Ac unit not putting out cold air, fan is workin, how much will it cost to add refrigerant.
The best thing to do in your situation would be to have an a/c performance test done.
This test will use a refrigerant recycling machine to test the high and low pressure sides of your a/c system to lead the mechanic in the right direction as to what the issue may be.
This machine can also draw the system into a deep vacuum to remove any moisture that may exist. After the system has been drawn into a vacuum, a vacuum hold test will be performed to test for leaks also.
If the system fails the vacuum test, the mechanic may then add a little bit of refrigerant to the system with some florescent dye. Once this die has circulated through the system, the mechanic can use a UV light and some UV glasses to search for traces of dye that would indicate a leak. After the leak has been located, the leaking part should be replaced. After this has been performed, the a/c machine will be able to fill the system back up with refrigerant.
It would be difficult to tell exactly how much this repair would cost, as I am unable to tell the exact source of the problem. However, if your a/c system is low on refrigerant, it is most likely due to a leak. A/C systems do not just lose refrigerant over time any more.
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