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Two round Polished Obsidian thermostats with borderless displays and dial controls

Google

Google Nest Learning Thermostat 4th Gen 2-Pack Polished Obsidian

SKU CH-XZ5C-DEVMA

A learning thermostat with borderless display, smart scheduling and HVAC monitoring sold as a two-pack with temperature sensors

  • Main colorStainless Steel
  • Control methodDial, Manual, Phone Controlled
  • Rated voltage24 V
  • Connected home protocolWi-Fi
  • Thermostat typeHeating and Cooling
  • Product typeLearning Thermostats
  • Learns your schedule to optimise comfort automatically
  • Borderless display shows key info from across the room
  • System Health Monitor alerts you to HVAC issues early
  • Smart ventilation brings fresh air when conditions are right
  • Energy Shift moves usage to cleaner or cheaper times

What this thermostat does and who it suits

This pack includes two fourth-generation Nest Learning Thermostats in Polished Obsidian plus two second-generation temperature sensors. They suit homeowners who want a self-programming schedule and room-level comfort control without daily manual adjustment.

Practical limits of the Wi-Fi interface

The thermostats connect over standard 24 V wiring and Wi-Fi, so they require a compatible heating and cooling system and a stable wireless network. Homes without a C-wire or with proprietary control boards may need professional assessment before installation.

The specification that decides fit

The 2.08-inch square borderless display with Dynamic Farsight shows target temperature, weather or a clock from across the room. If that screen size and glanceable information match your wall location, the kit is the right choice.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $219.99
Pricier than about 86% of the 286 comparable items (median $78.49).

Specifications

Product
Brand nameGoogle
Model nameNest Learning Thermostat (4th Gen)
Product typeLearning Thermostats
Product colorPolished Obsidian
Main colorStainless Steel
Connectivity
WifiYes
Power
Rated voltage24 V
Size & build
Size or dimensionsH : 2.08 in , W : 2.08 in , D : 1.1 in
In the box
Number of items2 pack
More details
Control methodDial, Manual, Phone Controlled
Connected home protocolWi-Fi
Thermostat typeHeating and Cooling

Questions about this item

Should I choose the single unit or the 2-pack for a multi-zone home?

The 2-pack includes two Nest Learning Thermostats and two 2nd Gen Temperature Sensors, letting you control separate zones and measure temperature in the rooms that matter most.

What does the 24 V requirement mean for my existing wiring?

It needs a standard low-voltage HVAC system with a common wire or compatible power adapter; most forced-air and heat-pump systems meet this.

What does the Wi-Fi connection actually let me do day to day?

It enables remote control from the Google Home app, automatic software updates, Energy Shift scheduling, and System Health Monitor alerts sent to your phone.

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