Should I hose out the condenser coils?

The condenser coils should be cleaned at least twice a year, by a trained maintenance professional. If you get water in the wrong place you could create serious damage to the condenser. You could even experience electrical shock if you are not careful.

Also, we once had a customer use a pressure washer on their condenser and smashed in all the fins of the coil. This minimized the heat transfer and the electric bills became outrageous.