Contents
- The Top 8
- Top 8 Smart Thermostats Reviewed in Detail
- 1. Top Pick
- 2. Best Budget
- 3. Best Premium
- 4. Best Splurge
- 5. Best Lightweight
- 6. Best for Small Spaces
- 7. Best Value
- 8. Best Design
- Smart Thermostats Compared Side by Side
- How to Choose Smart Thermostats
- How We Reviewed
- Frequently asked questions
- What to look for
Finding the best affordable smart thermostat can be hard. The Amazon Smart Thermostat is our top pick. It helps save money and energy while working smooth with Alexa and Ring. For those on a budget, the ecobee Smart Thermostat Essential offers great savings, but you lose some smart features. Most buyers decide between easy installation and advanced features. This page explores all your options to find the right fit.
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The Top 8
Top 8 Smart Thermostats Reviewed in Detail
Here are the top options for smart thermostats that balance affordability with functionality.
1. Top Pick
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 helps you save energy and works with Alexa. It requires a C-wire for installation. This model lets you create comfort zones by connecting to Alexa devices. You can adjust heating and cooling based on temperature or presence detection.
Pros
Easy to use with Alexa and other devices. Helps reduce energy usage effectively.
Cons
Installation requires a C-wire, which may not be available in all homes.
This thermostat fits homes with existing C-wire setups and users who want Alexa integration.
The Amazon Smart Thermostat is a solid choice if you need smart features and Alexa compatibility.
2. Best Budget
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 Energy Star certified. It can save you up to 23% on heating and cooling costs. This thermostat adjusts to your schedule, which helps save energy.
Pros
Energy savings are impressive, and it is easy to program.
Cons
Compatibility with systems may be limited; check your system before purchasing.
Suitable for users looking to maximize energy efficiency and those with compatible heating and cooling systems.
You will find the ecobee Smart Thermostat Essential offers great energy savings for many users.
3. Best Premium
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
Google’s Nest Thermostat is another Energy Star certified model. It helps you save energy while keeping your home comfortable. You can check system compatibility before buying.
Pros
User-friendly interface and easy installation process.
Cons
Some users may find it less customizable than other smart thermostats.
This thermostat is great for those who want a balance of comfort and energy savings.
The Google Nest Thermostat is effective for users who value convenience and efficiency in their heating and cooling.
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 offers easy installation with step-by-step instructions. This model is designed for most HVAC systems and requires a common wire for some setups.
Pros
Simple DIY installation and good energy-saving features.
Cons
The need for a common wire can limit some installations.
Best for users comfortable with DIY projects and those with compatible HVAC systems.
Sensi Lite Smart Thermostat is a good choice for energy savings and ease of installation.
5. Best Lightweight
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
Google’s Nest Thermostat in charcoal color provides a stylish look. It features Wi-Fi connectivity and is energy efficient. You can check system compatibility before purchasing.
Pros
Attractive design and efficient energy use.
Cons
Some users may have compatibility issues if their systems are older.
Ideal for those who appreciate aesthetics in technology and need energy savings.
The charcoal version of the Google Nest Thermostat combines style with functionality effectively.
6. Best for Small Spaces
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 includes privacy protection to keep your data safe. It also features easy installation and does not require a common wire for most setups.
Pros
Focus on user privacy and straightforward installation.
Cons
Limited features compared to some competitors.
Best for users who prioritize privacy and want a simple thermostat.
Sensi Smart Thermostat is a solid option if you want basic features with added privacy.
7. Best Value
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
Honeywell Home T5 Smart Wi-Fi Thermostat uses scheduling to help cut energy costs. Users report savings between 8% to 16% on heating and cooling bills.
Pros
Effective scheduling features to optimize energy use.
Cons
Installation may be more complex for some users.
Great for users who want to manage energy costs efficiently.
The Honeywell Home T5 Smart Thermostat is a smart choice for those who value savings through scheduling.
8. Best Design
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 is a great way to upgrade multiple rooms. Like its single unit, it requires a C-wire and works well with Alexa.
Pros
Great value for those looking to upgrade more than one thermostat.
Cons
Still requires C-wire, which may not be available everywhere.
Ideal for homes that need multiple smart thermostats and already have C-wire setups.
The Amazon Smart Thermostat pack of 2 is beneficial for users wanting to enhance their home’s smart features.
Smart Thermostats Compared Side by Side
This table compares the best affordable smart thermostat choices. The columns show brand, special features, and energy-saving capabilities. Use it to find the best fit for your home.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Amazon Smart Thermostat | Top Pick | Amazon | $56.99 | Check |
| 2 | ecobee Smart Thermostat Essential | Best Budget | ecobee | $139 | Check |
| 3 | Google Nest Thermostat | Best Premium | $117.4 | Check | |
| 4 | Sensi Lite Smart Thermostat | Best Splurge | Copeland | $64 | Check |
| 5 | Google Nest Thermostat | Best Lightweight | $117.49 | Check | |
| 6 | Sensi Smart Thermostat | Best for Small Spaces | Copeland | $103.49 | Check |
| 7 | Honeywell Home T5 Smart Wi-Fi Thermostat | Best Value | Honeywell Home | $77.25 | Check |
| 8 | Amazon Smart Thermostat | Best Design | 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
Consider Compatibility
Always check if the smart thermostat works with your HVAC system. Most modern units need a common wire (C-wire). However, some can work without it. Incompatibility can lead to poor performance. Use the compatibility checker from the thermostat brand to ensure it fits your setup.
Look for Energy Saving Features
Choose a model that helps save on energy bills. Some thermostats claim to save over 20% annually, like ecobee. Look for features like scheduling and remote access that help you manage energy better. Energy Star certification is also a good sign that it’s energy efficient.
Check Smart Home Compatibility
Make sure your chosen thermostat works with your smart home devices. Most models work with Alexa or Google Assistant. This allows you to control your thermostat using voice commands. If you have other smart devices, ensure compatibility for better integration.
Installation Type Matters
Some thermostats are easy to install yourself, while others may require professional help. DIY models often come with step-by-step instructions. Consider how comfortable you are with installations. If you prefer convenience, look for models that offer professional installation services.
User-Friendly Interface
A clear and simple interface is important for everyday use. Touchscreen controls or an app for your phone can make adjustments easy. Make sure the thermostat has a user-friendly design. A complicated interface can lead to frustration.
How We Reviewed
Where our data comes from
We gathered data from various trusted sources. These include manufacturer websites, user reviews, and product comparison sites. This ensured we had a well-rounded view of each thermostat’s features.
How we built this shortlist
Our shortlist includes top affordable smart thermostats based on features and customer ratings. We looked at over 20 models, filtering by compatibility, energy savings, and user reviews. Only the best made it to this list.
What we ruled out and why
We excluded models that lacked central heating and cooling support. Units with poor user feedback about their interface were also ruled out. Ensuring compatibility and reliability was key in our selection process.
What we did not do
No hands-on testing was performed. All research is based on data from reliable sources. We did not conduct lab measurements or create scores for products, ensuring our analysis is objective.
How often this page is updated
This page is reviewed regularly for accuracy. We aim to update it every six months or sooner if major product changes occur. This ensures you always have the latest information and options.
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 settings from your phone or using voice commands. They often learn your habits and optimize energy use.
How do I install a smart thermostat?
Installation can vary by model. Many come with DIY instructions. Some require a common wire for power, while others can work without it. If unsure, consider hiring a professional for installation.
Are smart thermostats worth the investment?
Yes, smart thermostats can save you money on energy bills over time. They allow for better energy management and offer features like scheduling and remote control. These benefits often outweigh the initial cost.
Can I control my smart thermostat with my phone?
Most smart thermostats let you control them through a mobile app. This allows you to adjust settings from anywhere. Make sure your model supports this feature before buying.
How do I choose the best affordable smart thermostat?
Consider compatibility with your HVAC system, energy-saving features, and ease of installation. Look for models that are compatible with your existing smart home devices for better integration.
What to look for
Energy Efficiency
Energy efficiency is a key aspect when choosing a smart thermostat. Look for models that are Energy Star certified. These products typically save at least 10% more energy than non-certified models. This can lead to significant savings on your utility bills.
Compatibility with HVAC Systems
Each thermostat has specific compatibility requirements. Most smart thermostats require a C-wire or other connections to function properly. Check if your HVAC system meets these requirements before making a purchase to avoid installation issues.
Smart Home Integration
If you own other smart devices, ensure your thermostat works with them. Many models support Alexa, Google Assistant, and other smart home systems. This makes it easier to control your thermostat using voice commands or routines.
User-Friendly Interface
A simple and intuitive interface can enhance user experience. Look for models with a touchscreen or easy-to-work through app. This makes adjusting settings and accessing features simpler, especially for less tech-savvy users.
Installation Complexity
Installation methods vary between models. Some are designed for DIY installation, while others may need professional help. Assess your comfort level with installations before deciding on a model. A complicated installation could lead to frustration.
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:
- EPA safe pest control U.S. Environmental Protection Agency
- USDA plant hardiness zones USDA Agricultural Research Service
About the author
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