Your a/c is recharged through the low side service port with with the blue cap.
4 pounds
yes
Refer to your manual or call the manufacture for the proper information.
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.
16
How old is the tempstar.
Yes. It can be recycled and reused.
Well, if the unit was originally meant to be recharged with the old freon, a kit is needed to allow recharge with the new.
all freon goes in at same place. all freon goes thru the one pumponly the switch on controls diverts it between front and back
Excessive freon may cause the compressor to"slug" (Seize)
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.
It is possible low on freon.