I have a motorhome that uses a 12VDC thermostat to control the AC/Heatpump and the propane gas furnace. The thermostat is a real piece of juink. It overshoots, undershoots and generally is not very good. It is, however, an electronic unit. I would like to replace it. I found a nice Honeywell, RTH7400D which looks like it might work, but the Honeywell Tech Supports says that it's not rated for use on 12VDC. However, it can be made to run on internal batteries and it does have relay contact outputs. So, I would think ..... But, anyway, does anyone know of a good AC/Heatpump/gas furnace thermostat that could operate a 12VDC system? BTW, I would ask this in the RV News Groups, but I think it is too HVAC specific for those NGs. Thanks,
- posted
17 years ago