Others may jump in w/ much better info---so don't hang your head!
As far as confirming a A/C leak---the not so perfect, inexpensive, backyard way. Insure you do have some gas pressure (even adding 1-$8 sacrifice can of freon) Spray your fittings with soapy water (1/4 inch soap, the rest water in a spray bottle) Give it a minute watch for "bubbly foam"---More expensive than that is the old fashioned "Halide Light" (may be misspelled) This uses a burning propane flame, as freon gets sucked in thru a hose (sorta used like a stethoscope), the flame will turn green, you must stay on suspected areas a bit, for the hose to s. Uck---(this is how you get around the "automatic bad word censor", with harmless words, otherwise the word would come thru as: ****, and leave you scratching your head!)---The gas into the flame. It is tricky/ requires a "knack" using it, and low light conditions help a lot. Sorta got to have a feel for using it, still maybe $40-$70 for one.
Many A/C shops have electronic sniffers that may be faster. Maybe with a little tact, you might convince a sympathetic A/C man to sniff yours out, as a quick diagnosis, before you commit to repairs.
Like I said, someone here, will hopefully give you better info than me!
Just trying to get things going!
Wednesday, June 15th, 2011 AT 5:08 PM