The Best Thermostat in 2021 {Smart, Wifi & Programmable Picks}

Are you looking for the best thermostat? You are at the right place; here we are to guide you with the best 10 picks.

Ecobee SmartThermostat with Voice Control is our top pick. It got the first rank on our list.

Arctic Silver 5 Thermal Paste
#1 Rated Thermostat
(ThermoGears’s Best Pick)

The thermostat offers both heating and cooling to your home. If you’re home or away, it automatically changes the temperature.

You can control and configure the thermostat by using your mobile app.

It can monitor the temperature and humidity of the inside and outside of your home.

It automatically changes the settings that depend upon your coming and going.

According to the energy star, you can save up to $50 per year of your cooling and heating bills by using the thermostat.

It not only allows you to set more advanced schedules for every day of the week but also provides complete control using your HVAC system even if you’re out of the home.

After 36 hours of research and testing, we’ve made this list of 10 best thermostats that are available in today’s market as per the customer review, design, quality, price, features we provide this list.

Table could not be displayed.


Significance of Thermostat

Thermostat provides many features to keep your home cool and warm at low costs.

The fundamental models are comparatively low-price but they contain Wi-Fi connectivity that helps you to connect this device with your home internet.

You can control this device from your smartphone or tablet using the apps and some models allow you to control from the web browser.

The basic controls are lets you to increase or decrease the temperature, create a schedule for heating and cooling, you can modify that schedule if anybody returns the home earlier and switch it on or off.

Nest thermostat will track your regular arrivals and goings and also the heating across time.

If you are at home or outside then it creates the cooling and warming schedule based on as you prefer while at the previous time.

Best Thermostat

The costly thermostats provide more features than the basic models. It makes simple to construct and program the touch style device and it can be readable from anywhere in the room.

These thermostats display the current time, menu settings, and temperature until you touch the screen.

Nowadays, most of the smart thermostats include moisture sensors that will give warnings if it identifies high or low moisture levels. Some models will show the local climate prediction.

Ecobee4 has a wireless room sensor that evaluates how much heat in the room and they located to ensure that the room is heated or cooled to the home temperature setting.

If you want the thermostat that will reduce the temperature automatically when you leave from your home and restart when you arrive house, geofencing technology is in some of the models.

The geofencing technology uses the location of your mobile to know when you are come and leave from home.

You have to keep your mobile with you when you are leaving home for changing the climate.

10 Best Thermostats of 2021

Ecobee ThermostatEcobee SmartThermostat with Voice Control[ 5 ]
Nest ThermostatNest AMZE2NESTHERMOSTE Thermostat[ 4.9 ]
Emerson Sensi Thermostat 1Emerson Sensi Wi-Fi Smart Thermostat[ 4.8 ]
Nest T3008US Learning 3rd Generation ThermostatNest T3008US Learning Thermostat[ 4.7 ]
Mysa ThermostatMysa Smart Thermostat[ 4.6 ]
Honeywell ThermostatHoneywell RCHT8610WF2006 Thermostat[ 4.6 ]
Bosch ThermostatBosch BCC100 Thermostat[ 4.5 ]
Honeywell Digital ThermostatHoneywell TH3110D1008 Thermostat[ 4.4 ]
LuxPro thermostatLuxPro GEO-BL Thermostat[ 4.3 ]
Ecobee 4 thermostatEcobee4 Smart Thermostat[ 4.2 ]

Best Thermostat 2021 – Comparison

Ecobee SmartMulti-stageYesYes
Nest E2 stageYesYes
Emerson SensiMulti-stageYesYes
Nest 3rd GenerationMulti-stageNoYes
Mysa Smart2 stageNoYes
Honeywell RCHT8610WF20062 stageYesYes
Honeywell Digital2 stageNoNo
LuxPro GEO-BL2 stageNoYes

Best Thermostat of 2021 – 10 Thermostats Reviewed

1. Ecobee Smart thermostat with Voice Control – Best Overall

Arctic Silver 5 Thermal Paste

Main Features

  • Alexa voice technology
  • Durable crisp glass finishing
  • Dual-band WiFi connection
  • Constructed with the mobile app and Alexa
  • 5 GHz quad-core processor

Why Do We Recommend It?

The top product of our list of the best thermostat is the Ecobee smart thermostat with Voice Control, which is the 5th generation model.

It is the Ecobee’s latest version which is available in today’s market. The price of this thermostat is a bit expensive, but it offers a lot of features for its price.

Make your Smart thermostat even Smarter.



Sensors are capable of detecting tenancy so that the device can monitor your entire surroundings and offers better comfort in rooms.


more savings

It’s possible to adjust your ecobee automatically to the right mode just for savings when it senses you’re not in a home.



You can get room temperatures and tenancy readings with the help of the ecobee mobile app on your iOS or Android device.

Ecobee thermostat automatically controls your room temperature. It senses the room temperature and delivers the correct temperature to the room.

It comes with a 3.5 inch, 480 by the 320-pixel color touch display, and two digital microphones located on the side of the screen.

It offers clear audio capacity and echo cancellation when compared to the analog microphones. It offers a lot of features when compared to the Ecobee 4 thermostat.


Causes to Purchase

  • Simple to Install
  • Remote Sensor
  • Alexa Technology

Causes to Evade

  • Increases the electricity bills

Ecobee is also the best thermostat with a remote sensor that senses and provides better room temperature.

The notable feature of this thermostat is Bluetooth compatible. 

This thermostat has a single remote room SmartSensor which is used to keep even temperature to your home.

And this sensor provides extended range and long battery life when compared to the Ecobee 4 thermostats.

The package includes 1.5GHz quad-core CPU, 4GB of flash memory, and 512MB of DDR4 RAM.

This thermostat works well with Apple’s HomeKit platform, supports Google Assistant and Siri voice commands.

It helps to reduce your heating or cooling bill by up to 23 percent.

This thermostat constructed with an Alexa and mobile app so you can easily control the device via your phone, tablet, apple watch, etc.

2. Nest AMZE2NESTHERMOSTE Thermostat – Best Value Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • Puck shaped design
  • Home mode and away mode
  • Auto schedule function
  • Uses machine learning algorithms
  • White LCD screen

Why Do We Recommend It?

The second best product on our list is Nest AMZE2NESTHERMOSTE Thermostat, which is available on the market. It is one of the best thermostats at under $200. It helps to keep your room comfortable.

This wifi programmable nest thermostat works well with Alexa and Google Assistant. The notable feature of this thermostat is it works automatically.

It will automatically shut off when you’re leaving the house and increase the temperature while you enter the house. You can also change the temperature by using your mobile phone.

By using the nest app, you can easily monitor the energy usage of the thermostat. It is also the best wifi thermostat with excellent features.

Causes to Purchase

  • Simple installation process
  • Reduces heating and cooling bills
  • Easy to monitor the temperature

Causes to Evade

  • Doesn’t support with HVAC systems

It includes temperature, humidity, motion, light sensors, and rechargeable lithium battery.

It is Bluetooth compatible and supports 2.4 GHz and 5GHz wifi.

It also works well with single-stage heating and cooling and doesn’t work with multi-stage heating and cooling components.

There are different types of heating type is available (oil, gas, propane, electric) you can choose it as per your preference.

Another notable feature of this thermostat is its home mode and away mode, which helps to save your heating and cooling bills.

It automatically enters into the Eco mod while you’re leaving from your home and return to the home mode while you come to the home.

3. Emerson Sensi Wi-Fi Smart Thermostat – Best Wi-Fi Thermostat

Emerson Sensi Thermostat 1

Main Features

  • Supported with Amazon Alexa, Google assistant, apple home kit and wink smart home platforms.
  • Heat pump comes with 4 stages of heating and 2 stages of cooling
  • Remote and multi-thermostat control
  • Install less than 30 minutes
  • Weight: 0.16 ounces
  • The smart alert helps to prevent the thermostat from overheating.

Why Do We Recommend It?

Emerson Sensi thermostat is one of the best wifi thermostats on our list that offers more exact temperature to your room.

This thermostat integrated with Amazon Alexa, Apple home kit, Google Assistant, and, Wink smart home platform.

And it works well with HAVC systems in most homes. If you are searching for the best thermostat at an affordable price, then this Emerson Sensi Wi-Fi Smart Thermostat is the right choice for you.

It is one of the best reasonable price thermostats.

You can easily control the temperature and schedule the thermostat by using the remote.

You can also connect the thermostat to your home wifi network and control the thermostat through the Sensi app.

If you are using the c-wire for your installation, then you can easily control the thermostat by Siri.

Most of the thermostat requires c-wire to provide enough power.  This wifi thermostat works with or without a C-wire.

Causes to Purchase

  • Offers accurate temperature
  • Easily controlled by app or remote
  • Different types of temperature settings

Causes to Evade

  • Need good wifi connection always

The notable feature of this thermostat is energy star certified, which helps to save your HVAC energy cost up to 23 percent.

Its geofencing, 7-day flexibility scheduling, remote access, and energy usage reports all are making this thermostat as best.

It only takes less than 30 minutes to the installation process.

It comes with a remote control so you can control the thermostat while you’re sitting on the couch or bed.

And you can also control the thermostat by using the Sensi app. It alerts you while the temperature level or humidity level increases.

4. Nest T3008US Learning 3rd Generation Thermostat – Best Design Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • Works well with Amazon Alexa, Google Home, Logitech, IFTTT, Samsung smart things, WeMo, Wink, and Xfinity.
  • Logitech Harmony remote
  • Retro style circular design
  • Radiant system and airwave mode

Why Do We Recommend It?

Are you searching for the bolder look thermostat with more features? Then I am sure you must like this Nest T3008US Learning 3rd Generation Thermostat.

Its striking design and the unmatched smarts make this thermostat as best.

It automatically set the temperature when someone enters the home so you can get a comfy feel into your home.

It comes with 480*480 resolutions and 299 PPI large displays so you can easily read the values.

It has smart home integration, which is used to manage the home’s cooling and, heating. This Nest 3rd generation is the best thermostat for a heat pump.

It also comes with a safety alert that helps to alert you when your house gets severely hot or cold.

So you don’t have to worry about safety issues. It is built with a rechargeable lithium battery and comes with a 1 pound amount of weight.

Causes to Purchase

  • Large and sharp display
  • Extraordinary automatic schedule
  • Comfortable and convenient temperature

Causes to Evade

  • Doesn’t support with Apple Home kit

The installation process of this thermostat is so simple you can easily install it by yourself.

Once you connected the thermostat with the wifi, you can control the thermostat by using your smartphone.

The notable feature is this thermostat programmed with an auto-scheduling algorithm that helps to save your money.

So you no need to fine-tune the thermostat frequently.

Another important feature of this thermostat is its true radiant system which is used to control the boiler and radiator system.

If your home’s humidity level is low, then the nest thermostat automatically activates the Airwave.

And this Airwave deactivates when the evaporate coil is cold.

5. Mysa Smart Thermostat – Best Voltage Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • Smart lighting control
  • Support geofencing, Apple Home kit, IFTTT
  • Doesn’t require any extra hubs
  • Samsung smart thing compatible

Why Do We Recommend It?

Mysa is one of the best thermostats which are specially designed for high voltage heaters such as, baseboard, fan-forced convertor. This one gives enough temperature for your whole room.

The important aspect of this Mysa smart thermostat is its clear white design, dot matrix display, and sensitive buttons.

It is a wonderful device which offers high tech vibe without any disturbance. At the same time, it also has one drawback.

This thermostat doesn’t provide much information like other thermostats on our list.

It only shows the day and time, current outside temperature, current inside temperature, and programmed temperature.

Causes to Purchase

  • Elegant design
  • Built in wifi adapter
  • Easy to handle mobile app

Causes to Evade

  • Little hard to install

Most of the thermostat has internal components like display, a radio that needs continuous electrical power.

Some of the thermostats can have enough power electricity for running the components but this Mysa thermostat powered by the direct line wire, then the second wire connects to the load wire, the third wire connects to the neutral wire, and the last wire is used for ground.   

The installation process is a little difficult for you. After installation, you can control the thermostat via the Mysa app.

By using this app, you can change the temperature, adding the schedule, delete the temperature settings.

You can also connect the thermostat with Amazon Alexa, the Google assistant. And this thermostat is geofencing, Apple HomeKit, and IFTTT compatible.

Its elegant design, convenient app, and robust smart home combination all are making this thermostat as the best value.

It easily connects to your home wifi network, and it doesn’t need any extra hub.

This thermostat also supports Samsung Smartthings, which is used to create advanced actions with the smart hub.

6. Honeywell RCHT8610WF2006 Thermostat – Best Thermostat for beginners

Arctic Silver 5 Thermal Paste

Main Features

  • Works well with the most HVAC system
  •  Lyric smartphone app
  • Compatible with all smart home platforms
  • Universal mounting black plate
  • 7-day scheduling and geofencing function

Why Do We Recommend It?

Are you looking for the thermostat at an affordable price? Then this Honeywell RCHT8610WF2006 Lyric T5 Wi-Fi Smart 7 Day Programmable Touchscreen Thermostat is the right choice for you.

It is one of the best least price wifi thermostats, which is available in today’s market.

It works well with Amazon Alexa and Apple Homekit and also it supports geofencing.

If you have a C wire, then the Honeywell thermostat installation is so simple.

It can be controlled programmed via smartphone, and it allows you to adjust the thermostat settings.

This Honeywell model is the best thermostat for hot water radiators.

You can create the 7-day schedule or select enable location-based temperature control that utilizes the geo-fencing function.

This geofencing function used to adjust the temperature that depends on your smartphone location.

This thermostat automatically changes from heating to cooling and offers enough comfort in your home.

Causes to Purchase

  • Solid performance
  • Gives alert notifications
  • Auto home and away setting

Causes to Evade

  • Fairly complicated to install

This good looking large size thermostat comes with a sleek black box, and it has a black screen with white font, it resembles a digital alarm clock.

It supports with 24-volt conventional forced air, heat pump, hot water. It doesn’t support with humidifiers and dehumidifiers.

It also supports two stages of heating and cooling that means it works well with most HVAC systems.

It requires C wire for its installation, and also the process is so simple. You can set any temperature such as home, away, sleep, and wake up as per your preference.

You can also use the Lyric smartphone app to control the thermostat. Based on your location, time, and day, this thermostat automatically sets the temperature.

7. Bosch BCC100 Wi-Fi Thermostat – Best Control Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • Unique unobtrusive design
  • Chicklet style controls
  •  Modern slim touch screen
  • Convenient mobile ( ios and android) app
  • User-defined schedule
  • Supports Amazon Alexa

Why Do We Recommend It?

Bosch BCC 100 is a serviceable thermostat that can control from anywhere. This thermostat works well with most of the home humidifiers and dehumidifiers.

It comes with a simple, attractive, and unobtrusive design, and its simple white text gives an accurate view. Then its chicklet style controls create an additional look to the thermostat.

It has a 5-inch color touch screen that offers bright, sharp, and clear reports and supports with most 24 V HVAC systems such as gas, oil.

Then the electric system works well with the two heating and two cooling stages, and the heating pumps work with four heating and cooling stages.

Causes to Purchase

  • Easy to read display
  • Provide message alerts
  • Supports with multiple HVAC system

Causes to Evade

  • Mobile doesn’t support with geofencing

You can be programmed or controlled this thermostat by using the touch display or free mobile app, that provides you access from anywhere.

The mobile app’s central screen shows the large dial with the current room, target temperature, current mode, and current schedule.

By using the schedule screen, you can create daily, weekly heating, and cooling schedules.

Then its temperature screen used to set the cold and hot temperature, and it automatically sends an alert message to your phone when the thermostat is overheated or cool.

The one issue that we’ve found in this thermostat is it is not that much quite when compared to the other competitor.

By connecting the thermostat to your home wifi, you can control and configure the settings of the thermostat through your mobile app.

8. Honeywell TH3110D1008 Digital Thermostat – Best Non-Programmable Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • Backlit display

  • Backlit display
  • Two slide switches
  • Precise comfort control
  • Pro 3000 1 heat and1 cool
  • Heat temperature range starts from 4.5 degrees to 32 degrees C
  • Cool temperature range starts from 10 degrees to 37 degrees C
  • Relative humidity starts from 5 percent to 30 percent

Why Do We Recommend It?

If you would like to buy a nonprogrammable thermostat, then the Honeywell TH3110D1008 Pro Non-Programmable Digital Thermostat is the right choice for you.

The price of this thermostat is very affordable when compared to the other competitor on our list. It perfectly suits your budget.

It includes a digital screen, slide switches which are very simple to handle. It offers many features and gives a more convenient temperature control setting when compared to the mechanical thermostat.

This thermostat comes with a backlit display, which is very easy to read even low light conditions.

You can also see the current temperature through the digital display.

It has two side switches which are located on its front. One is used to select hot, cold, or off the thermostat, and another one is used to turn the fan on and off.


  • Affordable price
  • Easy to read clear display
  • Comfortable switch control


  • Doesn’t work with air conditioner

9. LuxPro GEO-BL Wi-Fi Connected Thermostat – Best Smart Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • An extraordinary user interface which offers a wealth of information
  • Works well with Apple Homekit ecosystem and Amazon echo
  • 10 terminal base plate
  • Energy star recommended a thermostat
  • Unique convertible design
  • Modern touch screen aspect

Why Do We Recommend It?

LuxPro GEO-BL is one of the best smart thermostats, it works well with geofencing function.

It is powered by 2 AA batteries. The important aspect of this thermostat is its interface.

It offers a lot of information about HVAC systems. Its timeline keeps following the HVAC activity.

It is available in black or white finishing so you can choose it as per your choice.

As usual, you can connect the thermostat with your home wifi and, it is very effective to control the heating and cooling schedule.

It also supports with Apple Homekit ecosystem and Amazon echo. And it doesn’t support with IFTTT, Google Home, or smart vents.

By using the home and away mode, you can change the settings.

It has a curve on its right side, which contains the setting dial.

This dial length is 2.2 inches and, it has a band of silver trim surrounded its perimeter.

It has a 2 by 2 inch LCD panel which is located on the left side of the device.

It shows the target and current room temperature, heating mode, wifi update, date, time, and, also displays the menu items. You select the menu items to program the thermostat.

Causes to Purchase

  • Battery power backup
  • Fix either horizontally or vertically
  • Create different schedule for 7 days

Causes to Evade

  • Doesn’t work with humidifier and dehumidifiers

Its baseplate comes with 10 terminals that are used for wiring conventional and heat pump HVAC systems. 

This thermostat is compatible with the two-stage heating and one-stage cooling and also works with gas, oil, and electric heating systems.

Then the common terminal includes blower fan, air conditioning, damper, heating and cooling energy, and 2 stages of heating and cooling terminal connections.

The main issue that we’ve found in this thermostat is doesn’t support dehumidifiers, humidifiers, and ventilation devices.

The dial display provides the Heat, Cool, Off, Auto modes, and Run, Hold, Set Heat, Set Cool schedules.

So you can schedule the heating and cooling modes for 7 days. You can also make a different schedule for the week.  

As usual, you can configure or control the geo from anywhere by using the mobile app.

10. Ecobee4 Smart Thermostat with Built-In Alexa – Best Programmable Thermostat

Arctic Silver 5 Thermal Paste

Main Features

  • Comes with a remote sensor
  •  The excellent touch screen interface
  • Clear backlit display
  •  Latest and smartest thermostat function
  • Constructed with Alexa voice control and far-field voice control
  •  Supports heat recovery ventilation and energy recovery ventilation

Causes to Purchase

  • Heavy duty thermostat
  • Provide excellent weather report
  • Doesn’t require C wire for installation

Causes to Evade

  • Alexa integration is unnecessary

Ecobee4 is the best thermostat with humidity control hence it senses the humidity level and alerts you when it increases or decreases.

Another important feature of this thermostat is it doesn’t require C wire for installation. It comes with a wiring adapter which adds some complication to install.

By using the ios and android app, you can easily install this thermostat and also change the settings.

It comes with only one sensor, but you can also buy an additional one that is based on your dependency.

Most of the ordinary thermostat only read the one-room temperature but this thermostat can able to read all the rooms temperature, and given the perfect temperature to the room hence this is the best thermostat with zone control.

You can also use the Apple HomeKit, Samsung SmartThings, IFTTT, and other platforms.

It built with Alexa voice controls, far-field voice technology, and also has a backlit display which offers a clear view of the temperatures.

This thermostat automatically controls the temperature of your room. This thermostat uses the latest and smartest thermostat technology.

It offers three time zones to you that are home, sleep, and away. You can use these modes depends on your preference. You can also create the schedule for the week by these modes. 

Did You Know?

During the winter you can set the temperature based on your needs hence you have to know the best thermostat setting for winter. We’ve preferred two temperature settings based on the situations. If you are at home in the daytime, you have to set 72 F. If you are away from home or you are sleeping at night, 66 F to 62 F is best for you.

Types of Thermostat

Generally, the thermostat can be classified into two types that are Line voltage thermostat and low voltage units.

Line Voltage Thermostat

These thermostats are directly powered by a 120-volt or 240-volt circuit. This type of thermostat can compatible with the single heating system such as radiant systems, baseboards, or convection.

If you have a line voltage thermostat, then you must check the wires. These types of wires will be thick 12 gauge or 14 gauge wires.

These wires come with red and black or black and white combinations. In these types of the thermostat, the current flows via a thermostat then into the heater.

Best Line voltage Thermostat

Low Voltage Thermostat

Low Voltage

These types of thermostats used with systems such as a central furnace or heat pump or a boiler.

If you are using a low voltage system in your home, then you should use a low voltage thermostat to control your heating system.

These types of thermostats consume less energy when compared to the line voltage thermostat.

It can able to run at 24 volts and control the temperature in every room. One notable thing of this thermostat is it only controls the blowers or fans.

The thermostat can be classified into five types based on their features. That is the smart thermostat, programmable thermostat, wifi thermostat, wireless thermostat, and mechanical thermostat.

Mechanical Thermostat

Mechanical thermostat is the basic and old version of thermostats which uses the bimetallic strip to find and adjust the temperature.

These are a very affordable model and an ideal choice for those who live in the apartments.

Then the installation process of this thermostat is very simple.

Best Mechanical Thermostat

Non-programmable Digital Thermostat

Non programmable

It is the next basic version of the thermostat.

This type of thermostat needs direct human intervention to adjust the temperature.

These types of models are inexpensive. The one issue of these types of thermostat doesn’t help to decrease your heating or cooling bills.

You can easily change the temperature of your home at any time. In this type of thermostat, you cannot pre-program the temperature.

The quality non-programmable thermostat can maintain your temperature.

It offers digital display which is very easy to view the setting and also accurately controls the HVAC system.

Once you set the temperature, the thermostat will remain at the same temperature until you change again the settings.

Programmable Thermostat

A programmable thermostat automatically adjusts the temperature based on your presetting.

It helps you to save your heating and cooling bills.

It is very comfortable to use and time-saving thermostat.

By using these types of a thermostat, you can pre-program the temperature.

Best Programmable Thermostat

Most of the programmable thermostat comes with daily and weekly settings.

This type of thermostat is an ideal choice for those who live in drastic climate change areas.

It allows you to change the temperature so you can feel warm at chill days and cool at hot days.

If you are worried to change the thermostat setting manually, then this programmable thermostat is an ideal choice for you.

You can set a different temperature schedule throughout the week.

Wireless Thermostat

Best Wi-Fi Thermostat

These types of thermostats allow you to adjust the temperature by using a remote control.

The price of these types of thermostats slightly high, but it offers more functionality.

It also helps you to reduce the heating and cooling bills.

If you have pets in your home, then this wireless thermostat is the best choice.

It is very safe for a handicapped person or old people. It is connected via a wireless network.

You can control this thermostat by your smartphone, tablet, or computer.

It is a programmable thermostat. So you can preset your temperature setting.

It is an ideal choice for those who want to control the whole home’s temperature even if they out of the home.

If you want to save more energy, then you can use this wireless thermostat for your home.

Choosing the best wifi thermostat can make you comfortable.

Smart Thermostat

The last types of the thermostat are smart thermostats.

It sens the movement of the room as per the sensing it automatically adjusts the temperature.

You can easily control this thermostat by using a remote control.

The notable feature of this thermostat is it can be controlled by using voice control.

Best Smart Thermostat

These types of thermostats are more expensive when compared to the above types.

As well as it saves your heating and cooling bills. Most of the smart thermostats are Google Assistant and Amazon Alexa.

It is an ideal choice for those who want optimal indoor comfort. It also alerts you for maintaining the HVAC systems.

Install a Thermostat

Installations can vary from thermostat to thermostat but all the devices require some basic steps for the installation.

You can install your thermostat by yourself using the instructions.

Installation of a thermostat is quite easy, but it is essential to remember that your system is wired before you start.

Regularly, you have to check the wiring before you change your old thermostat.

Many of the latest thermostats come with pre-defined designs hence you can connect them easily while installing it.

You have to know the type of your system before you install it. Usually, HVAC systems contain electric, forced air, oil, gas, and radiant.

If you have a complicated HVAC system, it is better to prefer a professional technician for the installation to avoid the damage.

One of the important factors is that you have to check whether your system has a C wire because that is the main wire which provides continuous power to the thermostat.

Most of the thermostats need a C wire to operate but the older devices don’t need this wire.

Some thermostats contain a power extender kit hence you can install yourself to supply the power.

Most of the thermostats have an app then you can create an account and configure that for connecting to the WiFi.

After that, you can operate it using your smartphones. Using this app, you can operate the thermostats easily and create the schedules.

Things to Consider Before You Going Purchasing the Thermostat

Geo-fencing Technology

Geo-fencing is an important thing to consider before you make a decision. It uses in the thermostat app, which helps to adjust the temperature through your mobile phones. It automatically shuts off when you’re not at home. It reduces your electricity bill.

Heat support

Most of the thermostat works well with the central HVAC systems. So check the thermostat is heater support or not. You should buy a thermostat which can work with any type of heater.

Remote Access

Most of the thermostat comes with remote control, so before you make a purchase checks the thermostat has the remote or not. You can easily control or adjust the temperature wherever in your home by using this remote control.

Smart Home Integration

Most of the smart thermostat attached to an app so you can easily control the thermostat via your mobile phone or tablet.

The best thermostats are integrated with smart home devices and smart home systems.

You can control this type of thermostat with a voice command via google home digital assistant or amazon echo.

You can also link this thermostat with your smoke detector, which helps to prevent firing.

And apple home kit, Smart vent connectivity, and, tie-ins with home security systems also available in the market.

Based on your dependency you can choose it.

And also check the system compatibility because of your home divided into many zones. And also you need heat and cool everywhere. You can use a single app to control multiple zones.

Testing of a Thermostat

Let’s talk about testing. Testing is one of the important factors in electrical appliances.

You have to know only some basic things for testing the system. In thermostat, first, you have to check whether the system is installed correctly and also clarify the current status of your thermostat.

Regularly, you have to check the battery condition, if your display is not brightening then the problem is in your battery.

If you want to know that your thermostat is working properly or not, you can do these things. You have to turn it from low temperature to high temperature and the other can be placed by the furnace.

 If any sound comes from the thermostat, it works properly the problem is in the furnace or if it is silent then the problem is in the thermostat.

You have to note down for remembering if you disconnect anything from a thermostat. After you disconnect, secures them safely to avoid the injuries.

Thermostat VS Thermistor

Thermostat and thermistor are the two tools used to read and report the temperature changes of the metal and its reactions.

There are different types of metals such as copper, tungsten, aluminum, etc. The changes can be measured in different ways using the metal and their properties.

thermostat vs thermistor


A thermostat is a simple device that is based on similar movements of the surrounding metals as they contact the electric connector.

Thermostat contains two metals they are tungsten and nickel, copper and aluminum, or some other combination of these metals.

Their similar movements produce the press against the electrical connector or from the electrical contact when the temperature changes.


A thermistor has the same principle as the thermostat but it is used differently.

It uses a metallic oxide compound manganese or cobalt and the principle of this is simple i.e the conductivity of the metallic oxide compound is based on the temperature.

Usually, the conductivity is increased based on the temperature depending on the metallic oxide compound used and the amount of electricity passing through the compound can be changed according to the temperature.

Thermostat Vs Thermocouple


The thermostat is a device used to measure the temperature and compares it with the required temperature.

It acts as a switch to on or off at a particular temperature. For example, if you feel that your home heating system is hot enough and it no need more heat, then the thermostat turns them into cool.

The thermostat allows the coolant flow when the system gets a particular temperature.

Thermostat vs thermocouple


The thermocouple is a device that measures the temperature and it generates the electrical charge when it heated.

Thermocouples are used in houses and offices to control the temperature in the heating systems.

It is usually used in the boiler to know whether the pilot light is on or hot hence this is very safe to allow the gas to the main burner to heat the water.

Thermostat Vs Thermometer


Thermostat directs the temperature and it helps to control the temperature of the room based on your wish.

If your room gets overheated then the thermostat will change the temperature and turns into cool.

Thermostat Vs Thermometer


The thermometer is used to read the temperature of the room. If your room gets hot, thermometer tells you that the room is hot.

Research and Buying Tips 

 Do I have to have special wiring to install a smart thermostat?

For this hypothetical question, my answer would be yes and no because in recent days most of the thermostats need a C-wire which offers a continuous flow of 24 VAC power to the thermostat.

Few older thermostats do not require C-wire but others like Ecobee smart thermostat comes with an adapter for homes that don’t have C-wire.

⇒ Do I need room sensors?

It depends on your needs, room sensors basically measure the temperature of a single room and use it to heat or cool the entire home.

Room sensors are more specific which measures the room temperature and adjusts it based on the individual area.

In case if own a large home then it’s recommended to install a room sensor as it heat or cool your home better.

On the contrary, if you live in small rooms or a wide-open area, room sensors are not needed.

⇒ What is the best smart thermostat app?

This personally depends on how advanced you want your system to be, if you’re looking for the simple and clean app you can easily schedule the heating and cooling functions, from my point of view I’d suggest Honeywell Totalconnect app as a good choice.

If you need some extra features then it’s better to use the nest app.

Final Verdict

A smart thermostat provides a lot of features that help to keep your house comfortable and helps to reduce your heating and cooling bills.

Most of the basic thermostats are almost inexpensive, but it offers enough features to you such as wifi compatible, mobile app, etc.

We’ve reviewed the top picks which are available in today’s market. Each one is unique in that way, so you can choose it as per your preferences.

Check out our reviews and get a clear idea about the thermostat.


Kim Goodwin
About Kim Goodwin

Kim Goodwin holds a Master's in thermal engineering from the University of Rhode Island. At Thermo Gears, she reviews most equipment that uses thermal imaging technologies.