I guess I should have elaborated a little. I have the Coleman-Mach mechanical thermostat and wanted to replace it with the Coleman-Mach digital unit. The only reason is because I want a digital reading/ more precise control over temperature. I would like to keep things "factory", otherwise I would just grab a cheapy out of my truck to replace.
so, if I understand right I can do this, with no special mods to the main unit? Like I said, I do this for a living commercial and residential, it just didn't sound right when they said that I couldn't swap thermostats.