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Smart Thermostat Installation Cost

Smart Thermostat Installation Cost

National average
(installation of C wire and a medium-quality smart thermostat with voice control options, touch screen)
Low: $100

(smart thermostat with basic control features and installation costs with an existing C wire)

High: $500

(smart thermostat with 3 units of voice control systems, sensor control, Spotify and Bluetooth streaming options, C wire and unit installation)

Cost to install a smart thermostat varies greatly by region (and even by zip code).
Get free estimates from air-conditioning and heating contractors in your city.

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Smart Thermostat Installation Cost

National average
(installation of C wire and a medium-quality smart thermostat with voice control options, touch screen)
Low: $100

(smart thermostat with basic control features and installation costs with an existing C wire)

High: $500

(smart thermostat with 3 units of voice control systems, sensor control, Spotify and Bluetooth streaming options, C wire and unit installation)

Cost to install a smart thermostat varies greatly by region (and even by zip code).
Get free estimates from air-conditioning and heating contractors in your city.

The average cost of installing a smart thermostat is $300.

How Much Does It Cost to Install a Smart Thermostat?

Smart thermostats are a great way for homeowners to save money on their utility bills. They are designed to control the heating and cooling systems in a home and turn them off and on based on predetermined settings. This helps homeowners make the most out of their heating and cooling systems while also saving both money and energy by setting different temperatures for each day, depending on the activity going on in the house.

The average cost of installing a smart thermostat is between $250 and $350, with most homeowners spending around $300. On the lower end, smart thermostats with only basic features cost around $100, while those that give the homeowner better control over the indoor climate and come with multiple smart sensors and/or voice control can cost up to $500 with installation included.

Smart Thermostat Installation Cost

Smart Thermostat Cost
National average cost$300
Average range$250 - $350
Minimum cost$100
Maximum cost$500

What is a Smart Thermostat?

Traditional thermostats are designed to control the heating and cooling systems in a home or other building. Smart thermostats, on the other hand, come with a variety of features and additions that allow homeowners to have more control over the temperature in a property and set the times when the heating or cooling turns on and off. Like all thermostats, of course, smart ones can also be turned on and off manually.

A lot of newer thermostats now even have sensors installed that track when the homeowner is home or which can be set to turn on or off when a smartphone is within a set perimeter. There are also some smart thermostats that are designed to control humidifiers, dehumidifiers, fans, and other systems in a home, giving homeowners better control over the atmosphere and temperature.

Each smart thermostat is connected to and operated from an app on your smartphone. Most can be hooked up to home automation systems, such as Google Nest or Apple Homekit. Some companies offer support directly from the company, but most units are designed to be operated by the homeowner directly.

Smart Thermostat Cost by Brand

The thermostat market is becoming more and more competitive, with hundreds of thermostat devices being sold daily. Some are designed for small apartments and others for large office buildings, and each comes at a very different cost depending on the voltage and features. Although smart thermostats have entered the market relatively recently, some brands have distinguished themselves by the quality they offer:

Smart Thermostat Cost Chart

Smart Thermostat Cost Chart


Honeywell Thermostat Cost

If you need a smart thermostat that comes with a plethora of features at an affordable cost, Honeywell thermostats come with everything you may need at a price fit for your budget. While it requires a C wire to be installed additionally, it does an exceptional job for the $68 - $200 price range that it comes in.

OUR TOP PICK: Honeywell Home T5 Smart Thermostat

Honeywell Lyric T5 costs around $140, which, considering the features it comes with, is well worth the price.

Emerson Thermostat Price

Emerson offers a relatively limited number of smart thermostats, with only a few models currently selling under this brand. While they do require a C wire installed, Emerson’s models are more affordable than other thermostat brands on the market, with the typical price ranging between $80 and $137 for the thermostat alone. However, you can also purchase some models with an additional Alexa voice control option, which raises the cost to around $177 for the bundle.

OUR TOP PICK: Emerson Sensi Touch Wi-Fi Smart Thermostat ST75

One of its best models is the Emerson Sensi Touch, which comes with an easy-to-use touchpad and is compatible with Alexa, Google Assistant, and Siri so you can adjust the temperature with simple voice commands. Its current cost is around $125.

Lux Smart Thermostat

Lux’s smart thermostats are on the more affordable side of the spectrum, coming in at a cost of $99 to $153, which is quite a bit more affordable than some other brands.

OUR TOP PICK: Lux Products GEO-WH Wi-Fi Thermostat

To give users more control, Lux has developed a convenient LUX app that is compatible with both iOS and Android devices. The most cost-efficient model in their product range is the GEO-WH model. It comes at a price of around $100 on Amazon, and is powered by a battery, C wire, micro-USB or a Lux Power Bridge, works with both Alexa and Google Assistant and is energy star certified.

Nest Thermostat Cost

Nest smart thermostats are the go-to thermostats for those that want to balance affordability and appearance. They currently have several types starting at a cost of around $109 for the simpler model, while the other, more modern-looking one that costs about $229.

OUR TOP PICK: Google Nest Thermostat E

The Nest Thermostat E with a price tag of $109 has all of the basic features most units have.

Ecobee Thermostat Price

Although the cost of the Ecobee thermostat and its installation may come in higher than some others, it’s one of the best smart thermostats currently selling on the market. While most units are designed to measure the temperature in one spot, Ecobee allows you to install sensors in multiple rooms and control the temperature in each of them. They cost $138 to $249 for the unit, depending on the model you choose, or you could spend $280 for a smart thermostat bundle that comes with 3 smart sensors.

OUR TOP PICK: Ecobee SmartThermostat with Voice Control

Ecobee Smart Thermostat with voice control comes with features like built-in Alexa, Spotify, and Bluetooth streaming, hands-free calling, and more for a cost of around $250 for the thermostat and one voice control sensor, or $280 for the Ecobee bundle that comes with two additional voice control smart sensors.

Mysa Smart Thermostat

As a smart thermostat brand, Mysa is focused on combining affordability and compatibility, which is why their thermostats cost $139 to $249 and come with different unique features and additions.

OUR TOP PICK: Mysa - Smart Thermostat for Electric Motherboard Heaters

The Mysa for Electric Baseboard Heaters comes at a cost of $139. It’s compatible with both electric baseboards and electric fan-forced heaters so it doesn’t require much adjusting to use it and also has an elegant design, allowing homeowners to place it anywhere in their home and having it blend with the interior.

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Cost to Install Smart Thermostat

Installing a smart thermostat starts with connecting the wires to their respective ports and affixing the mounting plate to the wall. While this can be a DIY job, electricians and handymen have the knowledge and experience to do this job the safest way, so it’s recommended you hire one for the job. Most electricians charge a flat rate of $85 for small jobs, or between $40 and $100 if you agree on an hourly rate. Handymen also charge around $100 for small jobs, or a $60 - $90 hourly rate.

Smart Thermostat Replacement Cost

If you’re replacing an existing smart thermostat and your walls already have wires available for installing, the process will be pretty simple and quick. An electrician will just disconnect the old model from the mounting plate and connect the existing wires to the mounting plate of the new unit. As replacing an existing thermostat is a relatively simple job, it would cost around $85 for an electrician to replace it with a new one.

However, if you’re replacing an older model and an additional C wire installation is required, the installation will take longer and cost more. As the time extends, the installation cost would jump to $100, so the C wire installation would add an additional $70 to $100 to the total cost, depending on the type of thermostat you’re replacing.

Smart thermostat installed on the entry of a home next to wooden stairs

What is C Wire for Thermostat?

A C wire is what powers the thermostat by providing a continuous return path for the 24V power in and out of the smart thermostat. Most smart units are operated through a touch screen that requires constant power input to show the temperature and air atmosphere, so a C wire is frequently required for this type of thermostat to operate. If there is no C wire, an electrician will need to run one so that the thermostat can be installed and operated properly.

Smart Thermostat Compatibility

Not all smart thermostats are the same voltage. Some are designed to control only central heating and cooling systems, while you will need to look more carefully if you need one for certain systems, including baseboard and blower-type heating. The first type handles less voltage, while the latter requires more power. If you try to use your chosen smart unit to operate more than it’s built for it will burn out. Be sure to choose one that can handle the right amount of electricity so the unit functions properly.

Smart Thermostat for High Voltage

Most smart thermostats are compatible with the most common home heating systems. Every home’s system has either high or low voltage, however, so you will need to be sure to purchase a smart unit that works for your heating system. The majority of homes in North America have low voltage systems that run on 24V circuits, but 1 in 10 homes in the US still have high voltage systems, so installing a smart device in those homes will require additional attention and electrical adjustments.

Smart Thermostat vs Programmable Thermostat

Although people often think they are the same, smart thermostats and programmable thermostats are different from one another. The main difference between the two is that programmable thermostats allow you to set a preferred temperature for a set time of the day while smart ones can memorize your preferences over time and apply them automatically. They basically serve the same purpose, but smart devices take it a step further with providing touch screen options and automatic temperature settings.

The additional features smart thermostats come with show in the cost as well. While programmable thermostats can be found for as low as $20, the cost for smart ones can run as high as $250 depending on the model and features.

Smart Thermostat vs Programmable Thermostat

Programmable thermostat$20-$170
Smart thermostat$75-$250

Smart Thermostat Pros and Cons

Smart thermostats are the ideal units to use to create the perfect air atmosphere in your home. You can control the temperature, humidity, and air quality in your home remotely, all while saving on utility bills. While many think that advanced technical knowledge is needed to operate this type of device, most have a pretty straightforward system that is simple to use and learn. You can program it to show and compile data daily, weekly, monthly, and yearly about the energy spending, temperature, air quality, and humidity in your home.

On the downside, smart thermostats are tricky to set if multiple people live in the home. Most will change the temperature up and down during the day, which will prevent the system from memorizing the correct temperature and automatically setting it in the future. Moreover, they often require professional installation and compatibility with the existing heating and cooling units, which can come at an additional cost for homeowners.

Before you purchase this type of thermostat for your home, make sure you weigh all of the pros and cons that come with having one.

Enhancement and Improvement Costs

Smart Thermostat Wiring

Whether you’re installing a new thermostat or replacing an existing one, there may be a need for new wiring, especially if the model you’re installing is a newer one. As we mentioned above, installing new wiring for a smart thermostat is done by a professional electrician. Electricians charge a flat rate of between $40 and $100 depending on the complexity of the job, or an hourly rate of $60 - $90 depending on the level of training of the electrician.

Additional Remote

If you want to have more control over the settings of the smart thermostat in your home, you can always purchase an additional remote. It will allow you to adjust the temperature and humidity in your home from another area. A programmable or a WiFi remote for a smart device costs around $38 per unit, while voice activated remotes and sensors cost around $100 for a three pack.

Wall damage repair cost

If you’re replacing an old smart thermostat with a new one, the old unit should first be removed so the new one can be installed. However, not all thermostats are the same size, so the hole in the wall may be bigger or smaller than the unit to be mounted. Because of this, the hole would need to be adjusted, which is typically done by a handyman at a cost of $60 to $90 per hour.

Additional Considerations and Costs

  • Many smart thermostats can be set to send email alerts to your phone in the event of the house temperature rising or falling out of your preset zone. You may also be notified of a system failure, power outage to the system, or if the humidity level is outside your preset range.
  • Always install your thermostat on an inside wall, away from heat or cold sources that may distort temperature readings.
  • Replace the thermostat during a time when the HVAC system is not in use or needed in case you run into issues.
  • Landlords may benefit from smart thermostats if utilities are included in the rental because they allow you to set and access the temperature remotely.
  • Not all HVAC contractors are familiar with smart thermostats and how they function. Always speak to your contractor ahead of time to make sure they can assist you.


  • How much does it cost to install a smart thermostat?

Most smart thermostats cost around $300 to install, which includes the cost of the unit and installation labor.

  • Can one thermostat control two units?

Some smart thermostat models are designed to control multiple units in a home. Make sure to check the compatibility of the model you’ve chosen and consult the manufacturer or an electrician if needed.

  • What is C wire on the thermostat?

The C wire is what provides a path for the continuous 24V power to the smart thermostat. If there is no C wire, the appropriate amount of power won’t be able to enter the unit, so it won’t operate properly.

  • When to replace the home thermostat?

Smart thermostats don’t have a preset lifespan or a recommended time when you should replace one, but the typical time is around a decade. It’s when they start showing signs of aging due to dust accumulation, damaged wires, or an outdated operating system.

  • Do smart thermostats really save money?

Yes. Smart thermostats are designed to turn on and off at preset times, or when another device is nearby, so there is no unnecessary power spending for heating and cooling when the homeowner is not present.

  • Do smart thermostats work without WiFi?

Yes, a smart thermostat can operate without a WiFi connection, but its functionality will be limited to basic cooling and heating control.

  • Where should a thermostat be placed in a home?

The smart thermostat should be placed in the area where you and your family spend the most time and most need the temperature to be ideal. However, make sure you don’t place it in a small place like a hallway as it will register the temperature only in that small space; nor next to a fireplace or AC unit as the temperature will be affected by those units. Ideally, a it should be installed in a wide open space.

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Cost to install a smart thermostat varies greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.

Smart thermostat on a beige wall

Labor cost by city and zip code

Compared to national average
Albuquerque, NM
Anchorage, AK
Ashland, NH
Ashland, OH
Athens, GA
Atlanta, GA
Austin, TX
Avenel, NJ
Baltimore, MD
Barrington, IL
Bethesda, MD
Brooklyn, NY
Chicago, IL
Coldwater, MI
Colonia, NJ
Colorado Springs, CO
Columbia, SC
Dallas, TX
Dayton, OH
Denver, CO
Essex, MD
Fort Lauderdale, FL
Fullerton, CA
Hartford, CT
Hilliard, OH
Hollywood, FL
Houston, TX
Huntington Beach, CA
Huntsville, AL
Indianapolis, IN
Irvine, CA
Jacksonville, FL
Kansas City, MO
Kemah, TX
Lake Elmo, MN
Las Vegas, NV
Laurel, MT
Long Beach, CA
Los Angeles, CA
Macungie, PA
Mantua, NJ
Miami, FL
Milwaukee, WI
New York, NY
Omaha, NE
Orlando, FL
Pensacola, FL
Philadelphia, PA
Phoenix, AZ
Reno, NV
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