- Replace 99% of all thermostats
- Works with virtually any furnace (heat pump, electric, gas, oil, hot air and hot water zoned systems)
- Heat pump compatible with or without auxilliary heat
- Environmentally safe - works without mercury
- Keeps track of your filter usage and alerts you to replace your filter
- Easy to program - Individual pay programming for each day of the week
- Special day programming feature for one additional day when needed
- Program lockout feature to prevent accidental changes to settings
- Allows for temporary temperature adjustments as needed
- Battery backup to preserve settings during a power failure
- Large LCD backlit screen

An additional identical thermostat is available in separate post without the packaging.