Honeywell TH114-A-240D-B/U Lin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$173.76
$123.76
Honeywell TH114-A-240D-B/U Line volt manual thermostat for electric heat

Honeywell TH114-A-240D-B/U Line volt manual thermostat for electric heat

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Model: TH114-A-240D-B/U
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$173.76
$123.76
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Line volt manual thermostat for electric heat

  • Features

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

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. 3600 W @ 240 V, 15 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:
240 Vac
Switch Classification:
Epoxy-soundproofed relay
Switch Positions System :
AF (ambient + floor)/F (floor only); °C/°F (switch MUST be set to AF for this thermostat to be oper
Switching Action:
DPST
Used With:
Aube CT240/CT241 Telephone Controller

Honeywell TH114-A-240D-B/U – Frequently Asked Questions

1) Will the Honeywell TH114-A-240D-B/U run a 240V baseboard heater, and how many watts can it handle?
It's a 240 Vac line voltage thermostat rated to a maximum 3600 W at 240 V, 15 A resistive. That covers baseboard heaters, radiant ceiling, convectors and fan-forced electric heaters. Add up the nameplate wattage of every heater on the circuit: if the total goes past 3600 W you need a contactor or a second thermostat on a separate circuit.
2) Can I use this 240V line voltage thermostat on a 120V heater?
No. The TH114-A-240D-B/U is built for a 240 Vac supply only. For a 120 V baseboard circuit you need the 120 V version of the TH114 family, not this one. It is also not a low voltage thermostat, so it will not run a 24 V furnace or heat pump.
3) Does the Honeywell TH114 thermostat need a neutral or batteries to work?
Neither. It's hardwired and battery-free, and it switches DPST, meaning it breaks both legs of the 240 V circuit. You wire it in series with the heater using the two line conductors, so no neutral and no battery backup to maintain, which is what property managers want across a lot of units.
4) What wire connections come on the back of this thermostat and will it fit a standard single-gang box?
The thermostat comes with 6 in. (150 mm) tinned copper lead wires, so you splice to the circuit conductors with wire nuts rather than landing wires on screw terminals. Body size is 4.9 in. x 2.8 in. x 0.9 in. (124 mm x 70 mm x 23 mm). It must be mounted vertically.
5) Is the Honeywell TH114-A-240D-B/U UL and CSA approved for use in a commercial building?
It carries Underwriters Laboratories approval and is CSA approved, compliant to CAN/CSA-C828-06. That's the Canadian standard for electric heating thermostat performance, which matters on Canadian institutional and multi-family work.
6) Will this thermostat work with an in-floor heating sensor?
No, not as a floor sensing stat. There is an AF (ambient + floor)/F (floor only) switch on the unit, but this model must be set to AF to operate, so it works off room air temperature. If you need true floor sensing with a slab probe, specify a floor sensing thermostat instead.
7) What temperature range can tenants set on the Honeywell TH114-A-240D-B/U?
Setting range is 40 F to 86 F (5 C to 30 C), and the display can be switched between Fahrenheit and Celsius. Tenants get a normal comfort band without being able to drive a unit to freezing or cook it.
8) How tight does this electric heat thermostat hold room temperature compared to an old bimetal stat?
It uses a thermistor sensor with a 1 F (0.5 C) differential, 0.9 F (0.5 C) accuracy, and cycles 4 times an hour. That's a much narrower swing than a mechanical bimetal line voltage stat, which is the usual complaint when replacing one in an apartment or office.
9) Is this thermostat programmable, or does someone have to set it by hand?
Manual, not programmable. You set a temperature and it holds it. It does have an ON/STANDBY switch so the stat can be shut down at the end of the heating season, plus a backlit display and an on-screen heating power indicator. If you need setback schedules on 240 V electric heat, this is the wrong model type.
10) Can I control this Honeywell line volt thermostat remotely by phone?
It works with the Aube CT240/CT241 Telephone Controller, which is how you'd get remote setback on a vacation property or a seasonal building. The controller is a separate item and is not included.
11) What ambient conditions can this thermostat be installed in, and what color is it?
White, and rated for ambient temperatures of 32 F to 122 F (0 C to 50 C), so it is for conditioned interior spaces, not unheated garages or outdoor enclosures that drop below freezing. Switching is handled by an epoxy-soundproofed relay, so there is no audible click in a quiet bedroom. 50 and 60 Hz supply are both accepted.
How fast can I get the Honeywell TH114-A-240D-B/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-240D-B/U come with a warranty?
Absolutely. The Honeywell TH114-A-240D-B/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-240D-B/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
Why buy the Honeywell TH114-A-240D-B/U from ZenSupply?
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