By Paul DeGuisseppi, MACS manager of service training
Suspect you have a restricted (or partially restricted) receiver drier? You can find out by performing a simple test. Turn the A/C system on and allow a few minutes for it to stabilize.
Then, using an accurate contact thermometer, measure the temperatures of the drier’s inlet and outlet pipes as close to the drier as possible.
A difference of more than 10 degrees F between the readings indicates that the drier is internally restricted and needs to be replaced.
The Mobile Air Conditioning Society’s blog has been honored as the best business to business blog in the Automotive Aftermarket by the Automotive Communications Awards and the Car Care Council Women’s Board!
When having your mobile A/C system professionally serviced, insist on proper repair procedures and quality replacement parts. Insist on recovery and recycling so that refrigerant can be reused and not released into the atmosphere.
If you’re a service professional and not a MACS member yet, you should be, click here for more information.
You can E-mail us at firstname.lastname@example.org or visit to find a Mobile Air Conditioning Society member repair shop in your area. Click here to find out more about your car’s mobile A/C and engine cooling system.
The 34th annual Mobile Air Conditioning Society (MACS) Worldwide Training Conference and Trade Show, Be the Best of the Best will take place January 16-18 2014 at the Sheraton New Orleans.