- Set one program for the entire week with four program periods per day including wake, leave, arrive and sleep
- Precise temperature control of +/- 0.5 degree Celsius
- Easy-to-read digital display with an intuitive interface for one-touch access to setpoint temperature
- Easy to install yourself and basic operation keeps programming simple
- COMPATIBLE WITH: heating, cooling and heat pumps without auxiliary heat options
- Does NOT work with electric baseboard heat (120-240 V), heat pumps with backup, or multi-stage heating/cooling
- Built-in battery change reminders
Honeywell RTH221B Series Thermostat With Digital Programming
$35.00 Original price was: $35.00.$24.50Current price is: $24.50.
- Quality You Can Trust
- Online customer care, always here for you.
- Experience the Best Quality
- The quality you expect, the service you deserve.

Honeywell RTH221B Series thermostat with 1-week programming is flexible to customize room temperatures according to your lifestyle. You can select a unique program for the entire week or up to 4 different periods per day. The digital display features Fahrenheit or Celsius temperature and 12- or 24-hour clock options. The temperature set point is retained in memory in the event of a power outage. Other features include permanent and temporary override capability and soft-touch keys. The thermostat is easy to install and comes with a 1-year limited warranty.
| Voltage(Volts) | 24 |
|---|---|
| Use with Volt Gas Fireplace 24V or 750mV | Yes |
| Program Type | 7-day |
| Remote Control Included | No |
| Safety Listing | CSA safety listing |
| Series Name | Honeywell Home 1 Week Programmable Thermostat |
| Shape | Rectangle |
| Single-Stage Cooling | Yes |
| Single-Stage Heating | Yes |
| Temperature Displayed | Current and setpoint/desired temperature |
| Temporary Vacation Override | Yes |
| Touch Screen Programming | No |
| Use with Electric Baseboard 120V-240V | No |
| Use with Floor/Wall Furnace 24V or 750mV | Yes |
| Use with Pellet Stove for mV Thermostats | Yes |
| Voice Controlled | No |
| Optional Battery-Free Operation | Yes |
| Warranty | 1-year limited |
| Wi-Fi Compatibility | No |
| Width(cm) | 12.065 |
| Width(in) | 4.75 |
| Width(mm) | 120.65 |
| Works with Amazon Alexa | No |
| Works with SmartThings | No |
| Works with Android | No |
| Works with Apple HomeKit | No |
| Works with iOS | No |
| Works with the Google Assistant | No |
| Wiring Type | 2-wire |
| Display Type | Digital |
| Program Periods per Day | 4 |
| Multi-Stage Heating | No |
| App Compatibility | No |
| Cooling Only | Yes |
| Auto System Change from Heat to Cool | No |
| Backlit Display | No |
| Batteries Included | No |
| Bluetooth Compatibility | No |
| Built-In Z-Wave | No |
| Compatible with Central Air Conditioning | Yes |
| Compatible with Heat Pump (No Aux.) | Yes |
| Compatible with Heat Pump (No EM) | Yes |
| Compatible with Heat Pump (With Aux.) | No |
| Compatible with Heat Pump (With EM) | No |
| Compatible with Hot Water | Yes |
| Compatible with Steam or Gravity | Yes |
| Compatible with Warm Air Furnace | Yes |
| Daylight Savings Time Ready | No |
| Multi-Stage Cooling | No |
| Depth(cm) | 2.54 |
| Depth(in) | 1 |
| Depth(mm) | 25.4 |
| Early-Start Comfort Function | No |
| File/Certification Number | N/A |
| Filter Monitor | No |
| Heating Only | Yes |
| Height(cm) | 8.89 |
| Height(in) | 3.5 |
| Height(mm) | 88.9 |
| High/Low Desired Temperature Limits | Yes |
| Hold Temperature Button | Yes |
| Hub Required | No |
| Type | Thermostat |
Be the first to review “Honeywell RTH221B Series Thermostat With Digital Programming” Cancel reply
Related products
Sale!
Sale!
Sale!
Sale!
Sale!
Sale!
Heating
Sale!
Sale!











Reviews
There are no reviews yet.