Thor Forums

[Beau388]

Assuming you do have an Airxcel A/C (Coleman) without a condensate pump here is why it may leak. Under the evaporator is a drip pan to collect the condensate water. There is a drain tube from the drip pan to the rear of the A/C where the is a catch basin. The condenser fan is clearanced so that any water in the catch basin is picked-up by the fan blades and blown into the condenser, there by increasing the A/C efficiency. The system only works if the A/C housing (not the coach) is level or tilted slightly rear down. Should the A/C be tilted to the side more than a degree or the rear up you will have problems on hot, humid days. Wind blowing from the rear of the A/C can also cause problems, as can a low pressure area across the drip pan due to improper installation (baffling).