Our rv neighbors purchased a new trailer last year and the 1 AC ran all the time. Living room comfortable but not the bedroom. It was prewired for a 2nd AC in the bedroom so they spent the $ and added one this year. Son did installation. She mentioned the above and when he checked the living room AC the baffles were not opened to allow air to get out of the AC and blow the air out like it should. ( not vented). After correcting that they now wonder if they even needed the 2nd AC ! She had called dealer and mfg several times to no avail, no one ever checked the AC even when they requested it when other work was being done. Check your unit you have first before modifying or adding a 2nd.
