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It might not be as pretty as the Nest 3.0, but Tado has quietly evolved into the best all-round smart heating system around. Like autopilot for your boiler, it senses when you’re leaving home or coming back thanks to the app’s geolocation and can learn your behaviour regardless of how unpredictable your routine is. Tado’s gadgety goodness is second to none, with the option of zonal control for individual rooms and voice smarts from the likes Alexa and Google Assistant.