I ran a PVC line from my AC runoff so it would slowly drip into my garden, worked great. I never had to water my garden.

I set it up, so it would drip into a small bowl set right in the middle of my garden, and set some rocks in the bowl that would stick up out of the water. That made a small "pond" to attract beneficial insects, and the water would run over the top of the bowl and soak into the ground and spread through the garden.

One thing my heating and AC guy told me though, if you use a central air unit like me, where the runoff comes out of a pipe in your foundation, NEVER use a system that can allow that to back up and overflow if your line becomes blocked.

I avoided that by rigging the pvc line to "catch" the drip from the AC and divert it, but did not directly attach it to the pipe.