Smart Thermostat X

If you want smarter, room-by-room heating that actually talks to modern smart-home systems, this wired tado Smart Thermostat X is built for that problem: it adds precise boiler control, app and voice control and newer networking standards so your heating reacts to real-world conditions instead of a single manual dial. ## What makes it worth it The X line brings OpenTherm modulation and relay control, so compatible boilers and heat pumps can run at variable power instead of simple on/off cycles — that improves comfort and efficiency compared with legacy on/off thermostats. The device is Matter- and Thread-ready, giving genuinely modern smart-home interoperability when you pair it with a Bridge X or any Thread border router. tado's AI Assist (optional upgrade) is a meaningful differentiator: the company models up to 55% extra savings from AI Assist and the baseline product claims around 22% average savings with wider multi-room control, backed by tado's published modelling. Finally, the thermostat supports app scheduling, Alexa/Google/Siri voice control and DIY wired installation for most boilers, heat pumps and wired underfloor systems. ## Where it falls short The X range is not backward compatible with tado V3+ or older hardware, so upgrading an existing tado system may force replacing other devices or sticking with the older platform. AI Assist savings are modelled by tado and gated behind an optional subscription, and Matter/Thread features require a Bridge X or a compatible Thread border router, which adds cost. Buy this if you want a future-proof, room-level wired thermostat that gives OpenTherm modulation and modern Matter/Thread integration; skip it if you need a plug-and-play replacement for an existing tado V3+ setup or you won't pay for subscription features.

£85.05