A/C performance issue
August 16, 2016
The part exists, sort of. The 2001 Dodge Caravan minivan with Automatic Temperature Control had poor rear A/C cooling performance and the technician decides (correctly) the issue is with the...Read Article >
A fleet for field work: servicing specialty equipment
August 2, 2016
By Stephen Petit, Siefkes/Petit Communications In heavy-duty A/C work, the service vehicle is essentially a shop on wheels — it’s vital for reaching equipment that operates virtually around the clock...Read Article >
Repeat blower motor issue
July 25, 2016
By Steve Schaeber, MACS Technical Editor An old boss of mine used to have a saying that goes something like: I ain’t got time to be doing the same thing...Read Article >
Change is coming to heavy duty refrigerants
July 18, 2016
By Steve Schaeber, MACS manager of service training Last year around this time the US Environmental Protection Agency (EPA) finalized Rule # 20, which was a Change of Status Rule...Read Article >
Servicing heavy duty truck, off-road and specialty vehicle A/C
July 14, 2016
By Robert Brocx The heavy duty truck, off-road work machine and specialty vehicle mobile air conditioning (HD MAC) industry has typically utilized air conditioning standards, procedures and technologies developed by...Read Article >
Where have all the “leakers” gone?
June 28, 2016
By Ward Atkinson, MACS Technical Advisor It has been said that back in the days of R-12, A/C system engineers sometimes used “Band Aid” fixes to address A/C system issues....Read Article >
Regulating recharge
June 23, 2016
By Steve Schaeber, MACS manager of service training Summertime is here, and that means many shops are feeling the full heat of A/C season. With temperatures rising, customers seeking cool...Read Article >
Make sure to check for TSBs!
May 9, 2016
By Steve Schaeber, MACS Manager of Service Training When we teach A/C classes there are a few basic phrases we use on a regular basis to cover ourselves that act...Read Article >
Are you equipped with the right tools for mobile A/C repair?
May 2, 2016
View the May 2016 issue of award-winning MACS ACTION magazineRead Article >
No, you cannot put R-134a into a HFO-1234yf system; here’s why…
April 26, 2016
We have received some questions about putting R-134a into HFO-1234yf system and here’s why you should not do that from EPA. From the 2015 EPA SNAP Final Rule: For vehicles...Read Article >
R-1234yf and other trends
April 20, 2016
By Elvis L. Hoffpauir, MACS President and Chief Operating Officer There’s no one better to talk to members of the service industry about R-1234yf than the folks at Fiat Chrysler...Read Article >
HFO-1234yf : Specific safety procedures
March 24, 2016
Many technicians have questions regarding the new refrigerant HFO-1234yf. The best way to answer your questions is to take the Section 609 certification test using the new program updated...Read Article >