Can I tell if there is freon in the AC?

If it is a large unit, it should have two Schrader type valves where you hook up the gauges. Window AC and refrigerators usually have a pinched off copper tube. Scrap junkies often check by poking a hole, but getting caught can be a big fine.

If you're not sure, you probably shouldn't be monking around with it. A realease of refrigerant through the schrader valve core can have problems. Like you open it to let a little out and the core sticks, then in your panic, you try to stop it - and since it's attached to the liquid like, liquid refrigerant starts to escape, and now you've frost bit your fingers [ minis 40 degrees]. It's best just not to monkey and let someone who knows do it.

The only "right thing to do" is have a licensed technician check the units and recover the refrigerant if there is any present. The technician should then tag the units to indicate that they are free of refrigerant. This is required by federal law and penalties for venting freon into the atmosphere can be severe. The freon may have residual value, also. There has to be someone in the area who services such units. Call and ask

Any liquid freon in the unit would be at ambient temperature and under pressure. If the freon escapes and the pressure is no longer present, it will spew and boil violently and get extremely cold. It can be very dangerous, especially if there is a large quantity present. Do not risk messing with it, due to the danger and the legal issues.

Don Young

Thank you.

Thank you.

Clicked too soon. Thank you. I'll talk to the other guy, whose idea this was, and we'll do it right.