Condenser coil cleaning: rinsed from the inside out

What we did
Cleaned the condenser coil with water, from inside the cabinet as well as from the outside.
Rinsing a coil from the inside out carries the dirt back out the way it came in. Washing it only from the outside drives the same dirt deeper into the fins, and a coil in that state still cannot shed heat.
Service: AC and furnace tune-ups