Rvac A/c System With Two Position "in-duct" Damper

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Does anyone have this system in their coach? This is what the original owner speced on our coach. It appears to be nothing more than a regular home A/C system. Besides taking up two bays there doesn't seem to be much to maintain, filters etc., cleaning the condenser, drains etc. it sure is quiet. Love to know what experiences anyone has had, service issues parts etc.

Thanks,

Bruce