Oct 25, 2018 - 05:44 AM
Yes, the 9233A4551 will work with a 48257C969. If your current thermostat operates a furnace currently, you will have to replace it with one that will support another heat source. Unless you have a zone control thermostat, which already has the function built in. In order to help you find the correct replacement thermostat, I would need to know the model number of your current thermostat.