A thermostat that learns when you leave the house and turns itself down automatically is the kind of upgrade that pays for itself on the energy bill over time, and Prime Day just made it easier to justify. Amazon has the Google Nest Thermostat at $89, off its $129 standard price and a near record low for this ENERGY STAR certified smart thermostat with Wi-Fi control, schedule learning, HVAC monitoring, and Google Home integration. This deal requires Prime membership, and the 30-day trial has no card requirement.
Turns itself down when you leave, back up when you return
The most useful thing the Nest Thermostat does is also the simplest: it detects when the home is empty and adjusts the temperature automatically to stop heating or cooling a space nobody is in. For a household where the schedule varies, where people forget to adjust the thermostat before leaving, or where the heating and cooling system runs on a fixed schedule that doesn’t account for actual occupancy, that single feature consistently reduces energy consumption in a way that a programmable thermostat without presence detection can’t match.
Savings Finder goes further by analyzing your existing schedule and suggesting adjustments that reduce energy use without affecting comfort. It looks for periods where the heating or cooling is running harder than necessary and proposes tweaks through the Google Home app, which you can accept or ignore. Over a full heating and cooling season, those incremental adjustments add up to meaningful reductions on the energy bill without requiring any ongoing management from you.
The remote control functionality lets anyone in the household adjust the temperature from a phone, laptop, or tablet from anywhere with an internet connection. Forgot to turn down the AC before a weekend away? Open the Google Home app and adjust it from wherever you are. Google Assistant and all Matter-certified voice assistants handle voice control for in-home adjustments, and the Savings Finder suggestions integrate with energy provider rebate programs in some regions for additional savings beyond the thermostat’s own optimizations.
HVAC monitoring and near record low pricing
The Nest Thermostat monitors your heating and cooling system continuously and sends alerts if something doesn’t seem right, along with maintenance reminders for filter changes and system checkups. Catching an HVAC issue early through an alert is the kind of background monitoring that can prevent a minor maintenance problem from becoming an expensive repair, and it runs passively without requiring any setup beyond the initial installation.
Installation works without a C wire in most homes, which is the wiring requirement that makes some smart thermostat installations complicated. Google’s online Nest Compatibility Checker confirms compatibility before purchase for anyone unsure about their system. Systems with heating only, cooling only, zone control, or heat pumps may require a C wire or compatible power accessory, so checking compatibility first is worth the two minutes it takes.