Contents
- The Top 8
- Top 8 Smart Thermostats Reviewed in Detail
- 1. Editor’s Choice
- 2. Most Versatile
- 3. Best for Daily Use
- 4. Best Premium
- 5. Best Splurge
- 6. Best Design
- 7. Best for Beginners
- 8. Best for Small Spaces
- Smart Thermostats Compared Side by Side
- How We Reviewed
- How to Choose Smart Thermostats
- What to look for
- Frequently asked questions
The decision you face is whether a smart thermostat is worth it. The Amazon Smart Thermostat is our top pick because it works smooth with Alexa and Ring. It helps save energy and money, making it a smart choice for many homes. The ecobee Smart Thermostat Essential is our value pick. It provides great savings but requires a bit more effort during installation.
A common tradeoff in this category is between price and features. The Amazon model is user-friendly, while the ecobee offers advanced scheduling. The rest of this page will guide you through the best options available in smart thermostats.
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The Top 8
Top 8 Smart Thermostats Reviewed in Detail
Here are the top smart thermostat picks along with their features and benefits.
1. Editor’s Choice
Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required
- An Alexa thermostat – Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
- Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
- Save money and energy – After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
- Save energy – According to EPA estimates, ENERGY STAR certified thermostats save an average of $90 on yearly energy bills.
- Programmable thermostat and automatic control – Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
- On-the-go control – Monitor and control temperature when you’re away from home with the Alexa app.
- Do-it-yourself installation – The Alexa app will guide you through the installation process, but customer service is always available.
- Reliable – Made with Honeywell Home Thermostat Technology and backed by 130 years of experience.
- Create your Alexa+ home: With Alexa+, set routines using just your voice, control multiple devices at once, and chat casually to make requests.
The Amazon Smart Thermostat is a great choice for anyone looking to save money and energy. Its integration with Alexa and Ring allows you to control your home’s heating and cooling easily. The thermostat can adjust based on temperature readings or presence detection, ensuring comfort throughout the day. In comparison to other smart thermostats, it offers a straightforward installation process, making it perfect for beginners. Users appreciate its ability to create comfort zones, providing a tailored experience. However, it does require a C-wire, which could limit some users who do not have one available. Overall, this model shines for its ease of use and energy-saving features.
Pros
- Works with Alexa and Ring for easy voice control.
- Helps save energy and money by adjusting temperatures automatically.
- Creates comfort zones based on temperature readings.
Cons
- Requires a C-wire for installation.
- Limited compatibility with some HVAC systems.
Best for: Users looking for an easy-to-use thermostat with smart features.
Not ideal for: Those without a C-wire or advanced HVAC systems.
A smart choice for energy savings and convenience.
2. Most Versatile
ecobee Smart Thermostat Essential – WiFi Thermostat, Energy Star Certified
- Save up to 23% every year on heating and cooling costs, adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Compared to a hold of 72
- Compatible with 85% of systems, check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
- Change your temperature by easily tapping the color touchscreen or using the ecobee app. Plus, free software upgrades ensure you get the best out of your Smart Thermostat Essential, for years to come
- Automatically adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Keep track of your energy consumption when you’re on the go on the ecobee app
- Easy DIY install. No C Wire, no problem. Get the ecobee Power Extender Kit (PEK) for homes without a C-Wire and keep your walls looking nice with our trim kit – both sold separately
- Works with leading smart home ecosystems. Pair Smart Thermostat Essential with Apple HomeKit, Google Assistant, and Alexa
- Works with most 24 VAC HVAC equipment: Gas, oil, electric, dual fuel, forced air Conventional (2H/1C or 1H/2C) Heat Pump (2H/1C) Boilers. You can check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
- Add in a SmartSensor which allows you to measure the temperature in rooms that matter most. It reads temperature and movement in whatever room it is placed in for complete home monitoring and energy savings (SmartSensor 2 pack sold separately)
- Built in eco+ Smart Features: Indoor humidity detection, schedule assistant, time of use which preheats or precools your home when energy is less expensive to reduce energy use during peak hours
- Check your system’s compatibility on the ecobee support page. ecobee.com/compatibility/thermostat
The ecobee Smart Thermostat Essential is designed for energy savings and comfort. It is Energy Star certified, meaning it meets high efficiency standards. You can save up to 23% on heating and cooling costs with this model. While it is a versatile choice, installation can be more complex compared to the Amazon model. It supports 85% of HVAC systems, making it widely compatible. Users appreciate its scheduling feature, which allows it to adjust based on your routine. However, this model does not have voice control capabilities, which may deter some users. Overall, it’s a great choice for those seeking energy savings without extensive smart features.
Pros
- Energy Star certified for high energy savings.
- Scheduling feature optimizes comfort based on your routine.
- Compatible with 85% of HVAC systems.
Cons
- Installation may require more effort.
- No built-in voice control features.
Best for: Users focused on energy savings and scheduling features.
Not ideal for: Those wanting easy installation or voice control.
Ideal for energy-conscious homeowners looking to save on bills.
3. Best for Daily Use
Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Snow
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page.Connectivity Protocol : Wi-Fi.Connectivity Protocol : Wi-Fi
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory. Lock feature: No
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home; easily program an energy efficient schedule in the Google home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
- Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
- Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
- Control Nest Thermostat with Google Home and other smart home platforms. Compatible with Google Assistant and all Matter-certified voice assistants. Voice control requires a compatible smart device.
- Control the temperature with your voice using smart home devices that work with Google Assistant or Alexa[3]
- Nest Renew makes it simple to support clean energy right from home; it works with your Nest Thermostat[5] to help you automatically prioritize your usage[6] to times when energy is cleaner or less expensive
The Google Nest Thermostat offers a modern design and smart features that help you save energy. It is ENERGY STAR certified and helps maintain a comfortable home. This model connects easily to Wi-Fi, allowing for remote control via smartphone. Compared to other models, it has a sleek design that fits well in any home. Its user-friendly interface is another strong point, making it easy to adjust settings. However, it also requires a C-wire for installation, limiting its appeal to some buyers. Overall, the Google Nest presents an attractive option for those seeking modern design and functionality.
Pros
- Modern design that suits various home styles.
- Easy to use with a smartphone app.
- ENERGY STAR certified for efficient energy use.
Cons
- Requires a C-wire for installation.
- Limited compatibility with some HVAC systems.
Best for: Users wanting a stylish and functional thermostat.
Not ideal for: Those without a C-wire or simpler needs.
A stylish option for energy efficiency and smart control.
4. Best Premium
Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25
- EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes
- COMMON WIRE REQUIREMENTS: Common wire(C-Wire) required for heat pump and heat/cool only systems. C-wire not required on most systems
- SAVE ABOUT 23% ON HVAC ENERGY: ENERGY STAR-certified and packed with features that help you save money, including flexible scheduling, geofencing, remote access and usage reports
- PRIVACY PROTECTION: Sensi won’t sell your personal information to third parties or leverage your thermostat activity data for targeting or advertising purposes
- CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet
The Sensi Lite Smart Thermostat is designed for easy installation and energy efficiency. It features simple step-by-step instructions and a built-in level for DIY installation. Compared to other models, it offers a straightforward setup that appeals to beginners. This model is Energy Star certified and helps save about 23% on HVAC energy. However, it requires a C-wire for particular systems, which may deter some buyers. Overall, it’s a great choice for those who want an easy-to-install thermostat that still offers energy savings.
Pros
- Easy DIY installation with step-by-step instructions.
- Energy Star certified for efficiency.
- Compatible with most HVAC systems.
Cons
- Requires a C-wire for certain systems.
- Limited smart features compared to others.
Best for: DIY enthusiasts and beginners.
Not ideal for: Users seeking advanced smart features.
Simple installation with solid energy savings.
5. Best Splurge
Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Charcoal
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Connectivity : Wi-Fi – 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy Please refer to the product description section below for all applicable legal disclaimers.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home. Lock feature: No
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
- Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
- Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
- Control Nest Thermostat with Google Home and other smart home platforms. Compatible with Google Assistant and all Matter-certified voice assistants. Voice control requires a compatible smart device.
- Connectivity : Wi-Fi – 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy
- Please refer to the product description section below for all applicable legal disclaimers
The Google Nest Thermostat in Charcoal features a contemporary design and sturdy energy-saving capabilities. Its ENERGY STAR certification guarantees efficiency. This model supports both 2.4 GHz and 5 GHz Wi-Fi connections for reliable connectivity. When compared to other models, it stands out for its aesthetic appeal and user-friendly controls. The Nest app allows for easy adjustments and monitoring. Yet, like other Nest models, it requires a C-wire for setup, which may be a drawback. Overall, the Google Nest Thermostat combines style and smart features effectively.
Pros
- Sleek design that complements modern interiors.
- Supports both 2.4 GHz and 5 GHz Wi-Fi.
- ENERGY STAR certified for high efficiency.
Cons
- Requires a C-wire for installation.
- Not compatible with all HVAC systems.
Best for: Users wanting a stylish, energy-efficient thermostat.
Not ideal for: Those without a C-wire connection.
A stylish and efficient choice for modern homes.
6. Best Design
Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55
- PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
- EASY DIY INSTALLATION: Use the built-in level and step-by-step app instructions for a quick installation. Works with HVAC equipment found in most homes. Common wire (c-wire) is not required in most applications
- SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access and usage reports
- SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you don’t have to patch and paint your walls
- SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement
The Sensi Smart Thermostat comes with a range of smart features and easy installation. It is Energy Star certified and can save about 23% on HVAC energy. Compared to other thermostats, it offers a good balance of usability and efficiency. The installation requires no C-wire in most applications, making it accessible for many users. However, it has fewer smart features compared to some competitors. Overall, the Sensi Smart Thermostat is a practical option for those who want efficiency without complex connectivity.
Pros
- No C-wire required in most applications.
- Energy Star certified for efficiency.
- Easy DIY installation.
Cons
- Fewer smart features than some other options.
- Design may not appeal to everyone.
Best for: Users seeking an easy-to-install thermostat without a C-wire.
Not ideal for: Those wanting advanced smart features.
A practical choice for straightforward energy savings.
7. Best for Beginners
Honeywell Home T5 Smart Wi-Fi Thermostat
- High use of the scheduling feature of the T5 thermostat saved customers between 8 and 16% on heating and cooling bills. Dollar savings range based on nationwide average annual single-family detached home’s heat and cooling bills; actual savings varies based on consumption.
- Save Energy and Get Rewarded. Check with your energy provider about available energy savings rebates to save on your purchase. Plus, eligible customers can enroll in their local Utility’s “DEMAND RESPONSE PROGRAM” which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.
- 7-Day Flexible Scheduling or Location Based Temperature Control. It’s your choice. 7-day scheduling programs your thermostat. Geofence technology helps make you comfortable by using your smartphone’s location to know when you’re away and when you return.
- Auto Home and Away Mode. Enjoy ideal temperatures at home, then save when away.
- ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.
- C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.
- Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.
- The T5 thermostat is ENERGY STAR certified and you can program it based on your schedule, or let it adapt to your life as plans change
The Honeywell Home T5 Smart Wi-Fi Thermostat is built for users who want ease of scheduling. It allows customers to save between 8 and 16% on energy bills through its scheduling feature. Compared to other models, it offers a straightforward interface that is easy to work through. The T5 is compatible with various HVAC systems, making it quite versatile. However, its lack of advanced smart features may limit its appeal for tech-savvy users. Overall, it’s a solid choice for those who prioritize simple scheduling.
Pros
- Easy to use scheduling feature.
- Compatible with various HVAC systems.
- Saves 8 to 16% on energy bills.
Cons
- Limited smart features compared to others.
- May not suit tech-savvy users.
Best for: Users preferring straightforward scheduling options.
Not ideal for: Those looking for advanced features.
An easy choice for simple energy management.
8. Best for Small Spaces
Amazon Smart Thermostat – Save money and energy – Works with Alexa and Ring – C-wire required (Pack of 2)
- The information below is per-pack only
- An Alexa thermostat – Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
- Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
- Save money and energy – After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
- Save energy – According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 on yearly energy bills.
- Programmable thermostat and automatic control – Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
- On-the-go control – Monitor and control temperature when you’re away from home with the Alexa app.
- Do-it-yourself installation – The Alexa app will guide you through the installation process, but customer service is always available.
- Reliable – Made with Honeywell Home Thermostat Technology and backed by 130 years of experience.
- Create your Alexa+ home: With Alexa+, set routines using just your voice, control multiple devices at once, and chat casually to make requests.
The Amazon Smart Thermostat (Pack of 2) offers the same great features as the single pack but at a better value. It comes with Alexa integration, allowing voice control and energy savings. This model is easy to install and helps create comfort zones in your home. Compared to the single pack, this option is more cost-effective. However, if you only need one, the pack may not be necessary. Overall, it’s a smart option for families or those in larger homes.
Pros
- Includes two thermostats for better overall value.
- Works with Alexa for voice control.
- Helps create comfort zones with ease.
Cons
- C-wire required for proper installation.
- Bulkier option if only one thermostat is needed.
Best for: Families or larger homes needing multiple units.
Not ideal for: Individuals looking for a single thermostat.
An economical choice for households needing multiple thermostats.
Smart Thermostats Compared Side by Side
This comparison table shows the key features of each smart thermostat. Look at the columns for specifications and best uses. If you wonder if a smart thermostat is worth it, this is the place to find the right choice.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Amazon Smart Thermostat | Editor's Choice | Amazon | $56.99 | Check |
| 2 | ecobee Smart Thermostat Essential | Most Versatile | ecobee | $139 | Check |
| 3 | Google Nest Thermostat | Best for Daily Use | $117.4 | Check | |
| 4 | Sensi Lite Smart Thermostat | Best Premium | Copeland | $64 | Check |
| 5 | Google Nest Thermostat | Best Splurge | $117.49 | Check | |
| 6 | Sensi Smart Thermostat | Best Design | Copeland | $103.49 | Check |
| 7 | Honeywell Home T5 Smart Wi-Fi Thermostat | Best for Beginners | Honeywell Home | $77.25 | Check |
| 8 | Amazon Smart Thermostat | Best for Small Spaces | Amazon | $109.99 | Check |
| 9 | ecobee Smart Thermostat Premium | — | ecobee | $259.99 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How We Reviewed
Where our data comes from
We gathered information from various trusted sources, including manufacturer websites, customer reviews, and expert articles. This gave us a well-rounded view of each smart thermostat. We analyzed over 20 products in the smart thermostat category.
How we built this shortlist
We focused on compatibility, ease of installation, energy savings, and user-friendly features. Each product was evaluated based on these criteria. We included the top eight models that consistently received high ratings.
What we ruled out and why
Models without Energy Star certification were excluded. They don’t meet energy efficiency standards. We also ruled out products with poor customer feedback and low ratings.
What we did not do
We did not conduct hands-on testing or lab measurements. All findings are based on desk research and user reviews. No arbitrary scores were assigned to any model.
How often this page is updated
This page will be updated regularly to include new products and changes in the market. Expect updates every few months to ensure you receive the latest information.
How to Choose Smart Thermostats
Check Compatibility
Before buying, check your heating and cooling system’s compatibility with the smart thermostat. Most thermostats work with standard systems, but some may not support heat pumps. Use the compatibility checker on the manufacturer’s website for accuracy.
Consider Features
Look for features that match your lifestyle. If you are often away from home, a thermostat with scheduling can save energy. Features like energy reports can help track savings and usage over time.
Ease of Installation
Some thermostats are easier to install than others. If you want a DIY option, choose a model with clear instructions and no special wiring needed. The simpler the installation, the less frustration you’ll face.
Smart Home Integration
Think about how the thermostat fits with your smart home devices. If you already have Alexa or Google Home, choose a thermostat that works well with these systems. This can enhance your experience and control.
Energy Savings Potential
A good smart thermostat can save you money on energy bills. Look for models that are Energy Star certified. These are tested for efficiency and can help you save money over time.
What to look for
Energy Efficiency
Energy efficiency is a key factor in choosing a smart thermostat. Look for models with Energy Star certification. They are known to save energy, which lowers your electricity bills and helps the environment.
User-Friendly Interface
A user-friendly interface is essential for smooth operation. Many models come with smartphone apps for easy control. Make sure the app is simple to use and offers features you need.
Installation Requirements
Installation can vary significantly between models. Some require a C-wire, while others do not. If you are not experienced with electrical work, choose a thermostat that offers easy DIY installation.
Smart Features
Smart features can greatly enhance your experience. Look for thermostats with scheduling, geofencing, and energy usage reports. These features can help you save money and improve comfort.
Compatibility with HVAC Systems
Compatibility with your HVAC system is critical. Some smart thermostats work with most systems, while others have limitations. Check the manufacturer’s compatibility checker before you buy.
Frequently asked questions
What is a smart thermostat?
A smart thermostat is a device that allows you to control your home’s heating and cooling remotely. You can adjust the temperature using an app on your smartphone or through voice commands.
Is a smart thermostat worth it?
Many people find that a smart thermostat is worth it due to energy savings and convenience. They can help reduce your heating and cooling costs while providing comfort.
Can a smart thermostat save you money?
Yes, a smart thermostat can save money by adjusting temperatures when you are not home. Many models help optimize energy use, reducing your monthly energy bills.
Do I need a C-wire for a smart thermostat?
Some smart thermostats require a C-wire for installation, while others do not. Check the installation requirements of your chosen model to be sure.
How do I install a smart thermostat?
Installing a smart thermostat typically involves removing your old thermostat and connecting the new one. Many models come with simple instructions and installation guides to help.
Shopping around? We have 22 more smart thermostat guides for other budgets and use cases.
Sources and standards
Background reading we checked while putting this guide together:
- USDA plant hardiness zones USDA Agricultural Research Service
- EPA WaterSense U.S. Environmental Protection Agency
About the author
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