It’s still not blowing cold enough
July 6, 2022
This customer came in with this car (he provided the vehicle information) and said it isn't blowing cold enough and wants me to make it blow colder. He just recently bought it and this is the first “hot spell” we’ve had since he’s had it.Read Article >
It isn’t blowing cold enough
June 29, 2022
"It isn't blowing cold enough.” Most any auto repair shop that does A/C work will often hear customers say this phrase. It can be the result of any number of things that can be wrong with an A/C system. Often it is a case of common things such as, a low refrigerant charge, a refrigerant overcharge, contaminated refrigerant, a blend door issue, a cooling fan problem, or maybe a weak compressor.Read Article >
OEM oil capacity information
June 7, 2022
If you are installing an OEM replacement compressor in this example then it "should" contain 4.5 ounces of oil but if the compressor is not drained and the oil measured, the amount will not be known for sure. Also, if an aftermarket compressor is being installed, there is no standard that exists in the industry regarding the amount of oil that might be shipped in a replacement compressor. It might have no oil in it, a partial charge, or a full charge or even more than a full charge. To make matters worse, the OEM does not provide the total system capacity for this vehicle.Read Article >
Compressors 101
May 2, 2022
You are invited to attend a compressors 101 class I will be conducting next week at the MACS training facility in Lansdale, PA. The title of the class is Behavioral Characteristics of Various Compressor Types. It is happening live on Wednesday May 11 from 5:30 to 9:00pmRead Article >
Your A/C season supply list
April 20, 2022
Unfortunately, something that is often absent from these A/C shopping lists is vacuum pump oil, and multiple containers of it should be included.Read Article >
The desiccant myth
April 12, 2022
There is a myth that exists involving A/C service work and driers that seems to come up from time to time. I have encountered it when handling tech calls and have seen it come up in A/C forums. Read more to find out what it is.Read Article >
No drier replacement, no compressor warranty!
April 6, 2022
Compressor manufacturers and parts distributors are adamant about driers being replaced when one of their compressors are installed. No drier replacement, no compressor warranty!Read Article >
What is a receiver drier?
March 29, 2022
With A/C season just around the corner, this seems like a good time to provide some updated information on these units. NOTE: Receiver driers are sometimes called filter driers and accumulators are sometimes called accumulator driers.Read Article >
Sometimes it is user error
February 8, 2022
I encountered a situation in the early days of recovery/recycling machines when they had just been introduced. I had set up a machine about four months earlier when the customer purchased it. I went to great lengths to cover proper operation of the unit and the shop owner even attended a certification clinic I conducted.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 >
MACS changes leadership
January 31, 2022
MACS is changing leadership. Elvis L. Hoffpauir, is stepping down at the end of January 2022 from his duties as MACS president and chief operating officer to enjoy retirement. Following a 42-year distinguished career at the Mobile Air Climate Systems Association (MACS), Elvis will transition to past president and association advisor.Read Article >
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.Read Article >
