Our Take
The Google Nest Learning Thermostat 3rd Generation is Google's mid-range smart thermostat—sitting between the basic Nest Thermostat and the pricier Nest Hub setup. It's genuinely clever kit that learns your heating patterns over time and adjusts automatically, so you're not fiddling with settings every season. It's for people who want a "set it and forget it" approach to heating, especially if you're already in the Google ecosystem with a Nest Hub or use Google Home.
In practice, this thing picks up your schedule remarkably quickly—usually within a week or two. It's got a circular design with a 2.08-inch display (clear and easy to read from across a room), powered by two AA batteries that typically last a couple of years. It connects via WiFi and Bluetooth, and it supports OpenTherm protocol for compatible boilers, plus basic on/off control for simpler systems. The interface is genuinely intuitive—rotating the outer ring adjusts temperature, and the touchscreen handles the smart stuff. Real-world heating control is snappy, with no noticeable lag between adjustments and your boiler responding.
Against rivals like the Honeywell Home T6, the Nest's learning algorithm is its real strength—it does the thinking for you rather than relying on manual scheduling. However, you'll want to check boiler compatibility before ordering (Google's website has a detailed list, and most UK combi boilers work fine, but older systems sometimes need a bit more investigation). It ships with a wall plate, batteries included, and basic wiring hardware—though you might need an electrician if your current thermostat setup is unusual. One thing to note: it needs a reasonably stable WiFi connection, so if your router's tucked away far from the hallway, you might get the occasional dropout.
Key Features
2.08-inch circular touchscreen display with rotating outer ring control
Dual AA battery power with approximately 2-year runtime
WiFi and Bluetooth connectivity with OpenTherm protocol support
Learning algorithm that adapts to your heating patterns automatically
Remote control via Google Home app and voice commands through Google Assistant
Compatible with most UK combi boilers and conventional heating systems (check compatibility pre-purchase)
Our Verdict
Buy this if you're in the Google ecosystem, have a modern UK boiler, and want a thermostat that learns your habits instead of demands constant fiddling. Skip it if you're on a tight budget, have an older heating system, or prefer total manual control over automatic learning.