Amazon Smart Thermostat
The verdict
Built on Honeywell's HVAC hardware, Energy Star certified, and it pays for itself in energy savings. C-wire required — check your wiring (or ask an installer) before buying.
Amazon Smart Thermostat — about $79.99 (often ~$60 on sale) · 4.0★ from ~24,900 reviews · honest blind-shopper read: there is no touchscreen — it's a plain white square, and ALL control runs through Alexa voice or the app. "Alexa, set the heat to 72" beats squinting at any display. Alexa Hunches auto-adjusts when the house is empty.
It needs Alexa to shine; without an Echo nearby you're stuck in the app. And the C-wire requirement kills it for some older homes. At $60–$80 it's the budget anti-funnel to the Nest and Ecobee picks.
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Last reviewed: October 2026.