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The verdict in 90 seconds
The Google Nest Thermostat (2020) is the right buy for a straightforward single-stage furnace and AC system in a household that already uses Google Home, and the wrong buy for almost everyone else. It costs roughly half what the Learning Thermostat does and looks better than anything near its price, but it does not learn a schedule, it does not accept remote room sensors, and its compatibility list is noticeably narrower. The owner rating sits lower than Nest's reputation would suggest, and the gap is almost entirely installation and app friction rather than day-to-day performance.
Best for a simple single-stage system in a household that already lives in Google Home
- Schedule suggestions rather than full auto-learning
- Soli motion sensing wakes the display as you walk up
- Controlled entirely from the Google Home app
- ENERGY STAR certified with a monthly savings summary
Why buy it: it is the cheapest way into the Nest ecosystem, and for a plain furnace-and-AC house it does everything the expensive one does.
What owners consistently praise
Three themes repeat across the positive reviews. The first is the hardware itself. At around 130 dollars this is a mirrored glass disc that looks deliberate on a hallway wall, in four finishes, and owners routinely describe it as the best-looking thing at its price. The Soli radar sensor wakes the display as you approach and shows the temperature at a glance, which sounds like a gimmick and turns out to be the feature people mention most.
The second is installation on simple systems. On a conventional gas furnace with air conditioning and a C wire present, the consensus is that this is a 20-minute job with a screwdriver and the app walking you through it. The trim plate in the box covers most old thermostat footprints, which saves a paint touch-up.
The third is the everyday Google Home experience. Owners who already run Google speakers report that voice control works reliably, that Home and Away routines using phone location behave sensibly, and that the monthly energy summary is genuinely useful — it is the feature most likely to change a habit, because it shows the cost of the days you left it at 72°F all afternoon.
What owners actually complain about
This is where the 4.2 average comes from, and the complaints are consistent enough to be predictable.
Compatibility discovered at the wall, not at checkout. This is the dominant negative theme by a wide margin. The 2020 model dropped support that the Learning Thermostat had, and owners of heat pumps with auxiliary heat, dual-fuel setups, multi-stage furnaces and zoned systems report getting to the wiring step and finding their configuration unsupported or requiring the separately sold Nest Power Connector. It is a house-and-equipment problem rather than a defect, but it produces a genuinely bad first day and a return.
No learning, despite the name on the box. A steady stream of reviews are from buyers who assumed any Nest builds its own schedule. This one suggests changes and waits for you to approve them in the app. Owners who bought it precisely because they never program a thermostat end up with an expensive manual thermostat.
The touch strip. Instead of a rotating ring, the 2020 model has a capacitive strip on the right edge. Owners describe overshooting the target temperature, unregistered swipes, and difficulty using it in the dark. It is not a dealbreaker so much as a daily small irritation, and it appears in a lot of three-star reviews.
App-only scheduling and account friction. Everything meaningful happens in Google Home. Households where one person has the app and everyone else does not find the thermostat harder to use than the dial it replaced. Owners migrating from the older Nest app describe the move as clumsy, and a minority report the thermostat dropping off Wi-Fi after a router change and needing a full re-add.
Display and sensor reliability over time. A smaller but persistent group report the screen failing to wake, the Soli sensor becoming unresponsive, or the unit going offline after a year or two. It is not the majority experience, but it is frequent enough that the one-year warranty — half the Learning Thermostat's two years — comes up often in reviews.
Who it suits, and who should buy something else
Buy it if you have a conventional single-stage furnace and AC with a C wire, you want remote control and automatic setbacks for the lowest sensible price, and you are already in the Google ecosystem.
Buy the Nest Learning Thermostat instead if the actual problem is that nobody in your house programs anything. The auto-schedule and the wider equipment support are what you are paying the extra for, and in a household with an irregular routine it pays back.
Buy an ecobee instead if one room is always the wrong temperature. The ecobee Smart Thermostat Enhanced supports remote SmartSensors and includes a Power Extender Kit for houses with no C wire; the Premium adds a sensor in the box.
Buy a Sensi instead if your wiring is old and awkward — the Sensi ST55 runs without a C wire on most common systems and has one of the highest installation-success records in the category.
Buy the Amazon Smart Thermostat instead if price is the only consideration and you have confirmed a C wire — see our Amazon Smart Thermostat review. The full field is ranked in our best smart thermostat guide.
Specifications
| Spec | Google Nest Thermostat (2020) |
|---|---|
| Display | 2.4 in. LCD behind a mirrored polycarbonate front |
| Dimensions | 3.3 in. diameter, 1.07 in. deep |
| Scheduling | Suggested schedules in the Google Home app; no auto-learning |
| Occupancy sensing | Soli radar (display wake) plus phone-location Home and Away |
| Remote sensors | Not supported |
| C wire | Required on many systems; Nest Power Connector sold separately |
| Voice control | Google Assistant and Alexa (via app); no built-in microphone |
| App | Google Home only |
| Certification | ENERGY STAR |
| Warranty | 1 year limited |
The bottom line
Judged as a 130 dollar thermostat rather than as a cut-price Nest, it is a good product: attractive, easy to live with on a simple system, and honest about the savings it delivers. Judged against the expectations its name creates, it disappoints a predictable slice of buyers — the ones with heat pumps, uneven houses, or a firm belief that it will learn. Check your wiring, check your equipment type in Google's compatibility tool, and check whether your utility offers a rebate before you order.
Check price on Amazon → (paid link)
Next: see whether the category earns its keep at all in are smart thermostats worth it, work out the install in can you install a smart thermostat yourself, compare the tiers in smart vs programmable thermostats, or start from the heating and cooling hub.