MACS Issues Reminder On Refrigerant Usage in Mobile A/C Service

MACS Issues Reminder On Refrigerant Usage in Mobile A/C Service

The 2011 mobile A/C service and repair season is approaching and the potential of increased cost of HFC-134a is a source of concern for the mobile A/C aftermarket. The concern is that market conditions will lead to improper refrigerant substitutions in mobile A/C systems.

The Mobile Air Conditioning Society (MACS) Worldwide strongly recommends the use of a refrigerant identifier during mobile A/C service to inform the technician of the chemical content of the refrigerant in a mobile A/C system and to verify the content and purity of refrigerant purchased in cylinders.

“MACS recommends always using a refrigerant identifier when performing service on a mobile A/C system,” explained Paul DeGuiseppi, MACS manager of service training. “The refrigerant identifier should conform to SAE standard J-1771. My primary rule when working with refrigerants is, verify and identify. Verify that what you think is in a refrigerant cylinder is actually what’s in it and identify what is in a vehicle system before you begin work on it. This practice will allow for a proper repair and prevent possible contamination of mobile A/C systems or service and repair equipment.”

Current market conditions require the service industry to be vigilant when servicing mobile A/C systems and follow the vehicle manufacturers’ service requirements. If non-OEM approved refrigerants are installed in HFC-134a systems, possible concerns include: system cooling performance; system reliability; material compatibility; chemical damage from blend refrigerants to system lubricant, seals and hoses; contamination with lubricants required for blend refrigerants; safety; and service facility contamination from other refrigerants and contamination of shop tools including charging and recovery/recycle equipment is possible.

Equipment that is certified to meet the SAE standards and the Clean Air Act to service CFC-12 or HFC-134a mobile A/C systems should not be used to recover or recharge a blend or other refrigerant due to contamination and possible damage to the equipment and other mobile A/C systems. For more information, visit the resources page on the MACS website at

You May Also Like

Standard Motor Products Expands Emission Control Program

SMP’s program features more than 3,500 parts, including EVAP, EGR and positive crankcase ventilation products.

Standard Motor Products, Inc. (SMP) announced it is expanding its Emission Control program, which includes evaporative emission control (EVAP), exhaust gas recirculation (EGR) and positive crankcase ventilation emission control systems.

Standard’s EVAP program features over 1,300 part numbers and includes Vapor Canister Purge Pumps, Vapor Canister Vent Hoses, Vapor Canister Purge Valve Hoses, Canister Vent Solenoids, Fuel Vapor Canisters, Canister Vent Valves, Canister Purge Valves, Fuel Vapor Leak Detection Pumps, Canister Purge Solenoids and more. Recently released Standard EVAP components include Vapor Canister Purge Pumps for more than 2 million General Motors SUVs, like the 2023-21 Chevrolet Trailblazer. Fuel Vapor Canisters have been added recently for the 2022-20 Ford Transit, 2023-19 Nissan Altima and more. Canister Purge Solenoids are new for Dodge and Jeep vehicles through 2024.

CAWA Accepting Applications for MPA Scholarship Awards

The deadline for submitting applications for the MPA Selwyn Joffe Awards is May 31.

Repairify Announces Executive Leadership Changes

The company has named Craig Edmonds as president of asTech among other executive appointments.

KYB Launches New Digital Catalog App

The updated app provides much more accurate part number recommendations, according to KYB.

PRT Launches 22 New Products on Complete Strut Assemblies

The new items come to expand the PRT portfolio in North American Market and represents more than 12 Million vehicles in new coverage.

Other Posts

BendPak to Debut Eight-Armed Car Lift Concept at NADA

Octa-Flex improves technician productivity, convenience and ergonomics, according to BendPak.

PRT Heavy Duty Presenting Innovations at HDAW ‘24

PRT is exhibiting a full line of shocks and air springs for heavy-duty applications.

RNR Tire Express Rides Franchise Momentum Into 2024 

The company said it had a year of growth, with the opening of 15 new franchise locations.

Transtar Industries Launches Remanned Transmission Products

The company provides a sustainable solution for transmission products and simplified complex vehicle repair.