Contents
- The Top 8
- Top 8 Smart Thermostats Reviewed in Detail
- 1. Best Overall
- 2. Best Compact
- 3. Runner-Up
- 4. Best Splurge
- 5. Most Versatile
- 6. Best for Daily Use
- 7. Best Design
- 8. Best Heavy-Duty
- Smart Thermostats Compared Side by Side
- How to Choose Smart Thermostats
- How We Reviewed
- Frequently asked questions
- What to look for
The best budget smart thermostat choice is important. The Amazon Smart Thermostat is our top pick. It connects easily to Alexa and Ring devices for comfort adjustments. The ecobee Smart Thermostat Essential is the value pick, saving money but requiring a bit more setup. You give up voice control features when picking the ecobee over the Amazon model. The tradeoff is between the convenience of voice control and the wider compatibility with heating systems of the ecobee. The rest of this page gives you more details on each option.
Paid links. We earn a commission from qualifying purchases at no extra cost to you. Prices are pulled live from Amazon and change often. How this works
The Top 8
Top 8 Smart Thermostats Reviewed in Detail
Here are our picks for the best budget smart thermostat options. Each offers unique benefits for different needs.
1. Best Overall
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 our best overall pick. This model stands out for its easy connection to Alexa and Ring devices. You can create comfort zones in your home by adjusting settings with voice commands. Compared to others, it offers a user-friendly experience that beginners will appreciate. This thermostat does require a common wire for installation, which might limit compatibility with some older systems. Users who want a simple, effective device for home comfort will benefit most from this option.
Pros
- Easy integration with Alexa and Ring devices
- User-friendly app for temperature adjustments
- Helps reduce energy usage effectively
Cons
- Requires a common wire (C-wire) for installation
- Limited compatibility with some older systems
Best for: Users looking for easy voice control. Not ideal for: Homes without a C-wire connection.
A smart choice for those wanting simplicity and energy savings.
2. Best Compact
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 a great budget option. It is Energy Star certified, promising up to 23% savings on energy bills. This model’s compatibility with 85% of HVAC systems makes it versatile. Unlike the Amazon model, it lacks voice control features, which can be a drawback for some users. However, if you prefer a more traditional setup, this one may suit you well. For energy-conscious users, the ecobee can offer significant savings over time.
Pros
- Energy Star certified for efficiency
- Adjusts settings based on user schedule
- Compatible with 85% of HVAC systems
Cons
- No voice control features
- More complex installation compared to others
Best for: Users focusing on energy savings. Not ideal for: Those wanting easy voice control options.
A strong pick for those who prioritize energy efficiency and cost savings.
3. Runner-Up
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 is a programmable option that also promises energy savings. It is ENERGY STAR certified, helping users reduce energy usage. Its sleek design adds a modern feel to any home. Compared to the Amazon Smart Thermostat, it lacks voice command capabilities as well. However, it excels in intuitive design and setup. Users should check compatibility with their HVAC systems before deciding, as some may need a C-wire.
Pros
- Stylish design that suits any decor
- Energy Star certified for savings
- Easy to program and adjust settings
Cons
- Might require a C-wire for some installations
- Fewer smart features than other models
Best for: Users who want a stylish thermostat. Not ideal for: Those needing extensive smart features.
A visually appealing option that makes scheduling simple.
4. Best Splurge
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 known for its easy DIY installation. It includes step-by-step instructions, making it beginner-friendly. The model is Energy Star certified, ensuring energy savings. Compared to the ecobee, it is more straightforward to set up but lacks advanced features. Users may miss out on smart learning capabilities. This thermostat is perfect for those who want something simple and effective without the extra complexity.
Pros
- Easy DIY installation with clear instructions
- Energy Star certified for efficiency
- No common wire needed for most systems
Cons
- Limited smart features compared to competitors
- Less advanced than other smart models
Best for: Beginners seeking simple installation. Not ideal for: Users wanting advanced smart features.
A practical choice for those who want a straightforward installation.
5. Most Versatile
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 is another stylish choice for smart home integration. It allows for energy savings while offering a sleek appearance. This model is also ENERGY STAR certified, but it requires an understanding of system compatibility. Compared to the standard Google Nest model, it has a similar functionality but a different aesthetic. Users should consider their home design and how the thermostat will fit within it.
Pros
- Modern design that matches contemporary styles
- Energy Star certified for energy efficiency
- Easy connectivity to Wi-Fi
Cons
- Requires checking compatibility with HVAC systems
- May need a C-wire for certain setups
Best for: Users wanting a stylish and energy-efficient thermostat. Not ideal for: Those without a compatible system.
A smart choice for those who value design and energy savings.
6. Best for Daily Use
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 ST55 offers great features for daily use. It supports DIY installation and is Energy Star certified. The app makes it easy to control your home temperature. This model, unlike the basic Sensi Lite, includes additional features for better user experience. However, it may still lack some advanced controls found in other models. This one suits users who want smart features without hassle.
Pros
- User-friendly mobile app for remote control
- Energy Star certified for efficiency
- Supports easy DIY setup
Cons
- Less advanced than some competitors
- May not offer extensive learning features
Best for: Users wanting ease of use and energy savings. Not ideal for: Those looking for advanced smart capabilities.
A reliable option for daily temperature management.
7. Best Design
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 offers a sleek and modern design. It features easy scheduling options, helping users save on energy bills. This model is less focused on smart features compared to others. It is a strong choice for those who prefer straightforward scheduling and energy efficiency. Its simple setup may appeal to those who want a no-fuss option. Users should be aware that personal preference in design can make a difference.
Pros
- Sleek design that fits modern homes
- Easy scheduling feature for energy savings
- Compatible with various HVAC systems
Cons
- Less smart technology than other choices
- Requires more manual setup than some models
Best for: Users who prefer simple scheduling. Not ideal for: Those wanting advanced smart features.
A solid choice for users looking for straightforward temperature control.
8. Best Heavy-Duty
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 in a pack of 2 offers convenience for larger homes. They allow for easy temperature control across multiple rooms. This model is similar to the single version but provides more units for coverage. However, the requirement for a common wire can limit where they can be installed. Users should ensure their home can support multiple units effectively before deciding.
Pros
- Includes two units for multi-room coverage
- Easy to control through Alexa and Ring
- Energy-saving features to reduce bills
Cons
- C-wire required for installation
- More units may not suit smaller homes
Best for: Larger homes needing multiple units. Not ideal for: Small spaces where one unit suffices.
Great for those who want coverage across multiple rooms.
Smart Thermostats Compared Side by Side
The table compares key features of each smart thermostat. Look at the columns to find specs like energy savings and compatibility. The best budget smart thermostat options can help you save energy and money.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Amazon Smart Thermostat | Best Overall | Amazon | $56.99 | Check |
| 2 | ecobee Smart Thermostat Essential | Best Compact | ecobee | $139 | Check |
| 3 | Google Nest Thermostat | Runner-Up | $117.4 | Check | |
| 4 | Sensi Lite Smart Thermostat | Best Splurge | Copeland | $64 | Check |
| 5 | Google Nest Thermostat | Most Versatile | $117.49 | Check | |
| 6 | Sensi Smart Thermostat | Best for Daily Use | Copeland | $103.49 | Check |
| 7 | Honeywell Home T5 Smart Wi-Fi Thermostat | Best Design | Honeywell Home | $77.25 | Check |
| 8 | Amazon Smart Thermostat | Best Heavy-Duty | 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 to Choose Smart Thermostats
Compatibility with HVAC systems
Check if the smart thermostat works with your heating and cooling system. Most smart thermostats fit 85% of systems, but always confirm compatibility using the manufacturer’s online checker.
Smart features
Look for features like voice control and mobile app access. The best options allow you to control your home temperature from anywhere.
Energy savings
Choose a thermostat that can save you money on energy bills. Some models claim to save up to 23% on heating and cooling costs.
Installation requirements
Consider how easy it is to set up. Some smart thermostats require a common wire (C-wire) for installation, while others do not.
Ease of use
Select a model with user-friendly controls. A simple interface can make adjusting settings much easier, especially for beginners.
How We Reviewed
Where our data comes from
We researched various smart thermostats using manufacturer websites, customer reviews, and expert sources. This gave us a clear view of features and specifications.
How we built this shortlist
We started with over 20 models and filtered them down based on energy savings, features, and user ratings. Only the best options made this list.
What we ruled out and why
Some products were removed due to lack of compatibility with common systems. Others did not have enough features or poor user reviews.
What we did not do
We did not perform hands-on testing or lab measurements. All data comes from reliable online sources and public reviews.
How often this page is updated
This page is updated regularly to reflect new products and changes in technology. We aim to keep it current every few months.
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 using your smartphone, tablet, or voice commands.
How does a smart thermostat save energy?
It can learn your schedule and adjust temperatures automatically, reducing energy usage when you are not home.
Do I need a C-wire for a smart thermostat?
Some smart thermostats need a common wire (C-wire) for power. Check the specifications before installation.
Can smart thermostats work without Wi-Fi?
Most smart thermostats require Wi-Fi to function fully. Without it, you may be limited to manual controls.
What is the best budget smart thermostat?
The Amazon Smart Thermostat is the best budget smart thermostat choice for its ease of use and Alexa compatibility.
What to look for
Energy Efficiency Ratings
Look for ENERGY STAR certified models. These thermostats are designed to use less energy while maintaining comfort. This helps you save money on bills.
User-Friendly Features
Choose smart thermostats with easy-to-use apps. Features like scheduling, reminders, and temperature adjustments from your phone improve convenience.
Voice Assistant Compatibility
Consider models that work with voice assistants like Alexa or Google Assistant. This adds convenience and allows for hands-free control.
Installation Ease
Select a thermostat that offers easy DIY installation. Some models include step-by-step instructions and built-in levels for better setup.
Smart Learning Capabilities
Models that learn your habits can adjust automatically. This means less manual input for you, saving energy and money.
About the author
Similar guides
- 8 Best Plant Labels in 2026 Tools & Garden
- 8 Best Lawn Edgers in 2026 Tools & Garden
- 8 Best Socket Organizers in 2026 Tools & Garden
- 8 Best Doorbell Chimes in 2026 Tools & Garden
- 8 Best Avocado Tools in 2026 Tools & Garden
- 8 Best Lawn Edgers in 2026 Tools & Garden
