Honeywell TH114-A-120S/U Line ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$193.87
$143.87
Honeywell TH114-A-120S/U Line Volt Electric heating Manual Thermostat

Honeywell TH114-A-120S/U Line Volt Electric heating Manual Thermostat

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Model: TH114-A-120S/U
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$193.87
$143.87
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Line Volt Electric heating Manual Thermostat

  • Features

    • Advanced temperature control ensures total comfort by minimizing temperature swings
    • ON/STANDBY switch enables thermostat shutdown at the end of heating season for added security
    • Battery-free
    • Backlit display
    • On-screen heating power indicator gives at-a-glance verification of power being used

Manufacturer Resources

Product Specs

Accuracy C :
0.5 C
Accuracy F :
0.9 F
Ambient Temperature Range C :
0 C to 50 C
Ambient Temperature Range F :
32 F to 122 F
Application:
Baseboard heater; Radiant ceiling; Convector or Fan-forced Heater; Electric Heating
Approvals Canadian Standards Association:
Approved; Compliant to CAN/CSA-C828-06
Approvals Underwriters Laboratories Inc :
Approved
Cycles Per Hour:
4
Differential Temperature C :
0.5 C
Differential Temperature F :
1 F
Dimensions In :
4.9 in. X 2.8 in. X 0.9 in.
Dimensions Mm :
124 mm X 70 mm X 23 mm
Electrical Connections:
6 in. (150 mm) tinned copper lead wires
Electrical Ratings:
Max. 2000 W @ 120 V, 16.7 A resistive
Frequency:
50 Hz; 60 Hz
Item Type:
Product
Mounting Method:
Vertical
Power Method:
Hardwired
Product Color:
White
Sensor Element:
Thermistor
Setting Temperature Range C :
5 C to 30 C
Setting Temperature Range F :
40 F to 86 F
Supply Voltage:
120 Vac
Switch Classification:
Epoxy-soundproofed relay
Switch Positions System :
°C/°F (switch MUST be set to AF for this thermostat to be operational); AF (ambient + floor)/F (flo
Switching Action:
SPST
Used With:
Aube CT240/CT241 Telephone Controller

Honeywell TH114-A-120S/U – Frequently Asked Questions

1) Can the Honeywell TH114-A-120S/U run a 240V baseboard heater, or is it 120V only?
120V only. The TH114-A-120S/U is rated 120 Vac supply with a maximum load of 2000 W at 120 V, 16.7 A resistive. Put it on a 240V circuit and you are outside its rating. If the baseboard circuit in the unit is 240V, you need the 240V version of the thermostat instead.
2) How much baseboard heat can one TH114-A-120S/U control?
Up to 2000 watts at 120 V, which is 16.7 amps resistive. Add up the nameplate wattage of every heater on the circuit before you wire them through one stat. A 1500 W and a 750 W baseboard on the same 120V loop totals 2250 W and exceeds it, so those need to be split or run through a relay.
3) What kind of electric heat does this Honeywell line voltage thermostat work with?
Electric resistance heat: baseboard heaters, radiant ceiling, convectors, and fan-forced heaters. It switches the line itself, SPST, through an epoxy-soundproofed relay, so it is not a low-voltage stat and will not control a furnace, heat pump, or any 24V system.
4) Is the Honeywell TH114-A-120S/U UL and CSA approved for commercial work?
Yes. It carries Underwriters Laboratories approval and is CSA approved, compliant to CAN/CSA-C828-06, which is the Canadian performance standard for line voltage electric heating thermostats. That pairing is what inspectors on multi-family retrofits in both countries typically want to see.
5) Will the Honeywell TH114 fit a standard single-gang box?
The body measures 4.9 x 2.8 x 0.9 inches (124 x 70 x 23 mm) and mounts vertically. Plan the orientation before you cut in, because it is not designed to be turned on its side, and the lead wires give you 6 inches of slack to work with in the box.
6) How tightly does this Honeywell manual thermostat hold room temperature?
Accuracy is 0.9 F (0.5 C) with a 1 F (0.5 C) differential, and it cycles 4 times per hour. That is a much tighter swing than an old bimetal line voltage stat, which is the practical reason to swap one out in a tenant space where people complain about the room overshooting.
7) What temperature range can tenants set on the TH114-A-120S/U, and can I use it for freeze protection?
The setpoint range is 40 F to 86 F (5 C to 30 C), so the bottom of the dial will hold a vacant space above freezing. The unit itself is rated to operate in ambient conditions from 32 F to 122 F (0 C to 50 C).
8) Does this thermostat use a floor sensor?
No floor sensor ships with the TH114-A-120S/U, and it reads the room with a thermistor element. Note the system switch positions include an AF (ambient plus floor)/F (floor) selection, and the switch MUST be set to AF for this thermostat to be operational.
9) Can I shut these thermostats down for the summer without pulling the breaker?
There is an ON/STANDBY switch on the thermostat for exactly that, so at the end of heating season a property manager can take a unit out of service at the wall. The display is backlit and shows a heating power indicator, so you can see at a glance whether the heater is actually drawing.
10) Can the TH114 be controlled remotely?
It works with the Aube CT240/CT241 telephone controller, which lets you raise or lower the heat in a seasonal property or a rental by phone. On its own it is a manual, non-programmable stat with no scheduling.
11) What color is the Honeywell TH114 thermostat, for matching across a building?
White, which is the standard finish across the TH114 line and matches typical white device plates when you are standardizing dozens of apartments or classrooms on one stat.
How fast can I get the Honeywell TH114-A-120S/U delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Honeywell TH114-A-120S/U come with a warranty?
Absolutely. The Honeywell TH114-A-120S/U is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Honeywell TH114-A-120S/U?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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