Google Nest Learning Thermostat (4th Gen)

The 4th Gen Nest Learning Thermostat is Google making a statement: this is a thermostat meant to be looked at, not hidden. The entirely new design is pitched as something closer to wall art than a utility control, and the 3.9-inch dynamic display backs that up by showing extra details like the outside temperature or the time as you approach.

Beyond looks, the most practical upgrade is the room sensor now included in the box. On the 3rd Gen it was a separate purchase. Add an AI-powered Smart Schedule that adjusts your heating and cooling routines, plus installation that doesn't require a C-wire, and this is clearly aimed at homeowners who want a premium, low-fuss smart thermostat and are willing to pay for it.

It's a less obvious fit for current Nest owners. The new base is a different size from earlier Nest bases, so upgrading means removing the old base and doing a full reinstall rather than a simple swap.

On the evidence available, this is a well-rounded flagship. The included sensor adds real value because it lets the thermostat respond to conditions in another room, not just the hallway where it's mounted. Not needing a C-wire widens the range of homes it can go into, and the Smart Schedule continues the hands-off appeal that defined the Learning Thermostat line. Critics broadly agree. WIRED scored it 9/10 and CNET 7.9.

The caveats are mostly about cost and continuity:

• Price: It sits at the expensive end of the smart thermostat market. CNET calls it the most expensive model available. We weren't given an exact price, so we can't judge value precisely, but buyers should expect to pay a premium.
• Upgrade friction: Existing Nest users can't reuse their old base, which makes the upgrade more work than you'd hope for within the same product family.
• App changes: Reports suggest it uses a different app experience from the 3rd Gen's Nest app. That's lower-confidence information, but longtime users should be prepared for some adjustment.

Our assessment rests on a fairly limited set of verified details. We don't have data on energy savings, smart home platform compatibility, or long-term reliability of the AI scheduling, so this rating reflects the design, feature set, and critical reception rather than hands-on testing. Even so, it's an easy recommendation for new buyers who want a premium thermostat. Cost-conscious shoppers, and 3rd Gen owners happy with what they have, can reasonably pass.