How to avoid A/C discomfort in car |
Regulating car A/C temperature

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Main causes of car A/C discomfort

Cars having no climate control system can still provide a comfortable A/C if you make sure to regulate the refrigerated air temperature.

Most drivers would simply turn the A/C on without any temperature regulation which could lead to discomfort in the vehicle especially at night in the absence of the heat of the sun.

A/C discomfort in cars is in general due to any of the below factors or to a combination of these:

Absence of pollen or cabin filter
No timely replacement of the A/C filter when fitted
No temperature regulation (see below how to regulate it)
Loss of efficiency due to refrigerant leaks
A/C grilles pointing directly to your chest or head
A/C recirculation mode kept on for too long
A/C recirculation mode kept off in traffic jams

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Rule No 1 for car A/C comfort: regulate the air temperature

Never turn on the A/C without regulating the pulsed air temperature by rotating the heater knob towards the red zone.

Always use the car heater to regulate the A/C temperature to make it comfortable.

You can add as much heat as needed, there is no conflict between the car A/C system which is based on a compressor and refrigerant and the car heater which is fed from the engine coolant circuit

Rule No 2 for car A/C comfort: proper use of the recirculation mode

The A/C recirculation mode in vehicles is wrongly used most of the time if not all the time by most drivers.

Use the car A/C recirculation mode when:

it's too hot outside to increase the A/C efficiency
you're driving in a traffic jam to avoid the bad smells and toxic gases from the vehicle in front of you

NEVER keep the car A/C recirculation mode on for more than an hour without ventilating the vehicle by either opening the windows for a minute or removing the recirculation mode for a few minutes.