I had a questions about refrigerant . I wanted to know is how it works does it last forever unless you have a leak or over the years does it get lower and lower? So is it normal for a car to get low on freon? Thanks
The refrigerant does not "wear out" - but it does leak.
It is virtually impossible to seal a system in a vehicle as well as they are in a home appliance. There is a rotating shaft seal on the front of a compressor, several feet of rubber hose, and many joints sealed with rubber seals.
Over time any MVAC system will lose some refrigerant. I believe the allowable leak spec for just the service valves adds up to a half ounce per year. Eventually your system will be too low on refrigerant to work properly - even if the car was parked.
"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.
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