I have a 2004 Gulfstream MH & it had a Dometric Thermostat. It was always very hard to keep the temp at a comfortable level. It would be too hot and then too cold. Read on the forum where several of the people used a Hunter 42995 thermostat and thought it to be much better. So went to Wal Mart and bought one for $19.98, then went to Radio Shack and bought a Sub min toggle switch SPST. Mounted it this morning and it looks so far to be much better. I will know better in about a week when I go camping over New Years. I will keep you updated on the results.