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The proper term is actually refrigerant - Freon is a specific brand name trademarked by DuPont for a series of CFC and HFC refrigerants - thus, an AC system only has Freon if it has the product manufactured by DuPont. Answering your question, yes, an outside AC unit uses refrigerant, although it's normally not the same type used in automotive AC systems.
R-134A. DuPont was the originator of this refrigerant (not Freon) and they called it Suva 134A.
It a word, no. Without a leak, the freon level in your unit should stay the same for years and years.
First, "Freon" is a registered trademark of DuPont that refers to CFC refrigerants they produced just as SUVA is also a trademark of newer classes of refrigerant. It is refrigerant, and what type is in the unit. Assume it is "Freon 22" If your system is a window unit or package unit, the amount should be weighed in according to the data plate. I have seen homeowners charged for several pounds more than the system is rated for. If the charge needs adjusted, then there is a leak. Let
Most home systems use R-22 refrigerant. R-410a, known as PURON, is also an increasingly used refrigerant. If you see a pink sticker on the outdoor unit, it will say on the tag with the model and serial numbers r22 or 410a. "Freon" is a trademark of DuPont, and is NOT the real name of refrigerant. "Freon" was R12 and is no longer made.
overcharging a central air unit system with refrigerant(freon) will cause the head pressure to be?
You can find a Freon leak in a home Ac unit by using a leak detector. These instruments are capable of detecting trace amounts of Freon and pinpoint leaks.
yes
The refrigerant (freon) in any air conditioner should last the life of the unit. If not, you have a leak.
A General Electric dehumidifier uses a sealed unit that does not have any way for you to add Freon to the unit. If you want to add Freon, you have to first install saddle valves to the dehumidifier.
RV refrigerators do not use freon but rather ammonia. The ammonia is in a sealed unit called the cooling unit and you cannot add ammonia to this unit. If it goes bad it has to be replaced.
Well, if the unit was originally meant to be recharged with the old freon, a kit is needed to allow recharge with the new.