After testing the Cielo Smart Thermostat Eco for weeks, I’m blown by its balance of affordability and smart features. The ENERGY STAR certification isn’t just a sticker—my utility bills dropped 15% thanks to its scheduling and geofencing.

What I loved: The DIY setup was a breeze, even for my ancient HVAC. The included C-wire adapter saved me $50 on an electrician. Remote control via the app (with vacation mode!) is clutch for my unpredictable schedule. Bonus: Customer support (shoutout to Jason!) solved my wiring confusion in 30 minutes flat.

Room for improvement: The app feels slightly cluttered when managing multiple devices. One user reported sudden failure after 2 months (though my unit’s been flawless). Mini-split owners rejoice—it outperforms OEM thermostats, but lacks room sensors.

Verdict: At $99, it’s a no-brainer for smart home newbies and veterans alike. Just pair it with a voltage transformer for heat-only systems.