Smart idea. I didnt realize how much water the A/C unit (inside evaporator coil) throws off from condensation until I had a leak last month. Wish my drainage was to the outside rather than down to the sewer pipes or I would do the same thing. Also if a clog develops can hook up a shop vac to the external drain and suck that crud right out to help prevent leaks too as maintenance.
Well, we did this by accident you might say. The copper tubing stopped up and was not able to get it unstopped, so we put a gizmo on it that drains it to a 5 gallon bucket which we change out Morning and evening.
I’d like to figure out a way to run it to the outside and hook it to a drip hose, but Hubby has no desire to do it, and he is the one who has to carry it out daily.