Every smart thermostat on the market can be scheduled and controlled from your phone — that part’s solved. What separates them is how they handle the room your thermostat isn’t in, whether you want voice control built in, and how much you’re willing to pay for either. These three cover the real range: a room sensor and built-in Alexa/Siri at a mid-range price, an industry-leading auto-scheduling brand at a similar price, and a no-frills budget pick that still gets the core job done.
Key Takeaways
- Ecobee is the top pick for homes with a hot or cold room — its included SmartSensor balances comfort between two rooms instead of just where the thermostat is mounted
- Nest is the strongest choice if you want the thermostat to build its own schedule automatically and want to keep your ecosystem options open (Google Home, Alexa, or HomeKit)
- The Amazon Smart Thermostat is the budget pick — under $90, ENERGY STAR certified, and simple if you're already an Alexa household
- Ecobee and Nest are priced similarly around $230–$250; the Amazon pick costs about a third of that
- None of the three require a subscription for core scheduling and remote control
How We Compared Them
If a hot upstairs bedroom or a cold basement office is the actual problem you're trying to solve, Ecobee's Smart Thermostat Premium is the one built for it — the included SmartSensor lets the thermostat weigh a second room instead of just the hallway, and it throws in Alexa and Siri built into the unit itself. If you'd rather have the thermostat learn your schedule automatically and don't need room-by-room sensing, Google Nest's Learning Thermostat is the more established, ecosystem-flexible choice, working with Google Home, Alexa, and HomeKit alike. And if you mostly want reliable remote control, real ENERGY STAR savings, and Alexa compatibility without paying a premium, the Amazon Smart Thermostat gets you there for a fraction of the price.
