Yes, low coolant will cause it to overheat without the AC; that is not the only reason that will cause overheating however.
The air comes from the air outside and the air conditioning system in the car turns this into cold or warm air.
The 1939 Packard was the first car with a true air-conditioning system.
Under normal conditions a modern vehicle should not overheat when the air conditioning system is on. The first steps to investigating this condition are ensuring correct coolant level, condition, flow and thermostat actuation.
We are afraid to use the unit 24 hours because it might cause to overheat .What is really the cause of overheating?
Automotive air conditioning is the ac unit in your car. It's what "conditions" the air in your car, ie keeping the temperature inside the car cool or warm.
No use for exhaust in car air conditioning
Low coolantPlugged or restricted radiatorBad thermostatBad water pumpDefective radiator capSystem airbound
The purpose of the AC vent hose in a car's air conditioning system is to carry cold air from the air conditioning unit to the vents inside the car, allowing the cold air to be distributed throughout the interior of the vehicle.
Air flow. Check the electric fan, check the coolant, and might be time to replace the rad. Does it overheat at idle, and/or on the hi-way?
No cars "need" air conditioning. It is a personal preference of the owner. Most people would want air conditioning in their car as an option. Mississippi's hottest day was 115 degrees!
changes the air temperature inside