Service Archives – ACtion Magazine 2020
December 20, 2023
System Service Tips by Larry Turay, AAM, Contributing Editor Everyone has a set routine to follow during the service process when replacing failed components. Sometimes after we have done a...Read Article >
Yes, The Service Port Cap Really is the Primary A/C Seal!
September 19, 2023
For years, we have been told that the primary seal for the A/C service ports lies in the service port cap. Yet day after day, technicians let vehicles leave the...Read Article >
Learn how to make your team un-poachable
October 12, 2022
Learn how to make your team un-poachable is a business strategy class you can attend at MACS 2023 Training Event and Trade Show. Rick White of 180BIZ is a dynamic business leadership speaker.Read Article >
The ambient temperature differences
October 11, 2022
That hose is easy to get to, so I whipped it off of there and had the new one on probably in less than 3 minutes. The owner was standing there watching and thought I was finished when I tightened up the second connection. He said he was going to go up and pay and would be back to get the car and hit the road.Read Article >
Don’t overlook a diagnostic clue
September 13, 2022
When thinking about the topic of A/C diagnostic tools, a recovery, recycle, recharge machine (R/R/R machine) is not one of the first tools that comes to mind. It may not come to mind at all in the world of inexperienced technicians.Read Article >
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.Read Article >
Mysterious servicing issue in R-1234yf systems
August 11, 2021
Recently a 2017 R-1234yf Honda system, with 72,099 miles, encountering a loss of cooling (slow leak) over time would not pass the equipment charge procedure and the production amount could not be charged.Read Article >
Low refrigerant charge and the search for real data part 4
July 13, 2021
When we examined the pressure readings and vent temperature readings last week, there was nothing showing up that indicated any charge issues (even operating with the 25% undercharge).Read Article >
Low refrigerant charge and the search for real data
June 22, 2021
I had read about how low refrigerant charges could increase compressor operating temperatures and decrease the amount of oil flowing to compressors, but I had never been able to find results from any tests. After discussing this with MACS, we decided to do some testing to get some real data.Read Article >
Temperature testing detective work: The search for a diagnosis
May 25, 2021
Last week we closed our blog post with a discussion about an orifice tube system which had an evaporator outlet temperature that was about 20° warmer than the inlet. We mentioned that this could be an indication of a restricted orifice tube or a refrigerant undercharge. In applying this to diagnostics, it is important not only to understand what this represents, but also why.Read Article >
