Atwood-Hydro Flame Furnace Thermostat Replacement

I suggest you use the forum search feature - lots of threads on this subject with detail answers which suggest which model and how to wire to replace the old analog thermostats. It's an easy, inexpensive upgrade that many wish they had done earlier.

This thermostat will control the temperature and fan?

Any millivolt thermostat will work. Batteries will need to be replaced occasionally. We replace around clock switching for daylight savings time.
Like this
Non-programmable thermostat