9 Best Smart Thermostats for Energy Savings

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Smart thermostats have transformed how you control your home’s comfort, offering convenience, energy savings, and sometimes even voice control. But with so many options, picking the right one can feel overwhelming.

This guide breaks down the top nine models, focusing on features like energy savings, compatibility, and ease of use, to help you choose the perfect thermostat for your needs and budget.

Quick Comparison

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ecobee Smart Thermostat Essential – Budget-Friendly Savings

ecobee Smart Thermostat Essential - WiFi Thermostat, Energy Star Certified

Brand: ecobee

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A cost-effective way to start saving energy with smart control.

The ecobee Smart Thermostat Essential is an excellent entry point into smart home comfort. It promises up to 23% annual savings on heating and cooling costs by automatically adjusting to your schedule, saving energy when you’re away and optimizing comfort when you’re home. The color touchscreen makes temperature changes simple, and the free software upgrades ensure your device stays current.

Compatibility is a strong suit, working with 85% of systems, and you can easily verify yours using the online checker. The ecobee app allows remote control, so you can adjust settings from anywhere. If you want a reliable, straightforward smart thermostat without breaking the bank, this model delivers solid performance and clear energy-saving benefits.

✓ Pros

  • Saves up to 23% annually
  • Easy color touchscreen
  • Free software upgrades
✗ Cons

  • Lower compatibility than others
  • No built-in sensor

ecobee Smart Thermostat Enhanced – Smart Scheduling and Radar

ecobee Smart Thermostat Enhanced, Programmable Wifi Thermostat

Brand: ecobee

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A smart thermostat that learns and adapts for maximum comfort.

The ecobee Smart Thermostat Enhanced takes savings up to 26% per year by automatically adjusting when you’re away, ensuring you never heat or cool an empty home. Its built-in radar occupancy detection preheats or precools your home before you arrive, so it’s always the perfect temperature when you walk in. This model learns your temperature preferences and schedule, making it feel truly intuitive.

Compatibility is broad, working with 90% of systems, and the included Power Extender Kit and Trim Kit simplify installation. The enhanced features, like radar occupancy, set it apart from the Essential model, offering a more proactive approach to comfort. If you want a thermostat that anticipates your needs, this is a smart choice.

✓ Pros

  • Radar occupancy detection
  • Saves up to 26% annually
  • Learns your preferences
✗ Cons

  • Requires C-wire or PEK
  • Higher price than Essential

Google Nest Thermostat – Sleek Design and Easy Scheduling

Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Charcoal

Brand: Google

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A stylish, easy-to-use thermostat that pairs well with Google Home.

The Google Nest Thermostat is an ENERGY STAR certified smart thermostat that helps you save energy while staying comfortable. It’s designed to work without a C-wire in most homes, though some systems may need one, and it turns itself down when you leave to avoid wasting energy. You can create an energy-efficient schedule directly from the Google Home app on your Android or iPhone.

Its sleek charcoal finish looks great in any home, and the intuitive interface makes it easy to adjust. The Nest Thermostat is a solid choice if you’re already in the Google ecosystem, offering seamless integration with Google Assistant. For a stylish, user-friendly thermostat that helps you save, this is a strong contender.

✓ Pros

  • Works without C-wire often
  • Sleek design
  • Easy app scheduling
✗ Cons

  • No built-in sensor
  • Limited compatibility with some systems

Amazon Smart Thermostat – Alexa Integration and Comfort Zones

Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required

Brand: Amazon

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A smart choice for Alexa users wanting easy energy savings.

The Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and reduce energy usage. It works with Alexa, allowing you to control your home’s temperature with your voice, and it can create comfort zones by connecting to select Alexa devices. This means it can automatically adjust heating and cooling based on temperature readings or presence detection in different rooms.

It’s ENERGY STAR certified, and according to EPA estimates, these thermostats save an average of $90 on yearly energy bills. After purchase, Amazon sends you an email with details about potential rebates from energy providers in your area. If you’re invested in the Alexa ecosystem, this thermostat offers seamless integration and smart zone control.

✓ Pros

  • Alexa voice control
  • Comfort zones with Alexa
  • Potential rebates
✗ Cons

  • Requires C-wire
  • No touchscreen display

Honeywell Home RTH9585WF – Colorful Touchscreen and Flexibility

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, C-Wire Required, Not Compatible with Line Volt Heating Gray

Brand: Honeywell Home

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A colorful, flexible thermostat that adds style to your wall.

The Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat lets you personalize its touchscreen to match your décor, making it a stylish addition to any room. It offers flexible programming options to fit your schedule or your utility company’s peak rate pricing, helping you save energy and potentially earn rebates. The bright, easy-to-read touchscreen makes operation intuitive.

This thermostat is Alexa ready, so you can control it with your voice, and it’s ENERGY STAR certified. It requires a C-wire, so check compatibility before purchasing. If you want a customizable, feature-rich thermostat with a vibrant display, this Honeywell model is a great option.

✓ Pros

  • Personalizable touchscreen
  • Flexible scheduling
  • Alexa compatible
✗ Cons

  • Requires C-wire
  • No geofencing feature

ecobee Smart Thermostat Premium – Premium Features and Air Quality

ecobee Smart Thermostat Premium - WiFi, Siri & Alexa Built-In, Smart Sensor

Brand: ecobee

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A premium thermostat with air quality monitoring and smart home integration.

The ecobee Smart Thermostat Premium is the top-tier model, offering up to 26% annual savings and ENERGY STAR certification. It includes a SmartSensor, a $50 value, that prompts the thermostat to adjust temperatures based on occupancy, ensuring comfort where you are. It also connects seamlessly to the ecobee Smart Doorbell Camera, allowing you to view a live stream of your door and use two-way talk directly from the thermostat.

Compatibility is excellent, working with 95% of systems, and the built-in air quality monitor alerts you to poor air quality, provides tips to improve it, and reminds you when it’s time to change filters. With Siri and Alexa built-in, this thermostat is a hub for your smart home. If you want the most advanced features and don’t mind a higher price, this is the ultimate choice.

✓ Pros

  • Built-in air quality monitor
  • Includes SmartSensor
  • Works with Siri and Alexa
✗ Cons

  • Higher price point
  • Requires C-wire or PEK

Sensi Lite Smart Thermostat – DIY-Friendly and Private

Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25

Brand: Sensi

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A private, easy-to-install thermostat that saves energy without selling your data.

The Sensi Lite Smart Thermostat is designed for easy DIY installation, with a built-in level and step-by-step instructions. It works with HVAC equipment found in most homes, and while a C-wire is required for heat pump and heat/cool only systems, it’s not needed on most others. This ENERGY STAR-certified thermostat can save about 23% on HVAC energy with features like flexible scheduling, geofencing, and usage reports.

Privacy is a key focus: Sensi won’t sell your personal information to third parties or use your data for advertising. This makes it a great choice if you’re concerned about data privacy. With Alexa compatibility and remote access, the Sensi Lite offers solid functionality at an affordable price.

✓ Pros

  • Easy DIY installation
  • Privacy protection
  • Saves about 23% energy
✗ Cons

  • C-wire needed for some systems
  • No touchscreen

Sensi Smart Thermostat – Classic Design with Modern Features

Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55

Brand: Sensi

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A familiar-looking thermostat that brings smart savings without a steep learning curve.

The Sensi Smart Thermostat combines a classic, familiar design with modern smart features. It has buttons and fits the same space as a traditional thermostat, so you don’t need to patch and paint your walls. Installation is easy with the built-in level and step-by-step app instructions, and it works with most HVAC equipment. A C-wire is not required for most systems, simplifying setup.

This ENERGY STAR-certified thermostat can save about 23% on HVAC energy with flexible scheduling, remote access, and usage reports. Like the Lite model, it offers privacy protection, ensuring your data isn’t sold. If you prefer a traditional look but want smart capabilities, this Sensi model is a perfect fit.

✓ Pros

  • Classic design fits existing space
  • Easy DIY installation
  • Privacy protection
✗ Cons

  • No touchscreen
  • C-wire needed for some systems

vine Smart Thermostat – Versatile Compatibility and Voice Control

vine Smart Thermostat for House, WiFi Thermostats for Home Compatible with Alexa and Google Assistant, 7day x 8period Programmable, Energy Star Certified, C-Wire Required

Brand: vine

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A versatile, voice-controlled thermostat that fits most homes and saves energy.

The vine Smart Thermostat offers broad compatibility, working with 90% of 24V AC systems, including conventional and heat pump setups. It requires a C-wire, so be sure to check compatibility via the QR code before purchase. You can control it remotely using the Vine Thermostat App or Smart Life App, and it works with Alexa and Google Assistant for voice control.

With 7-day programmable schedules and Auto Home/Away mode, it helps you save energy by adjusting when you’re not home. The vine thermostat is a great option if you want a versatile, voice-controlled thermostat that integrates with your existing smart home setup. Its energy-saving features make it a practical choice for reducing your utility bills.

✓ Pros

  • Works with Alexa and Google
  • Broad system compatibility
  • 7-day scheduling
✗ Cons

  • Requires C-wire
  • Less known brand

Buyer’s Guide: What to Consider

Choosing the right smart thermostat involves considering several key factors. Here are five essential points to guide your decision, ensuring you pick a model that fits your home, lifestyle, and budget.

  • Compatibility: Check if the thermostat works with your HVAC system. Most models list compatibility percentages, and some require a C-wire. Use online checkers to verify before buying.
  • Energy Savings: Look for ENERGY STAR certification and features like geofencing, scheduling, and away modes. These can significantly reduce your heating and cooling costs, often by 20% or more.
  • Smart Features: Consider voice control with Alexa or Google Assistant, remote access via apps, and learning capabilities. Some models include sensors for room-specific temperature control.
  • Installation: DIY-friendly models come with built-in levels and step-by-step instructions. Others may require professional installation, especially if a C-wire is needed. Assess your comfort level with wiring.
  • Privacy: Some brands, like Sensi, prioritize privacy by not selling your data. If this matters to you, review the privacy policies of different manufacturers before making a choice.

Conclusion

Smart thermostats are a worthwhile investment for any homeowner looking to save energy and increase comfort. From budget-friendly options like the ecobee Essential to feature-rich models like the ecobee Premium, there’s a thermostat for every need. Consider your home’s compatibility, desired features, and budget to make the best choice.

For most people, the ecobee Smart Thermostat Enhanced offers a great balance of features and price, while the Google Nest Thermostat is perfect for Google users. If privacy is your priority, the Sensi models are excellent. Whichever you choose, you’ll enjoy lower energy bills and a more comfortable home.

Erica Steven Author
Co-Founder and Content Manager at 

Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.

With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.

Whether you're looking for camping equipment or the latest fashion accessories, Erica's articles are the perfect resource for finding the best products that fit your lifestyle.

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