Smart Thermostat Comparison · UK 2026
Honeywell Home T6R-HW vs Netatmo Smart Thermostat

Specs, pros and cons compared side by side

Both the Honeywell Home T6R-HW and the Netatmo Smart Thermostat are smart thermostats. This head-to-head sets them side by side using the specs, pros and cons from our full reviews. Honeywell Home specs come from Resideo’s own UK pages and guides; Netatmo specs come from Netatmo’s own pages.

Quick verdict

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Honeywell Home T6R-HW

Pick it for: Controls heating and stored hot water (Netatmo lists no hot water control for this model) · OpenTherm as well as 24-230V on/off (the Netatmo: on/off control; Netatmo sells a separate Smart Modulating Thermostat for OpenTherm modulating boilers) · Location-based control with geofencing (Netatmo lists geolocation only for its ORIGINAL thermostats)

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Netatmo Smart Thermostat

Pick it for: Grows into room-by-room control with up to 20 Smart Radiator Valves (not listed for the T6R-HW) · Runs on three AAA batteries, rated for 2 years in Netatmo’s guides (the T6R-HW wall-mounted kit: a 230V wall power supply)

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Quick comparison

Spec Honeywell Home T6R-HW Netatmo Smart Thermostat
Key specs from our review Wireless receiver box
Heating and hot water
Resideo app, 2.4GHz Wi-Fi
OpenTherm or 24-230V on/off
Large touchscreen		 E Ink display
3 AAA batteries
Relay joins 2.4 GHz Wi-Fi
Boiler on/off control
Alexa and Google Assistant
Honeywell Home T6R-HW

Pros

  • Heating and stored hot water from one thermostat
  • Receiver box and thermostat come pre-bound
  • OpenTherm and 24-230V on/off support

Cons

  • Receiver box must be installed by a competent person
  • Not for electric heating (240V)
Netatmo Smart Thermostat

Pros

  • No additional subscriptions, with free consumption reports
  • Auto-Adapt times the heating to the outside temperature and your insulation
  • Grows into room-by-room control with up to 20 Smart Radiator Valves

Cons

  • Netatmo lists no hot water control for this model
  • No built-in geofencing: Netatmo lists geolocation only for its ORIGINAL thermostats
  • The relay needs a wall socket (wired installation) or wiring at the boiler (wireless installation); use a qualified electrician or heating engineer if you’re unsure

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Which should you buy?

Why choose the Honeywell Home T6R-HW

  • Controls heating and stored hot water (Netatmo lists no hot water control for this model)
  • OpenTherm as well as 24-230V on/off (the Netatmo: on/off control; Netatmo sells a separate Smart Modulating Thermostat for OpenTherm modulating boilers)
  • Location-based control with geofencing (Netatmo lists geolocation only for its ORIGINAL thermostats)
Why choose the Netatmo Smart Thermostat

  • Grows into room-by-room control with up to 20 Smart Radiator Valves (not listed for the T6R-HW)
  • Runs on three AAA batteries, rated for 2 years in Netatmo’s guides (the T6R-HW wall-mounted kit: a 230V wall power supply)

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