Will it work with your system?
Works well with
- Phone control and scheduling
- Systems the maker's checker confirms
Check first if you have
- Line-voltage baseboard heat
- Millivolt gas heaters
What it controls
The Google Nest T4002ES Smart Thermostat is a smart Wi-Fi thermostat. Its listing doesn't spell out which heating and cooling systems it supports, so run the maker's compatibility checker before you buy.
Check your wall for a C terminal: the listing doesn't say whether it needs a C wire. The C wire guide covers adapters.
The listing doesn't state heat pump support; if you have an O/B wire, confirm with the maker before ordering. Heat pump wiring.
Connectivity: Wi-Fi. It google Assistant, Nest.
Not sure of your wiring? The wiring checker reads your system from the terminal letters and checks it against this model's statements.
Also on the listing: dimensions of 2.28 in (D) x 4.8 in (W) x 6.3 in (H), a weight of 12 ounces and a lcd.
Compatibility and specs
These come from the maker's listing for this exact model; the source of each is marked. Anything the maker leaves out is marked not stated.
| Model number | T4002ES | Retailer |
|---|---|---|
| Model name | A0063 | Retailer |
| Dimensions (seller) | 2.28"D x 4.8"W x 6.3"H | Retailer |
| Works with | Google Assistant, Nest | Retailer |
| Features (seller) | Programmable, Auto-Scheduling, Remote Access, Smart Home Integration, Energy Usage Tracking | Retailer |
| Connectivity | Wi-Fi | Retailer |
| Power | Battery Powered | Retailer |
| Voltage | 24 V | Retailer |
| Display | LCD | Retailer |
| Mounting / installation | Wall Mount | Retailer |
| Batteries | 1 AAA batteries required. | Retailer |
| Product weight | 12 ounces | Retailer |
| Material | Polycarbonate | Retailer |
| C-wire | This unit is designed to work even if your home has a C-wire, but you may have to install a new one | Retailer |
Strong points and weak points
Strong points
- Works with Google Assistant, Nest
Weak points
- C-wire need not stated
- Needs Wi-Fi for smart features
Wiring and install notes
- Compatibility statements are the maker's own. Confirm with the maker's compatibility checker, turn the power off before wiring, and leave line-voltage and furnace work to a licensed electrician or HVAC technician.
Thermostats to compare it with
FAQ
Does the Google Nest T4002ES Smart Thermostat need a C wire?
Does the Google Nest T4002ES Smart Thermostat work with a heat pump?
Other smart thermostats with similar wiring
- Sensi ST25 Smart Thermostat
- Levoit LTM-A401S-WUS Smart Thermostat
- Honeywell Home RCHT8610WF2006/W Smart Thermostat
- Honeywell Home RCHT8612WF Smart Thermostat
All smart thermostats in one grid · Every Google Nest control listed
Our take
A fit for phone control and scheduling.
Where to get it
The link goes to this exact model's listing. Check that the box includes the trim plate or C-wire adapter you need, and confirm your wiring with the maker's compatibility checker before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure