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Product guide

Honeywell Home MT1 THR830TEU Mechanical Thermostat

The Honeywell Home MT1 THR830TEU is a mechanical room thermostat with a rotary knob for automatic on/off temperature control. Its stated 10 to 30°C set-point range and wall-mount design suit straightforward heating control, while the listing’s digital-control and Wi-Fi fields conflict with the mechanical product description.

At a glance

  • Designed for automatic on/off control of heating, cooling or combined heating and cooling installations, including gas boilers, circulation pumps, relays and zone valves.
  • A dual-diaphragm sensing element and heat anticipator are stated to support close temperature control, including for systems with a high heating ramp rate.
  • Can be mounted directly on a wall or conduit box. The listing says mounting screws are provided.
  • Change-over contact switching is stated for cooling loads.
Price
£15.19Save 24%

Reference price: £19.99

Price checked: 12 Nov 2026

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Pros and cons

Pros

  • Mechanical knob operation offers direct, simple adjustment without relying on a digital interface.
  • The 10 to 30°C set-point range covers common room-temperature settings.
  • The stated compatibility covers several heating-system components, including gas boilers and zone valves.

Technical specifications

13 specifications
Identity
BrandHoneywell Home
ModelTHR830TEU
Control and operation
Set-point range10 to 30°C set point range.
Operating temperature rangeOperating temperature range 0 to 40° C
Control styleOn/Off Mechanical
Temperature control typeHeating
Display type listedanalog
Control methods listedPush Button
Electrical and connectivity
Power configurationCorded Electric
Voltage230 Volts
Wireless connection listedWi-Fi
Installation and dimensions
Mounting type listedWall Mount
Dimensions3.5D x 8.3W x 8.3H centimetres

What to know before buying

Listing details to confirm

The listing is inconsistent about controls and connectivity: it describes a mechanical knob and on/off mechanical operation but also lists push-button control and Wi-Fi. The display is listed as analog, and the product is not described as smart or programmable. Confirm the intended control type and system compatibility before purchase. Customer feedback reports mixed temperature accuracy, with some users finding settings accurate and others reporting calibration 2-3 degrees off.

What’s in the box

Included
  • Thermostat
  • User manual

Who is it for?

A good fit for

  • Buyers seeking a straightforward mechanical thermostat for compatible heating systems.
  • Installations where wall or conduit-box mounting and manual temperature adjustment are suitable.

Less suited to

  • Buyers who specifically need confirmed Wi-Fi control, app operation or a programmable schedule.
  • Buyers needing guaranteed temperature accuracy without checking calibration for their installation.
Honeywell Home MT1 THR830TEU Mechanical Thermostat · photo 2
Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,096 ratings
  • 5 stars67%67%
  • 4 stars18%18%
  • 3 stars6%6%
  • 2 stars3%3%
  • 1 star6%6%

Customer feedback describes installation as quick and the thermostat as simple to use, with positive comments about quality, functionality and appearance. Some customers report accurate temperature settings, while others say calibration was 2-3 degrees off. That difference matters for buyers relying on close room-temperature control, despite the listing’s stated sensing features.

Positive themes

  • Customers report straightforward, quick installation and easy operation.
  • Feedback includes positive comments about quality, functionality and appearance.

Mixed feedback

  • Temperature accuracy receives mixed feedback, including reports of settings being accurate and reports of calibration being 2-3 degrees off.
  • Feedback on installation instructions is mixed.

Frequently asked questions

What temperature range is listed?

The stated set-point range is 10 to 30°C. The separate operating temperature range is 0 to 40° C.

Can it control a boiler?

The manufacturer describes it for automatic on/off control of gas boilers, as well as circulation pumps, relays and zone valves. Check that its switching arrangement suits your particular system.

Does it have Wi-Fi or push-button controls?

Those details are listed, but they conflict with the mechanical-knob and analog description. Confirm the exact control configuration with the selected listing before buying.

Honeywell Home MT1 THR830TEU Mechanical Thermostat · photo 3
Additional product photo 3

Alternative options

Product details in Markdown