If you are only getting warm air out of the airducts with the AC turned on, it may be time for more freon. Also, if you hear a growling noise from the compressor when accelerating, that is also an indication of low freon.
Freon may need to be added when the ac is not blowing cold enough. A Freon gauge can tell you for sure if the pressure is low.
I use a lime green crayon. If you need to get it out of your AC, you will need a freon reclamation machine that can bleed it out safely.
you need to put the freon in the low side, should be the smallest cap on the ac system
R134a
ding freon will make it colder, only if freon is low. if freon is low you have a freon leak so adding will be wasting time and money. more likely to need a new ac temp thermostat, which is no big deal to change
You'll need a pressure gauge and know how to use it. The gauge will tell you when you have the right amount in.
A machine that reclaims Freon is needed to remove the old Freon. The system will then need to have a vacuum pulled, and then the new Freon can be added.
you need freon.
You need gauges to repair AC.
Not wanting to allow the freon to escape into the atmosphere, you would need a garage equipped with an AC recovery system to recover the freon for you.
Most likely. You just need add Freon. Real easy an cheap fix. If your Freon is full and your AC still not working. Probably gonna be your AC pump. That's not a cheap fix.
The freon has to be removed and the pressure released from the ac system. Then the valve can be removed and replaced. The system will need to have a vacuum pulled and freon put in again.