Never, an air conditioner is a closed system. If you need to add refrigerant you have a leak that needs to be repaired. In theory you should never have to add freon. but there can be some residual loss. maybe after five to ten years.
Never, unless you have a leak.
yes
yes but you need to how much freon if may not be cost effective. Plus you need to know if it is the same type of freon.
You will need to connect your Freon bottle to the low pressure port on your 2002 Chevy Cavalier air conditioning compressor. Release the Freon into the compressor. A Freon recharge kit will come with everything you need and instructions.
The amount of Freon you will need to recharge your air conditioning system is dependent upon how low the Freon level is. You should begin with a one pound bottle of Freon.
134a
Low freon you need to recharge
When your air conditioning isn't cold
In the automotive industry freon is used in the air conditioning system. You need to take your vehicle to a shop if the system needs to be recharged.
No need to.
If your referring to the cooling portion of your central air conditioning the answer is no.
NO! You would never put propane in an air conditioning system! For air conditioning to work it needs FREON. Depending on your car you need to find out what kind of freon it requires, as well.