Five Tips for Optimal Operation of Your Car’s Air Conditioning System


Temperatures over 90 degrees and high humidity can challenge your vehicle’s air conditioning system. Here are five easy tips from the Mobile Air Conditioning Society (MACS) Worldwide to keep you and your passengers cool on the road.

1. If possible, leave the windows down slightly on hot days to reduce heat build-up. An A/C system works by removing heat, so the cooler the interior is to start with, the easier and faster the A/C will do its job.

2. When you get in the car, open all the windows completely, or even open the doors, for a moment to vent the hot interior air quickly.

 3. When you first turn the A/C on, set the controls to MAX or REC and use highest blower speed. This moves the greatest volume of air and re-circulates it for even faster cool-down.  As soon as you are comfortable, switch the system to NORM or OUTSIDE or FRESH, and select a lower fan speed. The lower blower speed produces colder the air from the system.

4. Does your cool air have a bad odor, perhaps like “dirty socks” or a gym locker? Remember to set the system to the OUTSIDE air mode (not REC) frequently to help prevent or lessen this problem.

5. Automatic Temperature Control systems operate differently than manual systems. Read your owner’s manual to gain understanding of exactly how your system works.
With most automatic systems, the quickest cool-down comes by setting the temperature as low as it will go at first, then adjusting it later to occupant comfort.

The Mobile Air Conditioning Society (MACS) Worldwide wants everyone to get the most comfort from their vehicle’s air conditioning system and be able to recognize problems when they occur.

Air conditioning problems should diagnosed by a professional service facility with the proper tools, training, and certified technicians.

To learn more about your vehicle’s air conditioning system, visit the Mobile Air Conditioning Society (MACS) Worldwide website at www.macsw.org and www.epa.gov/ozone/title6/609

Contact: macsworldwide@macsw.org

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About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues. www.macsw.org
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One Response to Five Tips for Optimal Operation of Your Car’s Air Conditioning System

  1. Pingback: A/C Repair Metairie | New Orleans A/C Repair | A/C Service Gretna

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