How to tell if AC is draining properly?

Determining whether your air conditioner is draining properly involves checking both the outdoor exit point and the indoor components of your HVAC system. First, go outside to the exterior wall where your PVC condensate drain pipe terminates; during a hot and humid summer day when your air conditioner runs regularly, you should see a steady drip or small stream of water flowing consistently from the pipe. Second, inspect the indoor air handler unit and check the transparent or accessible PVC drain lines and primary condensate pan to ensure they are completely clear of standing water, sludge, and debris. If your indoor floors and secondary overflow pans remain entirely dry, and your home feels comfortably low in humidity without the air conditioner short cycling or shutting down unexpectedly, your system's drainage network is operating efficiently and keeping condensation moving freely away from your living space without restrictions.