Google Nest Learning Thermostat

(4TH GEN) WITH NEST TEMPERATURE SENSOR (2ND GEN) Programmable smart thermostat with occupancy-based setbacks, remote access, and proactive HVAC monitoring to support measurable energy savings. The most advanced thermostat with improved learning features.

Specification Sheet

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Colors	Polished Silver, Polished Obsidian, Polished Gold
Dimensions and Weight	3.9” (W) x 1.1” (D) x 3.9” (H); 5.7oz
Connectivity	Wi-Fi 802.11n (2.4 GHz / 5 GHz)
Display	2.68 in diameter Circular liquid crystal display (600x600 pixels)
Sensors	Soli sensor for Motion Sense Humidity Ambient light Temperature
Power	Voltage: 20-30VAC Startup current: 4VA Standby current: 2VA Power source: HVAC system wiring Battery: Built-in rechargeable lithium
Compatibility	Compatible with 85% of households: • 24V heating and cooling systems, including furnaces, air conditioners, boilers, and heat pumps with either forced air or radiant delivery. • Conventional systems that have one stage of heating and cooling and a second stage of either heating or cooling. • Heat pumps that have one stage of heating and cooling and either aux or emergency heat. • HVAC fans. • The Nest Thermostat is designed to work if your home doesn’t have a common (“C”) wire. In some cases, particularly if you have a heating- or cooling-only system or use a zone controller, a C wire or other power-supply accessory may be necessary.5
HVAC System Compatibility	Works with most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant. It can control: Heating 1, 2, and 3 stages (W1, W2, W3) Cooling 1 and 2 (Y1, Y2) Heat pump with auxiliary and emergency heat (O/B, AUX, E) Fan (G, G2, G3) Power (C, RH, RC) Humidifier and Dehumidifier (HUM, DEHUM) Ventilation (VENT) The Nest Learning Thermostat’s terminal can accept one of these wires: W3, E, HUM, or DEHUM. The AQ+ and AQterminals can accept 1-wire or 2-wire, VENT, HUM, or DEHUM
Power Compatibility	Patented Power Sharing Technology Designed to work whether or not your home has a common “C” wire. In limited cases (<1%), a C wire or Nest Power Connector is necessary to ensure that your HVAC system can provide su cient power to the thermostat in all conditions.