Coastal Climate Control is in Annapolis. You can stop on your way N if you want them to take a look at it.
I replaced the complete units, not sure about compatibility of parts with your other two units if you do replace it. That’s on my list of things to check this Summer.
That’s your call, Duane. They are pretty bulletproof and it might have some good years left in it. They’re expensive, heavy and bulky. I don’t think I’d want to carry a spare, but if you do change it out, I’d try to find a place for the old one if it’s compatible with the new controller, etc.
I’m of the “If it ain’t broke, don’t fix it” school. Others are more aggressive about replacing equipment as it starts to age.
St Michaels, MD