For homes where upstairs bedrooms fight the living room, this ecobee smart thermostat uses remote sensors to balance the air. Short ecobee smart…

By Jonah Reeves · Home editor · Home desk · Gadget Evaluator Lab

Jonah wouldn't reorder this if… Pick the unit that lists remote sensors in the title. This stops the temperature conflict between floors without guessing.

The chore is that the living room is too warm while the upstairs bedrooms stay cold, or vice versa. A single wall unit cannot see both spaces, so the HVAC system overcorrects for one area and neglects the other.

Look for the phrase 'Remote Sensors' in the product title on Amazon. This confirms the unit includes the extra hardware needed to average out the temperature differences between your floors.

1. Best overall: 18/8 Thermostat Wire 20FT, 18 AWG 8-Conductor Solid Bare Copper…
2. Best value: ecobee4 Smart Thermostat with Built-in Alexa, Room Sensor Included
3. Upgrade pick: Wall Plate for Ecobee Smart Thermostat Essential (1, Gravel Gray)
4. Lighter option: Smart Thermostat Enhanced, Programmable Wifi Thermostat
5. Spare to keep: Comfort and Security Bundle, Smart Thermostat Premium & SmartSensor
6. Check the size: Black Thermostat Decorative Wall Plate Bracket Compatible with New…
7. Worth a second look: Nest Learning Thermostat (4th Gen, 2024) with Nest Temperature…
8. Only if it fits: ecobee3 Lite Smart Thermostat with Whole Home Sensors Bundle

Best overall

18/8 Thermostat Wire 20FT, 18 AWG 8-Conductor Solid Bare Copper…

What fitsThis 20-foot spool of 18 AWG 8-conductor solid bare copper cable is rated CL2 for in-wall installation, providing the physical backbone needed to connect a central unit to distant rooms.

What to checkThe 8-conductor design ensures enough pathways for power and signal, which is critical when wiring a system that must communicate with sensors located far from the main panel.

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Best value

ecobee4 Smart Thermostat with Built-in Alexa, Room Sensor Included

What fitsThe ecobee4 comes with one room sensor included in the box, which is the minimum hardware required to start balancing temperature differences between the living room and an upstairs bedroom.

What to checkThe built-in Alexa voice control is a secondary feature, but the primary value for this specific job is the ability to add a second sensor later if the single included unit is not enough to cover both conflicting zones.

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Upgrade pick

Wall Plate for Ecobee Smart Thermostat Essential (1, Gravel Gray)

What fitsThis Gravel Gray wall plate is designed specifically for the Ecobee Smart Thermostat Essential, covering the mounting area to match your interior decor.

What to checkIt is a cosmetic accessory that does not add any sensing capability or change the temperature logic of the unit behind it.

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Lighter option

Smart Thermostat Enhanced, Programmable Wifi Thermostat

What fitsThis programmable Wi-Fi thermostat is a general-purpose unit that connects to your home network to allow remote adjustments.

What to checkIt lacks the specific multi-sensor architecture that is the focus of this page, meaning it relies on a single internal temperature reading to make decisions.

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Spare to keep

Comfort and Security Bundle, Smart Thermostat Premium & SmartSensor

What fitsThis bundle pairs the Smart Thermostat Premium with a SmartSensor, giving you the hardware needed to monitor two distinct areas simultaneously.

What to checkThe inclusion of the sensor in this specific package is what allows the system to weigh the temperature in a bedroom against the living room to prevent one zone from overheating while the other stays cold.

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Check the size

Black Thermostat Decorative Wall Plate Bracket Compatible with New…

What fitsThis black decorative bracket is compatible with the 2022 Ecobee Smart Thermostat Premium and Essential models, serving as a visual cover for the mounting plate.

What to checkIt does not contain any electronic components or sensors and is purely an aesthetic addition to the installation.

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Worth a second look

Nest Learning Thermostat (4th Gen, 2024) with Nest Temperature…

What fitsThe Nest Learning Thermostat 4th Gen includes a Nest Temperature Sensor, which is a separate device that can be placed in a different room to provide a secondary reading.

What to checkThis setup allows the system to account for the temperature in an upstairs bedroom when making adjustments for the living room, reducing the conflict between the two zones.

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Only if it fits

ecobee3 Lite Smart Thermostat with Whole Home Sensors Bundle

What fitsThe ecobee3 Lite comes with a Whole Home Sensors Bundle, which typically includes multiple sensors to monitor different areas of the house.

What to checkThis is a direct solution for the temperature conflict issue, as the system can use data from a bedroom sensor to adjust the heating or cooling for the living room.

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