I dont understand what you mean by "the whole unit". There are many parts, including the service port, that are replaceable, but you still need to evacuate the refrigerant to change any one of them
Not without conversion.
It a word, no. Without a leak, the freon level in your unit should stay the same for years and years.
Not without some specialized equipment. Any good A/C repair shop can remove the Freon, replace the switch, and install the same Freon again, thus loosing none.
First of all if the system is low or empty of freon, you have a leak. Replacing the freon without repairing the leak would be a waste of money not to mention allowing the freon to escape into the atmosphere. It would be best to take it to a garage and have a professional do the job for you.
a ford fusion does not have freon it has 134r take it to a mechanic
How do you add freon to a 1999 Honda Passport
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.
You take it to a shop. Personal posession of freon in the US is illegal.
There is no freon in a home sprinkler system.
You will definitely lose all of your Freon when you replace the high pressure switch. Once the high pressure switch is loosen the Freon will begin to access the system.
Freon is odorless, but it is possible to smell the refrigerant oil that could also be leaking.
No.