Model: GA05169-US
from $279.99
The Google Nest Learning Thermostat (4th Gen) in Polished Obsidian is a smart thermostat designed for efficient climate control in your home or office. This ENERGY STAR certified device features a 3.9-inch diameter, a 600x600 backlit display, and is controlled via touch. It learns your preferences and automatically adjusts settings based on its motion, temperature, humidity, and ambient light sensors, helping to optimize energy usage with less than 1 kWh/month power consumption. The thermostat is Wi-Fi and Bluetooth compatible, allowing for app control, and includes a Nest Temperature Sensor (2nd gen) for enhanced comfort.
Check your existing wiring before buying. Smart thermostats highly prefer a 'C-wire' (Common wire) for continuous power, otherwise they must steal power or rely on disposable batteries. Available from $279.99.
The device itself costs pennies to power. The true 'cost' of a smart thermostat is the investment return; a properly programmed one saves 10-15% on annual HVAC costs.
Common Failure Modes
Smart thermostats can suffer from Wi-Fi chip failure or internal battery degradation. On older models, mechanical relays can stick, causing the AC or heat to run continuously.
Check your existing wiring before buying. Smart thermostats highly prefer a 'C-wire' (Common wire) for continuous power, otherwise they must steal power or rely on disposable batteries.
A thermostat typically lasts 10 to 15 years for programmable models and longer for simple mechanical models. Smart thermostats may have shorter lifespans of 5 to 10 years due to software obsolescence and battery degradation. Signs of end-of-life include unresponsive controls, incorrect temperature readings, the HVAC system not responding to setting changes, and Wi-Fi connectivity issues on smart models.
The Google Nest Learning Thermostat (4th Gen), Polished Obsidian is available at abt, microcenter, starting at $279.99.
The device itself costs pennies to power. The true 'cost' of a smart thermostat is the investment return; a properly programmed one saves 10-15% on annual HVAC costs.
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