Honeywell TH8321U1006 Premier White® Universal Programmable Thermostat with Dehumidification Control, Automatic/Manual Changeove and up to 3 Heat/2 Cool Stages

- Item #: BCI1839835

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Premier White® Universal Programmable Thermostat with Dehumidification Control, Automatic/Manual Changeover and up to 3 Heat/2 Cool Stages


  • Large, Clear Display with Backlighting current temperature, set temperature and time are easy-to-read and all are displayed on the home screen.
  • Menu Driven Programming Guides you through the scheduling process, showing only necessary information and choices on each screen.
  • Ability to Select Multiple Days allows you to easily customize the thermostat for your unique schedule.
  • Real-Time Clock keeps time during power failure; automatically updates for daylight saving time.
  • Armchair Programming allows you to remove thermostat from wall to set the schedule.
  • Precise Temperature Control (+/-1 F) reliable, consistent comfort.
  • Multiple HOLD options allow you to modify schedule indefinitely or for a specific time.
  • Change Reminders reminds you to service or replace the air filter, humidifier pad, ultraviolet lamp or thermostat batteries.
  • Adaptive Intelligent Recovery™ - ensures programmed temperature is reached by programmed time.
  • Temperature range stops - prevents user from setting the temperature too high or too low.
  • Keypad lockout options for partial or full lockout.


  • Programmability: 7 Day Multiple Day Programming or Non-Programmable
  • Changeover: Auto/Manual Selectable
  • Color: Premier White®
  • Switch Positions (System): HEAT-OFF-COOL-AUTO-EM.HEAT
  • Switch Positions (Fan): AUTO-ON-CIRC
  • Power Method: Battery or Hardwired
  • Terminal Designations: R, RC, W (O/B), W2 (AUX), Y, Y2, L, E, G, C, S1, S2
  • Dimensions (in.): 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep
  • Dimensions (mm): 116 mm high x 152 mm wide x 32 mm deep
  • Mounting: Horizontal
  • Electrical Ratings: 20 to 30 Vac or 750 mV
  • Frequency: 50 Hz / 60 Hz
  • Setting Temperature Range (F): Heat: 40 F to 90 F; Cool: 50 F to 99 F
  • Setting Temperature Range (C): Heat: 4.5 C to 32 C; Cool: 10 C to 37 C
  • Differential Temperature (F): ± 1 F
  • Differential Temperature (C): ±0.5 C
  • Stages: Up to 3 Heat/2 Cool Heat Pump
  • Stages: Up to 2 Heat/2 Cool Conventional
  • Outdoor Sensor: Yes, optional outdoor or indoor remote
  • Sensor Element: Thermistor
  • Heat Current: 1.0 A running
  • Cool Current: 1.0 A running
  • Fan Current: 0.6A running
  • Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
  • The L terminal is an input or output.
  • Selectable: Programmable or Non-Programmable
  • Includes Dehumidification Control.
  • Display Size: 10 sq in.

Additional Honeywell Links

Our SKU: Honeywell TH8321U1006

This product is listed under the following manufacturer number(s):

  • Honeywell TH8321U1006*

*Denotes a finish or option that has been discontinued

Honeywell TH8321U1006 Product Specifications

Amperage 1
Auto Changeover Yes
Backlit Yes
Control Type Touch Screen
Depth 1.25
Display Size 10
Display Type LED
Frequency 50, 60
Hardwired Yes
Height 4.56
Humidity Sensing No
Indicator Light No
Keypad Lock Yes
Large Display Yes
Power Source Battery, Hardwired
Programmable Yes
Settings 5
Supports 24 Volts Yes
Supports Electric Yes
Supports Gas Yes
Supports Heat Pump Yes
Supports Millivolt Yes
Touch Screen Yes
Width 6

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