# Honeywell Home DT3 Wired Thermostat, Black

Black: Honeywell Home DT3 is a wired digital room thermostat for heating control, with touch operation and a dimming LED display. It requires no Wi-Fi or app to operate and includes features such as frost protection, eco mode and boost mode.

- [Original product page](https://bargainpostbox.co.uk/product/honeywell-home-dt3-wired-thermostat-black)
- [View offer](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Honeywell Home
- Model: DT3
- Price: 38.27 GBP
- Previous price: 47.88 GBP
- Discount: 20%
- Price checked: 2026-11-12T17:39:34.844Z
- Rating: 3.8 / 5
- Reviews: 34

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Wired room thermostat with wall mounting and touch controls.
- The listing says it works without Wi-Fi, an app or a hub.
- The display is described as LED-based, dimming when not in use.
- Manufacturer-described functions include frost protection, eco mode, boost mode and self-learning TPI control.

## Pros

- No app or Wi-Fi is needed for day-to-day operation, which suits buyers who prefer local controls.
- Eco and boost modes provide described options to adjust room temperature for set periods.
- Manufacturer information lists compatibility with a range of heating and cooling systems, including boilers and heat pumps.

## Cons

- Remote app control is not part of the described operation, so it is not suited to buyers who want to manage heating from a phone.

## Specifications

### Identity
- Brand: Honeywell Home
- Model: DT3
### Display and video
- Screen technology listed: led
### Connectivity and controls
- Wired connection listed: Wired
- Control methods listed: Touch
### Power and battery
- Power configuration: Corded Electric
### Dimensions and installation
- Mounting type: Wall Mount
- Weight listed: 0.11 Kilograms
### Other listed details
- Temperature control type: Digital
- Special feature: Frost Protection
- Colour: Wired Black
- Voltage: 230 Volts
- Display backlight: Yes
- Button control listed: Button Control
- Battery requirement listed: 2 AA batteries required.
- Item shape: Rectangular
- Material type: Plastic, Led

## Before you buy

- The product is described as wired, while the specification fields also list corded electric power and a requirement for two AA batteries. Confirm the required electrical connection and battery arrangement for this exact model before installation. The listing also calls the controls both touch and button control, and its broader DT3-range compatibility claims may not apply to every installation. Check compatibility with the heating system and wiring.

## In the box

- 1 x DT3 thermostat (Included)

## A good fit for

- Buyers replacing or adding a wired room thermostat who want direct touch controls and do not need app access.
- Households interested in listed frost protection, eco and boost functions, subject to system compatibility.

## Less suited to

- Buyers who require Wi-Fi, app-based remote control or wireless thermostat placement.
- Installations where compatibility with the existing heating system or wiring has not been confirmed.

## Customer feedback

The available customer evidence is limited to aggregate ratings, which are mixed rather than uniformly positive. This gives only a broad indication of varied experiences and does not explain their causes. Buyers should weigh that uncertainty against their specific needs, especially the wired installation and lack of app-based operation.

## Frequently asked questions

### Does the Honeywell Home DT3 need Wi-Fi or an app?
The listing says the DT3 operates without Wi-Fi, an app or a hub. It is a wired thermostat.
### What heating systems is it compatible with?
The manufacturer describes compatibility across systems including conventional and combi boilers, heat pumps, and some heating and cooling applications. Confirm suitability for your specific system and wiring.
### What functions are listed?
The listing describes frost protection, eco and boost modes, and self-learning TPI control.
### What is included?
The listed contents are one DT3 thermostat. Installation manuals are claimed in the manufacturer feature text, but are not part of the explicit contents line.

## Alternative options

- [Bosch Smart Home Room Thermostat II for wired heating systems, 230 V, compatible with Google Assistant and Alexa](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [Nassboards 7000 Smart Thermostat – Smart Controller Wifi Thermostat with Dial Display for Underfloor Heating – Includes Mobile App, Works with Alexa, Google Home](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [MAJONMMERD Smart Thermostat WiFi Underfloor Heating Led Display \| Temperature Controller, Child Lock, Power Failure Memory, Electric Floor Heating Systems, Black Finish, Indoor](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [Programmable Thermostat for Home Room Temperature Control \(black\) \| with App & Touch Screen](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [tado° Wireless Smart Thermostat X \(2nd gen\) – Starter Kit \| with Programmer and Stand, Heating & Hot Water, Control via App & Smart Speaker, USB-C Rechargeable, customisable button](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [Wireless WiFi Combi Boiler Thermostat Daily Prog Wall/Desktop Heat Cool \| Smart Room Thermostat for Water Underfloor Heating and Boiler, Voice Control with Alexa/Google Assistant, Easy install](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [2-Wire Digital Room Thermostat with Large LCD Display, WallMounted Temperature Controller 2 Wire Digital Room Thermostat](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [Bosch Smart Home Room Thermostat II for Controlling Smart Radiator thermostats](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [Warmup Element Smart Thermostat Wired \| Smartcare, Onyx Black \| Dark Chrome Band, Touchscreen, Advanced Heat setting, easy to install, saves money, One Zone, Installation required](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [KETOTEK Smart Thermostat for Electric Underfloor Heating Alexa Compatible \| Programmable WiFi Underfloor Heating Thermostats Controller with External Probe, Tuya/Smart Life APP Control, White](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [ESRTP4RF+ Wireless Programmable Thermostat – Adjust indoor temperature via programming, intelligently manage heating systems, and promote energy efficiency](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [Cazooo 4 Inch 100mm Black Bathroom Extractor Fan, 12W Square Silent Bathroom Fan, Airflow 95m³/h, Wall/Window/Ceiling Mounted Extractor Fan for Shower Toilet Kitchen, 34 dB, IPX4 Waterproof \(No Timer\)](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)

## Add-ons

- [BG Electrical Double Switched Power Plug Wall Socket, Nexus Metal, Matt Black, 13A, NFB22B](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)
- [BG Electrical Single Wall Light Switch, 2 Way, Raised and Slim Profile, Round Edges, Nexus Metal, Matt Black, 20A, 16AX, NFB12](https://bargainpostbox.co.uk/visit/honeywell-home-dt3-wired-thermostat-black)

## Images

![Honeywell Home DT3 Wired Thermostat, Black — 1](https://bargainpostbox.co.uk/i/2I87stjMHazXw74r-JC-MJHh_Wm-yeBAhSh5wVQfi_vsPhNwWV1Z86FJsR25YQG9EmOgXRwEvyyO975SDh4aMWGUnNR_dKs8rbMwV6kS-RffqIIRTtwV.jpg)

![Honeywell Home DT3 Wired Thermostat, Black — 2](https://bargainpostbox.co.uk/i/_7pX9VnwaO3POib3Q_GzWdLtmVhUKstRG_TCXVDFFxS5Xcn4iGJ-96LU2J-J0nUgj96uJOvHRLXFy2wohASExk5tF9jbiMU3pMZue0RTIR2uhoO3gDlw.jpg)

![Honeywell Home DT3 Wired Thermostat, Black — 3](https://bargainpostbox.co.uk/i/eEdVHobBBFBnivEjN0kD28_O1h6DeXoD4Z2SyTLcpoIkdFoVTNJg_VZmetu6jWpT1AQSaZTITojWNRMmC0bVZUweEwbLy3lT43g1XOaZl_4mk7LxArEc.jpg)

![Honeywell Home DT3 Wired Thermostat, Black — 4](https://bargainpostbox.co.uk/i/nnmBVRlOEGOg7j-BRLlNd9bnbs7uzE00aSz9q30QeZ97Ge8WZV5YwVbsV764KLaahrLAm6Dwr-QzRSV9-7ezONciEX8UTbJcSLDu8eVp-BVUDzty9vvX.jpg)

![Honeywell Home DT3 Wired Thermostat, Black — 5](https://bargainpostbox.co.uk/i/-DL2_fKFpGQGRDu9RqZWF9yJpYBaMbtHkumyB2HWuFXnW1ePYpIsx8XEal82CwQ6R-E3ZyrkibSIeNy-cizpjFlogjv8Qsab7irX73fOTb3Fw2_a9Kto.jpg)

![Honeywell Home DT3 Wired Thermostat, Black — 6](https://bargainpostbox.co.uk/i/KRqsV1jsbMQfWgUVQUDoPnYzJoyDJhHvZx_Zdt1qjoUfPdMz4tETFJ7F7CWflANhOwxEJ8u7t3y54Ex04kyWQ-XMZbGa6EvqHqjGaV4PHz9uOqh6ujYv.jpg)