The Honeywell RTH221B is a basic low-cost digital thermostat that can be installed by the homeowner. One program runs for the entire week, allowing the user to set four separate temperatures throughout the day. This can save up to 33 percent on annual heating and cooling costs. Operation is handled through clearly labeled buttons and switches, and the limited options make it easier to find the setting required. This thermostat works with general heating and cooling systems, but does not work with heat pump systems or electric baseboards. A limited 1-year warranty guards against component failure.
- DIY install
- 1-7/8 sq in display
- Simple Programming
- Energy Savings
- Works with heating and cooling systems
- Does not work with heat pump systems or electric baseboard heat
- 1-Year Warranty