Water drips from the AC inside

2018 travel trailer, 13,500 BTU non-ducted rooftop AC. 30A shore

Customer says: Water drips out of the ceiling unit onto the dinette, but only after the AC has run for an hour or so.

Dry outside today. Ceiling panel has a water stain around the AC shroud.

Tests you can run

• Ask when it drips: running, or in the rain
• Check the roof gasket and bolt torque
• Pull the shroud and look at the condensate pan and drain holes
• Water test the roof around the unit with a hose
• Check the filter and the divider between return and supply
• Replace the roof gasket

Repair options

The lesson behind this case

• Roof sealant and membranes

Keep going on air conditioning

Learn it

• Rooftop AC
• Capacitors
• Airflow and coils
• Thermostats and AC control boards
• Heat pumps and heat strips

Prove it

• AC hums and trips
• AC runs but barely cools
• AC ices up and barely blows
• AC kicks off on hot afternoons
• AC does nothing, thermostat is blank

See it in 3D

• Rooftop AC 3D wiring model

On the job

• Air conditioner
• Thermostat
• Heat pump / heat strip