Smart Thermostat Comparison · UK 2026
Honeywell Home T6R-HW vs tado° Smart Thermostat X (2nd Gen)

Specs, pros and cons compared side by side

Both the Honeywell Home T6R-HW and the tado° Smart Thermostat X (2nd Gen) 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; tado° specs come from tado°’s own pages.

Quick verdict

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Honeywell Home T6R-HW

Pick it for: The thermostat uses your 2.4GHz Wi-Fi for the Resideo app (the 2nd gen: needs a Bridge X or another Thread border router) · Large touchscreen for scheduling and overriding the temperature (the 2nd gen: a 42 x 18 mm LED matrix and a light ring) · Heating and stored hot water in both kits (the 2nd gen: Hot Water Control comes with the Programmer X in the Wireless Starter Kit)

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tado° Smart Thermostat X (2nd Gen)

Pick it for: Thread and Matter enabled (neither listed for the T6R-HW) · Top-button shortcuts to resume the schedule, boost the heating or check humidity (not listed for the T6R-HW) · tado’s UK product page says the wired version fits on your existing thermostat wires with no electrician needed; if you’re unsure about the wiring, use a qualified heating engineer (the T6R-HW: Resideo says it must be installed by a competent person)

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Quick comparison

Spec Honeywell Home T6R-HW tado° Smart Thermostat X (2nd Gen)
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
17.8 mm thin
USB-C rechargeable battery
LED matrix + light ring + top button
Thread + Matter
Needs Bridge X or a Thread border router
Honeywell Home T6R-HW

Pros

  • Heating and stored hot water from one thermostat
  • Receiver box and thermostat come pre-bound
  • Works as a programmable thermostat without Wi-Fi
  • Table-stand or wall-mounted kit
  • Works with OpenTherm and 24-230V on/off boilers and heat pumps

Cons

  • Receiver box must be installed by a competent person
  • 2.4GHz Wi-Fi only
  • Not for electric heating (240V)
tado° Smart Thermostat X (2nd Gen)

Pros

  • Slimmer than the first generation
  • No AAA batteries, just a USB-C charge
  • Top-button shortcuts for resume schedule, boost heating or humidity
  • Works alongside existing tado° X devices
  • Suits boilers, heat pumps and underfloor heating

Cons

  • Needs a Bridge X or other Thread border router unless the kit includes one
  • USB-C cable not included
  • Not compatible with tado° V3+ or older
  • Several smart features, including Adaptive Heating and Geofencing, are listed under the optional AI Assist subscription

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Which should you buy?

Why choose the Honeywell Home T6R-HW

  • The thermostat uses your 2.4GHz Wi-Fi for the Resideo app (the 2nd gen: needs a Bridge X or another Thread border router)
  • Large touchscreen for scheduling and overriding the temperature (the 2nd gen: a 42 x 18 mm LED matrix and a light ring)
  • Heating and stored hot water in both kits (the 2nd gen: Hot Water Control comes with the Programmer X in the Wireless Starter Kit)
Why choose the tado° Smart Thermostat X (2nd Gen)

  • Thread and Matter enabled (neither listed for the T6R-HW)
  • Top-button shortcuts to resume the schedule, boost the heating or check humidity (not listed for the T6R-HW)
  • tado’s UK product page says the wired version fits on your existing thermostat wires with no electrician needed; if you’re unsure about the wiring, use a qualified heating engineer (the T6R-HW: Resideo says it must be installed by a competent person)

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