Google Nest Thermostat E T4000ES - 85% HVAC Compatibility

Google Nest Thermostat E T4000ES is a round smart thermostat with a 3.19-inch diameter, a 1.14-inch height, and a 4.9-ounce mass. Its frosted front presents a compact 24-bit color LCD for temperature and system information.Google's specifications list the dimensions and display details.

Compact Hardware And Display

The T4000ES uses a 320 x 320 display with 182 pixels per inch and a 4.5-centimeter diameter. Temperature, humidity, proximity, occupancy, ambient light, and ring-position sensors support the thermostat's control interface.

The unit has a built-in rechargeable lithium-ion battery and consumes less than 1 kWh per month. Wireless hardware includes 802.11 a/b/g/n Wi-Fi on 2.4 GHz and 5 GHz bands, 802.15.4 at 2.4 GHz, and Bluetooth Low Energy.

HVAC Compatibility And Installation

Nest Thermostat E is designed for 24V heating and cooling systems and is rated for 85% of those systems. Supported equipment includes gas, electric, forced-air, heat-pump, radiant, oil, hot-water, solar, and geothermal systems.

The wiring specification covers one stage of heating on W1, one stage of cooling on Y1, and a second stage of either heating on W2 or cooling on Y2. Heat-pump systems can use auxiliary and emergency heat through O/B and AUX, while fan and power connections use G, C, Rh, or Rc terminals.

The thermostat can work without a common C wire, although a new C wire may be required for some installations. Google lists a phone or tablet running iOS or Android, a Wi-Fi internet connection, and the Nest app among the setup requirements.

Box Contents And Certification

The package includes the Nest Thermostat E, Heat Link E, power adapter, display, base, trim plate, screws, terminal blocks, installation guide, quick-start guide, welcome guide, and warranty materials. The device carries UL 60730-1, UL 60730-2-9, and ENERGY STAR certifications.

Position In The Nest Lineup

The Thermostat E sits below newer Nest thermostat hardware in display resolution and system coverage. Its 320 x 320 screen and 85% compatibility figure make it a simpler choice than the current Nest Thermostat, whose official listing shows a 2.4-inch 240 x 320 display and a $129.99 price.

Home Depot lists the T4000ES at $169.00 and identifies the model number as T4000ES.The retailer also lists remote control, alerts, and temperature-learning features. The model fits households with compatible 24V HVAC equipment, while dual-fuel installations call for professional installation.