I have a Mermaid now and had them on other boats. They are great people to deal with. We have minor things happen when I'm not around and so the Admiral calls them up and they walk her through it over the phone. She learned where the reset button is and now she thinks she is an A/C mechanic.
I highly recommend their Condensator. It sucks the condensated water out of the air conditioner's pan and sends it overboard with the discharge water. Keeps your bilge nice and dry. Kinda pricey for what you are getting, but well worth it.
Cruising the Eastern U.S. Inland Waterways and Gulf Coast. Presently on the ICW in Louisiana and heading Back to Texas.