AC blowing warm air

I used the A/C pro from Wally World cost around 32 dollars connected to the low pressure line read around 10 filled it up to around 30 the fist time I squeezed the trigger the clutch engaged. I told my father about the A/C not working he said to use A/C pro would be fine he is a retired Air Force and FAA mechanic . Is A/C pro really that bad? Then some mechanic a the dealer. My A/C light was solid fuse and relay where good just had warm air coming out driver’s vent.

 

You are better off using a proper set of gauges to read both high and low pressure and do a proper charge. Those AC Pro kits are dangerous and can cause more damage than you want to deal with.

If it was low then where did the refrigerant go?

There is a leak and you need to get repaired, refrigerant doesn't just disappear.