Name: Honeywell Home TL8230A1003/U Double-Pole Line-Voltage Programmable Thermostat
Brand: Honeywell Home
SKU: HONE-TL8230A1003/U
Price: 128.70 USD
Availability: InStock

Double-Pole Line-Voltage Programmable Thermostat

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Supply Voltage	208 Vac; 240 Vac
Frequency	50 Hz; 60 Hz
Electrical Connections	5.5 in. (140mm) tinned copper lead wires
Electrical Ratings	15 Amps Max; 3600 Watts at 240 VAC, 3120 Watts at 208 VAC
Ambient Temperature	32 F to 122 F
Mounting	Vertical
Application	Electric baseboards, convectors and fan forced heaters (resistive rated loads).
Dimensions	4 7/8 in. high x 2 3/4 in. wide x 7/8 in. deep
UL	UL Listed 9R12, File Number: E183695
CSA	cCSAus, File Number: LR76030; Compliant to CAN/CSA-C828-06
Stages	1 Heat
Color	Premier White®
Sensor Element	Thermistor
Switching Action	DPST
Programmability	7 Day program
Display Size	2.67 sq in.
Setting Temperature Range (F)	40 F to 86 F

The TL8230A1003 is a line-voltage thermostat from Honeywell Home for electric resistance heat — baseboard, convectors, radiant ceiling or panel heaters.

Line voltage is the distinction that matters here. A low-voltage thermostat switches a 24 V control circuit and lets a furnace or boiler do the work; a line-voltage thermostat carries the full heater current itself. They are not interchangeable, and a low-voltage stat wired to a baseboard circuit fails immediately.

This is a double-pole thermostat: it breaks both legs of the supply, so the heater is fully de-energized when the thermostat is satisfied or turned off. Double-pole is what most jurisdictions require on 240 V baseboard, and it is what makes the heater safe to work on with the thermostat off.

The programmable schedule lets the heat drop back when the room is empty and recover before it is used again. On electric resistance heat, where every watt is billed at full price, setback is the single largest saving available — there is no efficiency to improve, only run time to remove.

Match the voltage and the pole configuration to the heater circuit, and check the amperage of the heater against the rating of the thermostat. A thermostat sized below the load is the most common cause of a line-voltage stat failing in its first season.

Brand: Honeywell Home
Manufacturer Part #: TL8230A1003/U
Type: Line-voltage thermostat
Poles: Double-pole
Control: Programmable
UPC: 085267262637
Category: Line Voltage Thermostats

Full Specifications

Thermostat Type	Digital, Line Voltage, Programmable
Stages	1 Heat
Display Size	2.67 sq in
Programming Features	Away Mode, Economy Mode, Holiday Mode, Temporary Override
Program Type	7-Day Programmable, Manual / Not Programmed
Energy Star Certified	No
Power Source	Line Voltage
Frequency	50 Hz, 60 Hz
Warranty	3 Years
Includes	Power base, Screws, Solderless connectors for copper wires
Z-Wave	No
Color	Premier White®
Sensor Type	Thermistor
Operating Relative Humidity (Max)	95% RH non-condensing
Backlight Options	Backlight Button
Mounting Type	Single Gang Electrical Box, Vertical Mount
Switch Action	DPST
Mounting Location	J-Box
Product Height	4.88 in, 124 mm
Product Width	4.5 in, 115 mm
Features	Backlit Display