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- Simple Programming - One program runs for the entire week (4 periods per day)
- Easy-To-Use - Basic operation keeps programming easy
- Works with heating and cooling systems
- Does not work with heat pump systems or electric baseboard heat (120-240V)
- Model Numbers - RTH221B1021
- 1-Year Warranty
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 1 year
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.com's 30-Day Return Policy.
- Read full return policy for details.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-332-1110
- Support Website
- View other products from Honeywell
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