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Smart Thermostat Installation Cost

Smart Thermostat Installation Cost

National average
( installation of amedium quality smart thermostat with existing C wire)
Low: $200

(budget model with straightforward installation)

High: $500

(luxury model, no existing C wire in 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.

In this guide

What Is a Smart Thermostat
HVAC Compatibility
Additional Considerations and Costs

How Much Does It Cost to Install a Smart Thermostat?

Smart thermostats are an innovative and easy way to help save money on your energy bills. Thermostats control your heating and cooling systems, turning them on and off. Smart models take this a step further, offering greater control and potential energy savings.

The average smart thermostat installation costs around $300 installed. Prices vary depending on the model you choose, the features you opt for, and what kind of wiring your existing thermostat has.

What Is a Smart Thermostat

All thermostats control the heating and cooling systems in a home or building. A smart thermostat does this but with additional features and added control. Like all thermostats, it can be manually turned on and off. It can also be programmed to turn on and off at preset times. From there, however, it differs from other thermostats in the level of additional control.

Smart thermostats operate in one of three ways to learn your habits and to program themselves to offer better control. Some work through sensors, which can tell when you are home or not. Others sense when your phone is a set distance away from the house, turning off when you exit that range and turning back on when you reenter it. Others allow you to turn off the system remotely and eventually learn when you need the heating or cooling on.

Some smart thermostats also control humidifiers, dehumidifiers, and fans. This helps gain better control over your home’s entire atmosphere and not just the heating and cooling.

All smart thermostats operate by an app on your smartphone. A few also offer support directly from the company, but most are designed to be used DIY. They can also hook up to home automation systems, such as Apple Home or Alexa.

HVAC Compatibility

Not all smart thermostats function the same way. Those designed to control a central heat or central air system handle less voltage than those operating a baseboard heater system, blower, or other type of heating system. Attempting to use a 24v HVAC system compatible thermostat with baseboard heaters would overload the thermostat. High-voltage thermostats are available, but not as many companies produce them. It is important to double-check that your system is compatible with the thermostat you are considering.


Smart thermostats are still a relatively new market. Some brands have several models available already, but not many brands exist currently.

Most brands make a variety of models, including a budget model as well as a few that handle higher voltage. The following brands have been making smart thermostats for several years now with good track records for quality:


High voltage compatible

Stylish design

Easy to use


Range of models

Has a budget model

Uses geofencing to learn behavior


Described as a learning thermostat

Range of models from basic to luxury

Stylish design

Uses algorithms to track behavior

Zen Within

Easy installation

Simple controls

Stylish design

Uses algorithms to track behavior


Uses geofencing to learn behavior

High-end thermostat

Works with Apple Home


* We selected different brands to improve and clarify the information contained in this cost guide. We do not receive any monetary compensation from these companies.


If your home has wires already available for installing a smart thermostat, the installation itself takes only minutes. However, many homes do not already have what is known as the C wire at this junction. The C wire is what powers the thermostat, and most smart thermostats will not work without one. If the wire is already in place, installation is as simple as disconnecting the old model by lifting it from the plate, disengaging the wires, and unscrewing its mounting plate. Then, attach the new plate by hooking up the wires and mounting the new unit.

If no C wire is in place, an electrician will need to run one. This job is neither hard nor long, but it will add to the time and expense of the project. Because most programmable and digital thermostats rely on a C wire, if you are replacing one of these with a smart thermostat, installation should take just minutes. When replacing an older model, however, installation could take up to an hour.

Many homeowners choose to DIY the installation to save money, but if you need a C wire, you need to hire an electrician. An electrician or your HVAC provider can install your new thermostat for you.


Labor for a smart thermostat installation is typically around $85 to $100 but may cost less if a handyman hooks it up. If you need a C wire run, expect the installation costs to be roughly double, at $170 to $200 for the job.

Including the cost of a new thermostat and installation, the total cost is around $300 on average.

Additional Considerations and Costs

  • Many smart thermostats 3 can send you 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 humidity levels 5 are 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.
  • It is common when changing the thermostat to need to make a small wall repair or touch-up to the paint or wallpaper to cover areas the new thermostat leaves exposed.


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

Installation along with the new thermostat averages $300 in most cases.

  • Are smart thermostats worth it?

If you have a fairly predictable schedule, then yes, they can save you money. If your schedule varies tremendously, they may not.

  • Do smart thermostats really save you money?

In some instances, they can save you money if your schedule is predictable enough for it to learn. Highly varied schedules may not see any savings.​

  • How does a smart thermostat work?

The thermostat uses either algorithms, sensors, or geofencing to determine when you are home or away and programs itself accordingly to turn on and off.

Was this guide helpful to you?

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
Anchorage, AK
Arlington, VA
Athens, GA
Aurora, CO
Baltimore, MD
Belleville, IL
Boston, MA
Bronx, NY
Brooklyn, NY
Bryan, TX
Charlotte, NC
Chicago, IL
Clementon, NJ
Cleveland, OH
Columbus, OH
Concord, NC
Dallas, TX
Dayton, OH
Denver, CO
Detroit, MI
El Paso, TX
Ewa Beach, HI
Fort Lauderdale, FL
Hartford, CT
Houston, TX
Indianapolis, IN
Jacksonville, FL
Kissimmee, FL
Las Vegas, NV
Laurel, MT
Littleton, CO
Los Angeles, CA
Memphis, TN
Miami, FL
Milwaukee, WI
Minneapolis, MN
New Haven, CT
New York, NY
Orange, CA
Palmdale, CA
Pensacola, FL
Philadelphia, PA
Phoenix, AZ
Pittsburg, CA
Pittsburgh, PA
Portland, OR
Redding, CA
Reno, NV
Richmond, VA
Riverdale, GA
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