[Our3231CK]

I'm looking to add a softstart to our rear A/C unit to try it out. How do I find out what model the Dometic A/C is without climbing up and removing the cover? We have a 2017 3820FK, is there a standard type A/C that was put on? the front or main A/C unit is a different size, so I'm thinking it's a different model and output? maybe 15K vs 13K ?? I have vertigo issues from a head injury and try to limit my climbing, the DW does't like me being up there :-)