To know when an air conditioning unit (non-window unit) needs to be charged (needs freon), it will not cool properly or you can test it with the appropriate gauges (see related link below).
you add the refrigerant in your outside unit but still is going to circulate to your inside unit doing a complete loop
yes
Refrigerant is commonly added in the outside ac unit. The freon is filled through the low side ac port.
To buy ac Freon you need to be certified and to add ac Freon to central air conditioning unit is risky.The air conditioner filters are normally located in return duct grills or in the air handler. Read how to change air conditioner filters.
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.
Because they no longer use freon.
No, but the price has gone through the roof. It is very expensive to add freon to an AC today. I had problems with mine and finally ended up having to replace the unit and that was really expensive.
There are 2 ports covered by plastic caps (one high pressure, and one low pressure) you need to be careful when handling freon as it can cause freeze burns and even blindness if sprayed in your eyes. You need to know what you are doing or you can harm the ac unit or yourself.
By buying an AC charge hose and a can or 2 of R134a freon (depending on how much your car needs) Attach hose to the low pressure side & charge system. Do not overcharge, or you may destroy the AC system.
You add freon to the low side fitting,top front,on the ac compressor
16
How old is the tempstar.