Air is not efficient enough as a coolant
No. Freon is non-toxic, but one can suffocate from breathing Freon, just as one might suffocate from breathing carbon dioxide and not getting fresh air within 10-30 seconds, or so. Freon's lack of toxicity is precisely why it revolutionized refrigeration, particularly in the home, in the 1930s.
Air conditioners manufactured between 1970 and 2010 use Freon as a coolant. Freon is scheduled to be phased out of usage by 2020. Newer air conditioner models use a different type of coolant.
You need a vacuum pump, gauges and freon. Take it to someone who does this work. A refrigeration guy can do it.
Actually a refrigeration compressor is a component of an air conditioner. The refrigerant used in an air conditioner is called Freon. The compressor in an air conditioner evacuates the evaporator providing cooling to the air.
freon and oil
No. The sale of R-22 freon is restricted in the united states because if it's effects on the environment. The only people who are allowed to purchase R-22 freon are certified refrigeration and air conditioning technicians. If this is for your vehicles, you can buy a converter kit at any auto parts store. This will allow you to use R-134a to recharge your car's air conditioning.
According to the EPA website, there is a Freon Phase out taking place. Here is the Link for more info: http://www.epa.gov/Ozone/title6/phaseout/22phaseout.html
you use freon to cool your car and make the air conditioner work
freon and oil
No, freon does not leave a powder. It is a colorless, odorless gas commonly used in refrigeration systems. If you are observing a powdery substance around your refrigeration unit, it may be coming from another source.
Yes, refrigerators typically use a refrigerant called freon to cool the air inside the appliance.
"Freon" is a trademark name of the the DuPont Corporation for a series of CFC and HFC refrigerants manufactured and marketed by them - thus, it's only actually Freon if it's manufactured by them and marketed by that name. They all use some form of refrigerant, but not all of them use CFC or HFC refrigerants. There are refrigeration units which use straight ammonia, for example.