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Nest T3021US - 3rd Gen-Pro Learning Thermostat, Wi-Fi Programmable, Copper

Item: T3021US
MFG: T3021US
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Nest T3021US - 3rd Gen-Pro Learning Thermostat, Wi-Fi Programmable, Copper

The Nest Learning Thermostat is designed to be easy to use. It learns what temperatures you like and builds a personalized temperature schedule to help keep you comfortable and help save energy.

Use the ring to control your thermostat
Use it just like a normal thermostat, turn the ring up when you want it a little warmer, and turn it down when you want it a little cooler. Press your thermostat ring towards the wall to open the menu. Turn the ring to select a menu option and press the ring towards the wall to confirm your selection. The Nest Thermostat does not have a touchscreen.

The screen at a glance
You'll be able to tell what your thermostat is doing by the color of the background. The screen will be orange when your heating is on or blue when your cooling is on. When your heating and cooling are idle the background will be black.

  • Built-in rechargeable lithium-ion battery
  • Wall mountable
  • Switch to other temperature modes: Eco Temperatures, Heating vs. cooling, Off mode
  • Learning and scheduling: How it programs itself, Auto-Schedule, Eco Temperatures, Sunblock, Filter reminders, Manual scheduling
  • Display: Take a tour of the screen, Quick View, Time to Temperature, Farsight (3rd Gen)
  • Energy use: Nest Home Report, Nest Leaf, Increase energy savings, Rebates and reward programs, Locking your thermostat
  • Homes and users: Home/Away Assist, Family Accounts, Multiple homes
  • Nest app: Android, iOS, or use a computer. By using the Nest app, you can control your thermostat and view Energy History.
  • 2-Year Limited Warranty
The Nest Learning Thermostat works with 95% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal.
  • Heating: 1, 2, and 3 stages (W1, W2, W3)
  • Cooling: 1 and 2 stages (Y1, Y2)
  • Heat pump: with auxiliary and emergency heat (O/B, AUX, E)
  • Humidifier or dehumidifier (HUM, DEHUM)
  • Fan (G)
  • Power (C, RH, RC)
  • Temperature
  • Humidity
  • Near-field activity
  • Far-field activity
  • Ambient light

Pro Elite Members Only
Enter your Nest Pro ID to activate the following Extended Warranties:
  • 5 year extended warranty (total coverage), Includes 3 year warranty extension + standard 2 year warranty

California residents: see Proposition 65 Warning


picture_as_pdf consumer literature

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picture_as_pdf specification sheet

Features and Specification

ERP ID 371646
Weight 8.600000
Stages Cool 2
Stages Heat 3
System Switching Yes
Temperature Range 32°F to 104°F (0°C to 40°C)
Terminal Designations AUX, C, E, G, O/B, RH, RC, W1, W2, W3, Y1, Y2
UPC 813917020227
Vacation Mode Yes
Voltage 24 VAC
Width 3.300000
Operating Temperature Range 32°F to 104°F (0°C to 40°C)
Power Method Battery and Hard Wired
Package Width 3.300000
Package Weight 8.600000
Package Length 3.300000
Works with Rheem EcoNet No
Removable Interface Yes
Package Height 1.210000
Programmable Fan Yes
Digital-Non Programmable No
Mounting Wall Mount
Daylight Savings Time Ready Yes
Digital Yes
Digital-Programmable Yes
Dimensional Weight 1.000000
Display Yes
Displays Outdoor Temperature Yes
Display Options 24-bit Color LCD
Dual Transformer Compatible Yes
Change/Check Reminders Yes
Electrical Connection Wired
750mV Compatible No
Ambient Temperature Range 32°F to 104°F (0°C to 40°C)
Application Whole House
Auto Changeover Yes
Batteries Included Yes
Battery Backup Yes
Brand Google Nest
Built In Wi-Fi Yes
EAN 0813917020227
Cubic Measurement 0.007600
Electrical Rating 24 VAC
Humidification Yes
Indoor Remote Sensor Yes
Language UK English, US English, Spanish, Canadian French (Québécois), French, Dutch, Italian
Length 3.300000
Heat Pump Compatible Yes
Low Battery Indicator Yes
Manual Yes
Height 1.210000
Fan Switching Yes