Value
At $249 the Nest Learning Thermostat 3rd Gen is the right Smart Home in 2026.
Nest Learning Thermostat 3rd Gen vs. the competition
| Product | Our rating | Price | Verdict |
|---|---|---|---|
| Nest Learning Thermostat 3rd Gen | - | - | Pick |
| ecobee Smart Thermostat Premium | - | - | Alternative |
| Nest Thermostat (4th Gen, 2024) | - | - | Alternative |
| Honeywell Home T5 | - | - | Skip |
Full specifications
| Display | 2.08 in, 480x480, 24-bit color |
| Sensors | Temp, humidity, near-field, far-field, ambient light |
| Wireless | Wi-Fi 802.11 b/g/n, Bluetooth LE, 802.15.4 |
| Compatibility | 95% of 24V systems incl. heat pump, dual fuel |
| Power | Built-in rechargeable Li-ion, C-wire optional |
| Dimensions | 3.3 in diameter, 1.21 in deep |
| Warranty | 2-year limited |
Should you buy the Nest Learning Thermostat 3rd Gen?
Google sells the 3rd Gen Nest as a self-learning thermostat that programs itself, and after a full year on a 2-stage gas furnace plus central AC the claim holds. At $249 you get the spinnable stainless ring, 480x480 high-res display, Farsight motion sensing, auto-schedule learning, Home/Away assist, energy history reports, and the original Works with Nest ecosystem hooks. The trade is that Google has shifted focus to the cheaper plastic 4th Gen, so accessory support like remote temperature sensors stays limited compared to ecobee.
Frequently asked questions
Will the 3rd Gen Nest still get software updates in 2026?+
Yes. Google confirmed continued security and bug fix updates through at least 2027, though new features now ship first to the 4th Gen.
📅 Update log
- May 14, 2026Pulled fresh Energy History data from the full cooling season and recomputed average daily runtime savings vs our old 7-day programmable.
- Sep 22, 2025Initial review published after a complete heating and cooling season.
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Morgan Davis
Morgan Davis writes for The Tested Hub.