Best Multi-Room Smart Thermostat

Photo of Smart thermostats

Anyone would agree that a home has multiple zones that require a special smart thermostat for the heating and cooling system. These zones include bedrooms, kitchen, and living room, among other zones in your house. With multiple zones in your smart home, you will require a multi-room smart thermostat to heat every zone efficiently to meet your desired temperature settings.

An ordinary smart thermostat will treat your smart home as a single zone. And such a smart thermostat will not achieve specialized heating for each room in your home. As such, you want to invest in a multi-room smart thermostat to give each zone in your home special heating needs.

This review looks at some of the best multi-room smart thermostats to consider buying. It also looks at a few things to consider when buying these smart home systems and answers some questions you might have about smart thermostats. So, be sure to read on for more information.

What Are Some of The Best Multi-Room Smart Thermostats?

Ecobee3 Smart Thermostat

This smart thermostat comes with three room sensors for managing the hot and cold spots in your smart home. The sensors detect temperature changes, allowing you to make the right adjustment for a temperature setting you deem fit for your three zones (rooms). The room sensors also detect if no one else is in a room, allowing the smart thermostat to stop heating or cooling the said room. And this saves heating or cooling costs.

This smart thermostat is compatible with any residential HVAC system. It lets you control your residential space temperature using your preferred voice assistant. Connect this smart thermostat with voice assistants such as Amazon Alexa, Apple HomeKit, and Google Assistant to control your HVAC system through voice commands.

You could also control the temperature setting on this smart thermostat using Microsoft Cortana. As such, you have plenty of options when it comes to voice assistants. The smart thermostat also works with smart hubs such as Samsung Smartthings, IFTTT, and Wink to control your temperature settings remotely. Since this is an ecobee smartthermostat with voice control compatibility, you don’t have to get off the sofa to select your preferred temperature.

Select a voice control device such as amazon echo and ask Alexa to select a given temperature. Installation is quite easy, and you’ll complete it in 30 minutes or less. It doesn’t require a c wire. Instead, use the power extender kit to power up your smart thermostat. It is an excellent smart thermostat for heating or cooling three rooms efficiently and saves you 23% of energy cost.

Three room sensors.Unresponsive customer support.
Remote temperature control.Set-up is a bit challenging.
It supports voice control.
Best Multi-Room Smart Thermostat Reviews

Honeywell T9 WIFI Smart Thermostat

Honeywell T9 is a powerful smart thermostat for controlling the temperature of all the rooms in your smart home. It works with motion sensors to detect zones with no one inside them for economical heating and cooling. As a result, it is one of the smart thermostats that save you money.

It also works with room sensors to detect the cold or hot spots that require you to adjust the temperatures. With the room sensors in all the rooms whose temperatures you’re looking to regulate, you can be sure to have your preferred temperature in all the zones in your smart home.

Controlling the temperature is also convenient and efficient. You could use the smart thermostat’s touch screen display to select your preferred temperature. Alternatively, you could use the Honeywell Home app, especially for remote temperature control.

The smart thermostat connects to your Wi-Fi network, enabling it to communicate with various voice controls. As a Wi Fi thermostat, you can connect it to the Wi-Fi network that your Alexa or Google Assistant is connected to and gain voice control over it. The built-in Wi-Fi connectivity also makes remote control possible, just as we’ve already seen.

Besides, you get three smart room sensors if you opt for this smart thermostat. And this makes this smart thermostat ideal for controlling the temperature of at least three rooms effectively. It keeps you safe by alerting you when your air filters aren’t working properly or when your room is experiencing extreme temperature change.

Touchscreen display.Non-rechargeable batteries.
It supports multiple voice controls.The app has no support.
Three room sensors.
Best Multi-Room Smart Thermostat Reviews

Emerson Sensi Wi-Fi Smart Thermostat

If you’re looking to control your home temperature from anywhere, you should consider this smart thermostat. It gives you remote temperature control via its mobile app – the Sensi mobile app. Once you’ve downloaded this app on your smartphone or tablet, you can always customize your home comfort even if you’re miles away.

It also alerts when your heating and cooling system has issues before they become a problem. Yes, you will receive smart alerts about extreme temperature or change in humidity level. As such, this is a smart thermostat you want to invest in, especially if you’re looking to keep your HVAC system working at its best all the time.

The smart thermostat works with various conventional heating and cooling systems. These systems include gas furnaces, air conditioners, and electric furnaces, to mention a few HVAC systems. It also works with room sensors to help you control the temperature of all the rooms in your smart home.

The room sensors inform the smart thermostat about the rooms that need more heating or cooling, depending on who’s inside the rooms. As a result, your smart thermostat will control the HVAC system to only heat or cool rooms that need comfort the most (rooms with people inside).

What’s more, you could add voice controls to this smart thermostat. Connect Amazon Alexa to the same Wi-Fi network as this smart thermostat and tell Alexa to select the right temperature for a given room. Installation is also easy. Power up this smart home device from batteries or use the power adapter. It is an excellent heating or cooling solution for any smart home.

It saves 23% of energy cost.No touchscreen display.
It supports various voice controls.Unresponsive customer support.
Remote control.
Best Multi-Room Smart Thermostat Reviews

How Should You Select the Best Multi-Room Smart Thermostat?

Finding the best multi-room smart thermostat on the market depends on considering certain features when shopping. Be sure to keep your eyes on the following features when buying smart thermostats:

Room Sensors

Multi-room smart thermostats rely heavily on room sensors to customize the comfort in all the zones. The room sensors also have motion sensors for detecting unoccupied zones or rooms. As a result, the room sensors communicate with your smart thermostat to turn down the heating or cooling of unoccupied zones.

You will then reduce your heating and cooling cost since your HVAC system will only heat occupied zones. Therefore, make sure you’re buying smart thermostats that include room sensors if you want to customize the comfort in all the rooms in your smart home.

Auto-Away Mode

One reason for installing smart thermostats is to reduce the heating and cooling cost in your smart home. Another reason is to control your residential space temperature remotely from anywhere. The Auto-Away mode helps your smart thermostat heat or cool your residential space only when someone is in your residence.

What’s more, the Auto-Away mode also works with algorithms to learn when you’re usually away. And as a result, the smart thermostat instructs the HVAC system to automatically stop the heating or cooling process, saving you money in the process. The Auto-Away mode is a significant feature that a smart thermostat should have. Therefore, consider buying multi-room smart thermostats with an Auto-Away mode.


Geofencing is the virtual perimeter you set around your smart home for your smart thermostat. The smart thermostat always detects the presence of your smartphone when you’re within the virtual perimeter you’ve set.

If the smart thermostat detects that your phone is outside this perimeter, it powers down your HVAC system to stop the heating or cooling process. As a result, it helps you save money. But when the smart thermostat detects your presence within the perimeter, your HVAC system starts customizing your indoor temperature how you like it. Therefore, geofencing technology is a feature to check for when shopping for smart thermostats.

Some thermostats even detect when you’re on your way home and start customizing your comfort. But you will need to always have your phone with you since the smart thermostat needs your phone’s GPS to know where you are.

Remote Control

Another reason for installing a smart thermostat is to give you control of your HVAC system no matter where you are. Fortunately, smart thermostats connect to your home’s Wi-Fi network to allow you to control them from anywhere via a mobile app.

Some smart thermostats even work with smart hubs such as Smartthings hub and IFTTT to give you remote control over your HVAC system. But these smart thermostats require you to buy a hub for controlling them remotely. You might want to customize your residential space comfort while away. In this situation, remote control is a feature to look for in multi-room smart thermostats.

Voice Control Compatibility

Selecting your ideal temperature setting by voice is convenient, especially if you’re in the middle of something else. Smart thermostats could work with voice controls to allow you to select a given temperature by issuing voice commands.

But these smart thermostats require a connection to your home’s Wi-Fi network to communicate with your voice assistant. They also need Bluetooth connectivity to communicate with your smart home assistant.

So, make sure you’re buying smart thermostats with built-in Wi-Fi and have Bluetooth connectivity. Always check if a smart thermostat is compatible with various voice assistants to give you voice control over your HVAC system.

The Design

When discussing the design, you want to select a smart thermostat with a touchscreen display for an alternative temperature control method. The touchscreen display will also help you set up the smart thermostat with ease.

You could also buy a smart thermostat that uses batteries and a C-wire for electrical energy needs. The C-wire provides low-voltage power from the mains while the batteries take over if there is a power failure. Always select a design that works best for you. There are plenty of designs when it comes to smart thermostats. So, finding a design that impresses you is never quite a challenge.

Ease of Installation

There is a possibility you might want to install the smart thermostat by yourself. And this is great, especially if you love DIY projects. But still, you want to choose a smart thermostat that is easy to install. Fortunately, you can find smart thermostats with in-app videos to guide you on installing your smart thermostat. These are the types to select. Also, consider smart thermostats with a detailed instructional manual for easy installation.


Photo of Smart Thermostats

How does a multi-room smart thermostat work?

These smart thermostats have room sensors to help them know which rooms need heating or cooling more. The room sensors detect the rooms with occupants. And in return, they tell the smart thermostat to initiate a heating or cooling process that your HVAC system will perform. So, the room sensors help multi-room smart thermostats achieve ideal temperatures in the selected rooms.

How does a multi-room smart thermostat work with voice assistants?

These smart thermostats have built-in Wi-Fi that they use to connect to your home’s Wi-Fi network. Since your preferred voice control device will also be connected to the same Wi-Fi, it can communicate with your smart thermostat.

You will add the right skills to your voice control speaker and command it to select a given temperature setting. Voice controls could also pair with your smart thermostat via Bluetooth, allowing you to have voice control over your home’s temperature settings.

Do multi-room smart thermostats need AC power?

Multi-room smart thermostats also need electrical power like any other smart home device you might have in your home. But smart thermostats need DC electrical power. As such, they mostly use battery power for their operational needs.

Even if you’re powering your smart thermostat from an AC power outlet through its power adapter, the smart thermostat will still convert the AC to DC electrical power for its operation. So, your smart thermostats need DC power. But the power adapter ensures the AC power from your wall outlet converts to DC for your smart home device.

Does a smart thermostat reduce my heating or cooling cost?

If you’re looking for excellent energy savings when it comes to running your HVAC system, you should invest in a multi-room smart thermostat. A multi-room smart thermostat uses room sensors to know which rooms don’t have occupants. As a result, the smart thermostat stops the heating or cooling of unoccupied rooms. And the result is reduced HVAC-running cost.

Do multi-room smart thermostats have self-learning control?

Smart thermostats learn the temperature setting you love selecting. They then select your ideal temperature setting for you, thanks to the self-learning control they feature. An example of a multi-room smart thermostat with self-learning control is the Nest learning thermostat.

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Wrap Up

You can save up to 23% of your monthly energy bills if you’ve invested in the best multi-room smart thermostat. That’s because they work with room sensors to stop regulating the temperature of unoccupied rooms. These smart thermostats are also easy to install and take less than 30 minutes to set up.

Controlling them is also a complete breeze since they work with voice assistants such as Alexa, Google Assistant, and Apple HomeKit, among other voice controls. You could command your voice assistant to select the temperature setting you love and wait for your smart thermostat to obey your command. It’s incredible how you could customize your comfort with the best multi-room smart thermostat.

We’ve presented you with incredible smart thermostats for your residential zones. They could improve your residential space comfort while also saving you money. As such, check them all out and see if they’re your preferred multi-room smart thermostats.

You could also use the buyer’s guide to find a smart thermostat that works best for you. You deserve to be comfortable in your home just as you deserve it anywhere else. So, invest in the best multi-room smart thermostat to give your home the comfort you desire.

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