Honeywell - TH4210D1005 - Programmable 5-2 day thermostat for heat pump

Item: HONTH4210D1005
MFG: TH4210D1005
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Programmable 5-2 Day Thermostat For Heat Pump


The PRO programmable family of thermostats offers a basic thermostat with the benefits of energy savings. the PRO features an easy-to-read display and 5-2 day programming. Best of all, it’s backed by the Honeywell name.

  • Weekday/Weekend programming - 5-2 (Weekdays, Weekend) programming
  • Backlit digital display - both current and set temperatures are easy to read in various lighting conditions
  • Precise comfort control [±1 F (± 0.5 C)] - maintains consistent comfort to the highest level of accuracy
  • Basic operation - easy-to-use slide switches allow you to select the heat or cool mode, and operate the fan
  • the PRO 4000 has built in instructions - simple, pull out instruction manual
  • Adaptive Intelligent Recovery™ - ensures programmed temperature is reached by programmed time

California residents: see Proposition 65 Warning

Features and Specification

Language English
Length 1.2500
Low Battery Indicator Yes
Manual Yes
Mounting Horizontal
Operating Temperature Range 32°F to 120°F (0°C to 48.8°C)
Displays Outdoor Temperature No
Dual Transformer Compatible No
EAN 0085267261203
Electrical Connection Screw Terminals
Electrical Rating 20 to 30 VAC or 750 mV
Energy Star Rated Yes
Fan Switching Yes
Heat Pump Compatible Yes
Height 3.8125
Hinged No
Humidification No
Indoor Remote Sensor No
Width 5.3750
Touchscreen No
Stages Heat 2
Switch Action Heat-Off-Cool-Emergency Heat
System Switching Yes
Temperature Range Heat: 40°F to 90°F (4.4°C to 32.2°C); Cool: 50°F to 99°F (10°C to 37.2°C)
Temperature Settings per Day 4
Terminal Designations R, Y, AUX, E, G, O, B, L, C
UPC 085267261203
Vacation Mode No
Voltage 24 VAC
Warranty Offered Yes
Stages Cool 1
Package Height 3.9000
Package Length 1.4000
Package Weight 0.8000
Package Width 5.5000
Power Method Dual Powered: Battery or Hardwired
Programmable Yes
Programmable Fan Yes
Sensing Element Yes
Dimensional Weight 1.0000
Display Options Backlit
Weight 0.7000
Display Yes
Batteries Included Yes
Battery Backup Yes
Brand Honeywell
Built In Wi-Fi No
Change/Check Reminders No
Cubic Measurement 0.0148
Cycle/Hertz 50/60 Hz
Daylight Savings Time Ready No
Differential Temperature ± 1°F; ±0.5°C
Digital-Non Programmable No
Digital-Programmable Yes
Backlit Yes
Auto Changeover No
750mV Compatible Yes
Accuracy ± 1°F; ±0.5°C
Ambient Temperature Range 32°F to 120°F (0°C to 48.8°C)
Application Heat Pump Systems