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R-1234yf

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...
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Honeywell files EPA SNAP Application to Retrofit R-134a systems to R-1234yf

October 5, 2023

Honeywell has filed a SNAP application with the US EPA for approval to offer R-1234yf as a retrofit for R-134a. In 2022, the EPA received a SNAP application from Koura....
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European Chemicals Agency (ECHA) accepting comments on PFAS rules

September 13, 2023

The European Chemicals Agency (ECHA) continues to accept comments on the proposed use restrictions to thousands of chemicals commonly found in automotive and other applications related to PFAS. PFAS stands...
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EPA Set to Issue NPRM on AIM ACT Refrigerant Reclamation

September 7, 2023

The US EPA is set to issue a Notice of Proposed Rulemaking (NPRM) by September 30, 2023 in accordance with the requirements of the US AIM Act 42 USC 7675...
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Refrigerant Deja Vu (Part Deux)

May 30, 2023

By Richard Hawkins, MACS Technical Contributor This is the second of two articles about the transition from R-134a to R-1234yf refrigerant. Part 1: Refrigerant Deja Vu – May 8th The...
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Refrigerant Deja Vu

May 8, 2023

by Richard Hawkins, MACS Contributor Lots of changes since the 80’s If you have been associated with mobile Air Conditioning since the late 1980s, you have witnessed a lot of...
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EPA proposes GWP limit for five MVAC subsectors

December 22, 2022

By Steve Schaeber, MACS Technical Editor The mobile air conditioning industry has, so far, used R-1234yf refrigerant primarily in passenger vehicles and light duty trucks. Although MACS has reported on...
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Essentials in PHEV and BEV Thermal  Management

October 25, 2022

You can attend HVAC Hide and Seek for Electrified Vehicles: Essentials in PHEV and BEV Thermal  Management with Dave Hobbs at MACS 2023 Training Event and Trade Show. class on Thursday, February 2 from 9:45-11:15am and again from 2:45-4:15pm.
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TEXA joins MACS Trade Show

October 11, 2022

TEXA joins MACS Trade Show!  MACS Training Event and Trade Show will take place February 2-4, 2023, at the Gaylord Opryland Resort and Convention Center in Nashville, TN. TEXA joined MACS as a member in 2018 and is supporting MACS Training Event as a Silver Co-Sponsor of the Welcoming Reception at the Wildhorse Saloon in downtown Nashville.
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Visit ITWSexton at MACS 2023 Training Event

October 4, 2022

ITW Sexton has been a global leader in the design and manufacture of two-piece aerosol cans for over 60 years. With a variety of styles and sizes to choose from, ITW Sexton’s product line makes it easy to select the ideal solution for a wide range of standard and customized containers - from high-pressure, specialty gases to low-pressure consumer goods. Backed by the ITW family of companies, ITW Sexton is the preferred supplier of aerosol cans for customers that demand the highest level of safety and quality.
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Unlocking the compressor Lock up, PT. 2

August 30, 2022

I was driving the van home in the afternoon. It was about 45° F outside and the heater was on. It had been an uneventful 15 to 20 minutes’ drive at about 55 to 60 mph. Slowing down to make a 90 degree turn on to a different road, a faint grinding noise was heard. I rolled the window down and drove along at about 5 MPH and could hear the noise more distinctly. The next step was to pull over into a parking lot and leave the engine running and raise the hood.
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Do you know about the B1479 trouble code?

August 3, 2022

If you work on Toyota, Lexus and Scion A/C systems, chances are that you have encountered a B1479 diagnostic trouble code on a system that will not operate. 
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