Yes, you can use this thermostat with a dual energy system.Take a look at pages 22 and 23 in the installation manual at
http://customer.honeywell.com/techl... as they will give you detailed re-wiring instructions from old to new thermostat. You might also want to look at the Honeywell model # RTH8500D, this one has a few more options. I hope this helps.
answered 3 years, 7 months ago