I'm an HVAC technician for a fairly large company. I've used it about 5 or 6 times since I bought it. This is a very nice and well made device. I've encountered evaporator coil leaks a few times and once with bad flair on a mini split. It has that silence delay so you have to scan the coils slowly. I like that you can choose the type of freon. It's still very new so we'll see how it holds up.
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