Name: Honeywell Home T3 Pro Non-Programmable Thermostat TH3110U2008/U
Brand: Honeywell Home
SKU: HONE-TH3110U2008/U
Price: 30.00 USD
Availability: Discontinued

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Supply Voltage	20 to 30 Vac
Frequency	50 Hz; 60 Hz
Electrical Connections	UWP Mounting System
Electrical Ratings	20 to 30 Vac
Operating Temperature	37 F to 102 F
Ambient Temperature	32 F to 120 F
Operating Humidity	5 to 90% RH, non-condensing
Mounting	UWP Mounting System
Application	Conventional and Heat Pump systems
Includes	Thermostat, UWP mounting system, Installation (J-box) adaptor,
Dimensions	3.86 in. High x 5.36 in. Wide x 1.08 in. Deep
Stages	Up to 1 Heat/1 Cool Heat Pumps; Up to 1 Heat/1 Cool Conventional Systems
Switch Positions (System)	HEAT-OFF-COOL-AUTO
Switch Positions (Fan)	AUTO-ON
Shipping and Storage Temperature Range (F)	- 20 F to 120 F
LEDs	LED Back Light
Power Method	Battery or Hardwired
Color	White
Display	Medium display, Soft Key Controls
Accuracy (F)	±1 F
Differential Temperature (F)	±1 F
Switch Type	Relay
Programmability	Non-programmable
Terminal Designations	RC, R, C, W, O/B, Y, G, K
Display Size	3.79 sq. in.
Temperature Control Mode Selections	Ambient Air Temperature
Changeover	Auto or Manual
Setting Temperature Range (F)	Heat: 40 F to 90 F; Cool: 50 F to 99 F
Cool Current	0.02 A to 1.0 A running
Heat Current	0.02 A to 1.0 A
Fan Current	0.02-.05 A

TH3110U2008 has been discontinued by the manufacturer (2025-09). Direct replacement: TH1110U4000 - FocusPro N100 Non-Programmable, 1H/1C, Large Display Thermostat.

The Honeywell Home TH3110U2008/U is a T3 Pro wall thermostat.

Non-programmable. One setpoint, changed by hand. That is the right choice for a rental, a shop, a space on a fixed occupancy, or any job where a schedule would just get overridden. Fewer things to explain at handover, and nothing to reprogram after a power event.

Where it sits in the range. Resideo builds these in tiers, and the tier number is the amount of control you get, not the build quality. T1 and PRO 1000 are single-stage and non-programmable — set it and leave it. T3 and PRO 3000 add a digital display and more staging. T4 and PRO 2000 add scheduling. T6 covers multi-stage and heat pump work, with a Smart version that adds Wi-Fi. T10 Pro is the top of the line, with RedLINK and remote room sensing. PRO 1000, PRO 2000 and PRO 3000 are the older names for the same tiers as T1, T4 and T3 — if you are matching what came out of the wall, the PRO number and the T number can be the same generation of product under two labels.

Before you order. Match the thermostat to the equipment, not to the room: count the heating and cooling stages the system actually has, and confirm whether it is a heat pump or a conventional system, because the two wire differently at the thermostat. A unit rated for more stages than you have will work; one rated for fewer will not run the equipment you own. If you are replacing a Honeywell Home unit, the part number carries over — Honeywell Home thermostats are made by Resideo, and the legacy numbering is the same.

Brand: Honeywell Home
Manufacturer Part #: TH3110U2008/U
UPC: 194159004368
Category: Thermostats

Replacement

The manufacturer has discontinued this model. Recommended replacements:

Full Specifications

Application	1H/1C Conventional Systems, Heat Pumps with No Auxiliary Heat
Product Features	Ready out of the box, Large, backlit digital display, Intuitive up and down vertical buttons, Precise comfort accuracy of +/-1°F, UWP for easy upgrades, 5-year warranty
Stages	1 Heat/1 Cool Heat Pump Systems, 1 Heat/1 Cool Conventional Systems
Display Size	3.79 sq in
Display Language	English
Modes of Operation	Heat, Cool
Program Type	Manual / Not Programmed
Energy Star Certified	No
Alerts and Reminders	Battery Replacement
Power Supply	Battery Powered, Hardwired
Power Source	Hardwired, Battery Operated
Warranty	5 Years
Includes	Thermostat, UWP Wall plate, Cover Plate, Screws and anchors, Literature
WiFi	No
Z-Wave	No
RedLINK	No
Color	White
Sensor Type	Thermistor
Ambient Operating Temperature (Max)	102 °F, 39 °C
Ambient Operating Temperature (Min)	37 °F, 2.8 °C
Differential Temperature	± 1 °F, ± 0.5 °C
Operating Relative Humidity (Max)	90% non
Operating Relative Humidity (Min)	5% non
Electrical Connection Type	UWP Mounting System
Mounting Type	UWP Wall Plate
Power Supply Frequency	50 Hz, 60 Hz
Set point Temperature (Max)	Heat: 90 °F, Heat: 32 °C, Cool: 99 °F, Cool: 37 °C
Set point Temperature (Min)	Heat: 40 °F, Heat: 4.5 °C, Cool: 50 °F, Cool: 10 °C
Mounting Location	Wall
Switch Type	Relay
Product Height	3.86 in, 98 mm
Product Width	5.36 in, 136 mm
Product Depth	1.08 in, 28 mm

Documents & Downloads

User Guide for T3 Pro Thermostat (English, French, Spanish) (1.7MB PDF)
Installation Instructions for T3 Pro Thermostat (English, French, Spanish) (2.5MB PDF)
Contractor Sell Sheet for T3 Pro Non-programmable Thermostat (English) (0.7MB PDF)
Homeowners Sell Sheet for T3 Pro Non-programmable Thermostat (English) (0.7MB PDF)
The Honeywell Home T Series Brochure (English) (3.5MB PDF)
Programmable and Non-Programmable Thermostat Selection Guide (English) (0.4MB PDF)
T3 Pro Series Thermostats Submittal Sheet (English, French) (0.1MB PDF)

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Honeywell Home T3 Pro Non-Programmable Thermostat TH3110U2008/U