Buy Smart Thermostats under $100 for Energy Savings and Alexa Control

User avatar placeholder
Written by fixonelectronics

November 12, 2025

Smart thermostats under $100 offer great value for controlling home temperatures easily. These devices help save energy and reduce bills without high costs.

Choosing the right smart thermostat can improve comfort and cut utility expenses. Many models work with Alexa or Google Assistant for voice control. Some require a C-wire for installation, while others do not. Features include programmable schedules, touchscreen displays, and energy-saving modes.

Brands like Amazon, Google Nest, Honeywell, Emerson Sensi, and Vine provide reliable options. Whether upgrading an old thermostat or installing a new one, affordable smart thermostats bring convenience and efficiency. This guide reviews top models under $100 to help find a smart thermostat that fits your home and budget.

Like-new Amazon Smart Thermostat

Like-New Amazon Smart Thermostat – ENERGY STAR certified, DIY install, Works with Alexa – C-wire required

The Like-New Amazon Smart Thermostat is ideal for homeowners and renters who want an efficient, easy-to-install smart device to control their home heating and cooling systems. Perfect for tech-savvy individuals who already use Alexa or want to integrate smart home features seamlessly, this thermostat is best suited for those with existing C-wire setups, ensuring consistent power supply for optimal performance.

Pros:

  • ENERGY STAR certified for energy efficiency and cost savings
  • DIY installation makes setup simple and quick
  • Compatible with Alexa for convenient voice control
  • Compact and sleek white design fits any home decor
  • Lightweight and unobtrusive with dimensions of 3.56 x 3.56 x 0.84 inches

Cons:

  • C-wire required, which may limit installation options in some homes
  • Lacks some advanced features found in higher-end smart thermostats
  • Limited color options, only available in white

The Amazon Smart Thermostat offers a streamlined approach to home temperature management, focusing on energy savings and ease of use. Its ENERGY STAR certification ensures that it meets strict efficiency standards, helping users reduce their utility bills without sacrificing comfort. The device’s compatibility with Alexa allows for hands-free adjustments, enhancing convenience for busy households or those with mobility challenges.

Installation is straightforward thanks to the DIY setup, making it accessible even for those with limited technical skills. The requirement of a C-wire ensures the thermostat receives a steady power supply, which translates to reliable operation and connectivity. With its compact and modern design, the thermostat blends seamlessly into any room, providing smart functionality without disrupting aesthetics.

To buy this product, click here.

Amazon Smart Thermostat

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

The Amazon Smart Thermostat is ideal for homeowners and renters looking to save money and energy by optimizing their heating and cooling systems. It is perfect for tech-savvy users who want seamless integration with Alexa and Ring devices to control their home climate hands-free. However, it requires a C-wire, so those without this wiring in their HVAC system should ensure compatibility before purchasing.

Pros:

  • Compatible with Alexa and Ring for convenient voice control and smart home integration
  • Helps save money and energy by efficiently managing temperature settings
  • Sleek and compact design with dimensions 3.56 x 3.56 x 0.84 inches and lightweight at 0.24125 pounds
  • Easy to install for systems with C-wire
  • Made by trusted brand Amazon ensuring reliability and support

Cons:

  • Requires a C-wire which may not be available in all homes
  • Limited color option, available only in white
  • May not support all HVAC system types

The Amazon Smart Thermostat features intuitive controls that allow users to easily adjust their home temperature using voice commands through Alexa or the Amazon app. This smart integration not only adds convenience but also enables users to schedule temperature changes and monitor energy usage remotely, contributing to significant energy savings over time. Its compact and modern design fits seamlessly into any home décor without drawing unnecessary attention.

Additionally, the thermostat’s compatibility with Ring devices enhances home automation, allowing users to create routines that combine security and climate control. The requirement of a C-wire ensures a reliable power source, which supports stable performance and prevents the need for frequent battery replacements. Overall, this device provides an affordable and efficient way to modernize your home’s heating and cooling system while reducing energy bills.

To buy this product, click here.

Google Nest Thermostat

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

The Google Nest Thermostat – Smart Thermostat for Home is ideal for homeowners and renters who want to optimize their home’s heating and cooling efficiently while saving on energy costs. It is perfect for tech-savvy individuals looking for a programmable WiFi thermostat that seamlessly integrates with smart home systems and offers easy remote control. Those seeking a sleek, modern design in charcoal color to complement their home décor will also appreciate this device.

Pros:

  • Easy-to-use programmable WiFi thermostat with remote control via smartphone app
  • Compact design with dimensions (Height: 1.07″, Width: 3.31″, Length: 3.31″) and lightweight (0.31 pounds)
  • Energy-saving features that help reduce heating and cooling costs
  • Seamless integration with Google smart home ecosystem
  • Stylish charcoal color that fits modern home aesthetics

Cons:

  • Requires WiFi connection for full functionality
  • May need professional installation for some HVAC systems
  • Limited compatibility with non-Google smart home devices

The Google Nest Thermostat combines advanced technology with user-friendly design, making it a standout choice for modern homes. Its programmable features allow users to set schedules that match their daily routines, helping to maximize comfort while minimizing unnecessary energy consumption. Thanks to its compact size and sleek charcoal finish, it fits effortlessly into any room without being obtrusive.

With WiFi connectivity, users can control the thermostat remotely via the Google Home app, enabling adjustments on-the-go to ensure the perfect temperature awaits when they arrive home. Integration with the broader Google ecosystem means voice commands and automation are also supported, enhancing convenience and smart living. Overall, the Google Nest Thermostat offers a blend of style, efficiency, and smart technology that benefits any home environment.

To buy this product, click here.

Emerson Sensi Touch Wi-fi Smart Thermostat

Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75 Black 5.625

The Emerson Sensi Touch Wi-Fi Smart Thermostat is ideal for homeowners and tech enthusiasts looking to enhance their home’s heating and cooling efficiency with smart technology. If you want a user-friendly, energy-saving thermostat that integrates seamlessly with smart home devices like Alexa, this product is designed for you. It requires a C-wire for installation, making it suitable for homes with the necessary wiring infrastructure.

Pros:

  • Features a vibrant touchscreen color display for easy control and status monitoring.
  • Compatible with Alexa and other smart home platforms for voice control and automation.
  • Energy Star Certified, helping reduce energy consumption and lower utility bills.
  • Compact and sleek black design (5.625″ x 3.4″ x 1.17″) fits well in modern home interiors.
  • Offers remote access via the Sensi app for convenient temperature adjustments from anywhere.

Cons:

  • Installation requires a C-wire, which may not be present in all homes.
  • May require professional installation for those unfamiliar with thermostat wiring.
  • Limited compatibility with some HVAC systems outside typical residential setups.

The Emerson Sensi Touch Smart Thermostat boasts a user-friendly touchscreen color display that makes adjusting your home’s temperature both intuitive and visually appealing. With its smart Wi-Fi connectivity, users can control their thermostat remotely using the Sensi app or voice commands through Alexa, providing unmatched convenience and flexibility. This connectivity also allows for scheduling and geofencing, ensuring your HVAC system operates only when needed, which maximizes energy savings.

Beyond its convenience features, the thermostat’s Energy Star certification highlights its efficiency and commitment to reducing energy consumption, which can translate into noticeable savings on utility bills. Its sleek, compact design in black complements a variety of home decors without being obtrusive. While installation requires a C-wire, this requirement ensures stable power supply and reliable operation, preventing common issues associated with battery-only thermostats. Overall, the Emerson Sensi Touch is a smart investment for anyone looking to upgrade to a modern, energy-efficient home climate control system.

To buy this product, click here.

Honeywell Home Smart Thermostat

New! Honeywell Home Smart Thermostat, Conventional/Heat Pump Compatibility, WiFi Thermostat for Home, X2S, Gray

The New! Honeywell Home Smart Thermostat is ideal for homeowners looking to upgrade their heating and cooling systems with a smart, energy-efficient solution. It is perfect for those who want seamless integration with conventional and heat pump systems, along with the convenience of WiFi connectivity for remote control and energy management. If you value precise temperature control and modern design, this thermostat is an excellent choice.

Pros:

  • Compatible with both conventional and heat pump HVAC systems
  • WiFi connectivity allows for remote control via smartphone app
  • Sleek design with grey buttons that blend into modern home décor
  • Energy-saving features help reduce utility bills
  • Manufactured by Resideo, a trusted brand in home automation

Cons:

  • Dimensions may be larger than some compact thermostats (Height: 6.0″, Width: 8.0″, Length: 30.0″)
  • Installation may require professional assistance for some HVAC systems
  • Limited color options, only available with grey buttons

The Honeywell Home Smart Thermostat is designed to enhance your home’s comfort and efficiency by offering precise temperature control compatible with a wide range of HVAC systems. Its WiFi capability allows users to adjust settings remotely, ensuring your home is always at the perfect temperature when you arrive. The intuitive interface with grey buttons complements the thermostat’s modern look while providing easy navigation.

Beyond convenience, this smart thermostat helps users save energy by optimizing heating and cooling schedules, reducing unnecessary usage, and lowering utility costs. With Resideo’s reputation for quality and reliability, homeowners can trust this device to perform consistently and integrate smoothly with existing home automation systems. Overall, it is a valuable upgrade for anyone seeking a smarter, more efficient home climate solution.

To buy this product, click here.

Sensi Lite Smart Thermostat

Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Easy DIY, Works With Alexa, Energy Star Certified, ST25, Most Systems C-Wire Not Required, Except On Heat/Cool Only and Heat Pump System

The Sensi Lite Smart Thermostat is ideal for homeowners and renters looking to upgrade to a smart, energy-efficient climate control solution without the hassle of complex installation. This device is perfect for those who want a programmable, Wi-Fi enabled thermostat that offers compatibility with most HVAC systems and voice control via Alexa, all while prioritizing data privacy. If you seek an easy DIY installation and value Energy Star certification, this thermostat is a great choice.

Pros:

  • Easy DIY installation with no C-wire needed for most systems
  • Works seamlessly with Alexa for hands-free control
  • Energy Star certified for energy efficiency and cost savings
  • Programmable scheduling to customize heating and cooling
  • Strong data privacy measures to protect user information
  • Compact and sleek black design that fits most decor

Cons:

  • C-wire required for heat/cool only and heat pump systems
  • Lacks some advanced features found in higher-end models
  • Limited display size compared to other smart thermostats

The Sensi Lite Smart Thermostat offers a user-friendly experience with its straightforward setup and intuitive interface. Thanks to its Wi-Fi connectivity, users can control their home temperature remotely through the smartphone app or voice commands using Alexa. This not only provides convenience but also helps maintain optimal comfort while reducing energy consumption. The programmable features allow users to create customized schedules that fit their lifestyle, ensuring the HVAC system runs only when needed.

Additionally, the thermostat’s Energy Star certification guarantees energy efficiency, which translates to potential savings on utility bills. Emerson’s emphasis on data privacy ensures that personal information remains secure, a key concern for many smart device users today. The compact size and sleek black color make it a subtle yet modern addition to any home environment. Overall, the Sensi Lite Smart Thermostat balances performance, ease of use, and energy savings, making it an excellent choice for those seeking smart home comfort without complexity.

To buy this product, click here.

Vine Thermostat For Home

The Vine Thermostat for Home is ideal for homeowners and renters who want to upgrade their heating and cooling systems with a smart, energy-efficient solution. If you are looking for a user-friendly thermostat that offers precise temperature control, compatibility with popular voice assistants, and programmable scheduling to save on energy bills, this device is perfect for you. It’s especially suited for individuals comfortable with smart home technology and those who have a C-Wire setup available.

Pros:

  • Touchscreen Color Display provides an intuitive and visually appealing interface.
  • WiFi Smart Thermostat allows remote control via smartphone and integration with Alexa and Google Assistant.
  • 7-day/8-period programmable schedule enables customized temperature settings for each day to maximize comfort and energy savings.
  • Energy-saving features help reduce utility bills by optimizing heating and cooling cycles.
  • Compact dimensions (3.54″ x 3.54″ x 0.98″) and lightweight design (0.55 pounds) make installation easy and unobtrusive.

Cons:

  • C-Wire Required, which may complicate installation for some users without existing wiring.
  • Limited to compatibility with specific HVAC systems that support smart thermostats.
  • Screen size of 2.8″ might feel small for users who prefer larger displays.

The Vine Thermostat features a bright and responsive touchscreen color display that enhances user interaction, making temperature adjustments straightforward. Its compatibility with Alexa and Google Assistant means you can control your home climate hands-free, offering added convenience and seamless integration into your smart home ecosystem. The programmable scheduling function supports up to eight periods per day for seven days a week, allowing users to tailor their heating and cooling patterns to their daily routines, thus avoiding unnecessary energy consumption when no one is home.

Beyond convenience, the thermostat’s energy-saving capabilities are designed to help reduce your monthly utility bills by maintaining optimal temperature settings intelligently. The compact and sleek design ensures it blends well with most home interiors without occupying much space. However, potential buyers should note the requirement of a C-Wire for installation, which might require professional assistance if your current setup lacks this wiring. Overall, the Vine Thermostat combines functionality, smart technology, and energy efficiency, making it a valuable addition for any modern household looking to enhance comfort and save energy.

To buy this product, click here.

Honeywell Home Wi-fi 7-day Programmable Thermostat

Honeywell Home Wi-Fi 7-Day Programmable Thermostat, RTH6580WF

The Honeywell Home Wi-Fi 7-Day Programmable Thermostat, RTH6580WF is an ideal choice for homeowners who want to optimize their heating and cooling schedules with ease. This product is perfect for individuals looking to save on energy bills while maintaining comfort, especially those who appreciate smart home integration and remote control capabilities.

Pros:

  • Easy 7-day programmable scheduling for personalized comfort
  • Wi-Fi connectivity enables remote control via smartphone app
  • Compact and sleek white design fits well with most home décors
  • Simple installation compatible with most heating and cooling systems
  • Energy-saving features help reduce utility costs

Cons:

  • Limited advanced smart home integration compared to newer models
  • Display size might be small for some users
  • Requires Wi-Fi network for remote access features

The Honeywell Home Wi-Fi 7-Day Programmable Thermostat offers a streamlined way to control your home’s temperature settings throughout the week. Its user-friendly interface allows easy programming of daily schedules, ensuring your heating and cooling system runs only when needed, which translates to significant energy savings. The Wi-Fi functionality gives users the convenience of adjusting settings remotely using the Honeywell Home app, providing comfort and control from anywhere.

Measuring just 3.5 inches in height, 1.5 inches in width, and 5.875 inches in length, and weighing only 1.2 pounds, this thermostat is compact and unobtrusive. The classic white finish complements any room style, making it a subtle yet effective addition to your home. Its compatibility with most HVAC systems simplifies installation, allowing users to upgrade their home’s climate control without professional help. Overall, this thermostat balances smart features with practical design to enhance home comfort and efficiency.

To buy this product, click here.

Honeywell Home Rth9585wf1004 Wi-fi Smart Color Thermostat

Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready

The Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat is ideal for homeowners and tech enthusiasts looking to enhance their home’s heating and cooling system with smart technology. If you want a customizable, energy-efficient thermostat that integrates seamlessly with modern smart home devices like Alexa, this product is a perfect fit. It’s especially beneficial for those who desire precise control over their home environment through a user-friendly touchscreen interface and programmable scheduling.

Pros:

  • Wi-Fi connectivity allows remote control via smartphone apps.
  • 7-day programmable schedule helps optimize energy usage and comfort.
  • Bright, intuitive touch screen with customizable color options.
  • Energy Star certified for energy efficiency and savings.
  • Alexa Ready for convenient voice control integration.
  • Compact design with sleek gray color fits most home decors.

Cons:

  • Initial setup may be complex for users unfamiliar with smart devices.
  • Requires a stable Wi-Fi connection for full functionality.
  • Touch screen sensitivity may require occasional recalibration.

The Honeywell Home RTH9585WF1004 boasts a sleek and compact design measuring just 0.88 inches in height, 4.5 inches in width, and 3.5 inches in length, making it an unobtrusive addition to any room. Its vivid color touchscreen not only enhances user interaction but also allows for easy customization to match your home’s style. The device’s Wi-Fi capability means you can effortlessly manage your thermostat from anywhere using your smartphone, offering unparalleled convenience and control.

With its 7-day programmable feature, this thermostat enables users to create tailored heating and cooling schedules that align with their lifestyle, helping reduce energy waste and lower utility bills. Being Energy Star certified, it guarantees efficient performance without compromising comfort. Furthermore, its compatibility with Alexa allows for hands-free operation, making it a smart and practical choice for modern smart homes seeking both functionality and energy savings.

To buy this product, click here.

Provirtec Smart Thermostat For Home

Provirtec Smart Thermostat for Home with Room Sensor, 7 Days Programmable, Energy Saving WiFi Thermostats for House,APP & Touchscreen Control, C Wire Required, 3.95 Inch Large Screen

The Provirtec Smart Thermostat for Home with Room Sensor is ideal for homeowners and renters who want to optimize their home’s heating and cooling efficiently. It is perfect for those looking to reduce energy consumption while maintaining comfort, especially tech-savvy users who appreciate programmable schedules and remote control via an app. Users with existing HVAC systems that support a C Wire connection will benefit most from this thermostat’s advanced features.

Pros:

  • 7 Days Programmable scheduling for personalized temperature control
  • Energy-saving WiFi connectivity allowing remote control via smartphone app
  • Large 3.95 Inch touchscreen display for easy and intuitive navigation
  • Includes a room sensor to better monitor and regulate temperature in different areas
  • Sleek black design that fits modern home aesthetics

Cons:

  • Requires a C Wire for installation, which may limit compatibility with older HVAC systems
  • Setup and connectivity might be challenging for users unfamiliar with smart home technology

The Provirtec Smart Thermostat features a user-friendly 3.95-inch touchscreen display that makes adjusting settings straightforward and convenient. Its 7-day programmable function allows users to tailor heating and cooling schedules according to their daily routines, resulting in significant energy savings. Integration with a dedicated smartphone app means users can control the thermostat remotely, ensuring their home is always at the perfect temperature upon arrival.

Additionally, the included room sensor enhances temperature accuracy by monitoring different zones, which helps to avoid overheating or cooling unoccupied spaces. This feature not only boosts comfort but also contributes to reducing utility bills. The thermostat’s sleek black design and compact dimensions ensure it complements any home decor without being intrusive. Overall, the Provirtec Smart Thermostat is a practical and efficient solution for modern homes aiming to balance comfort with energy efficiency.

To buy this product, click here.

Frequently Asked Questions

What Features Do Smart Thermostats Under $100 Offer?

Smart thermostats under $100 offer Wi-Fi connectivity, Alexa compatibility, energy-saving modes, and easy DIY installation. Many models include touchscreen displays and programmable schedules to control home temperature efficiently.

Do These Thermostats Require A C-wire For Installation?

Most smart thermostats under $100 require a C-wire for continuous power. However, some models like Sensi Lite work without a C-wire on certain systems, simplifying installation for many users.

Can These Thermostats Save Money On Energy Bills?

Yes, smart thermostats under $100 help save money by optimizing heating and cooling schedules. ENERGY STAR-certified models reduce energy waste and lower utility costs effectively.

Are These Thermostats Compatible With Alexa And Google Assistant?

Most smart thermostats under $100 work seamlessly with Alexa and Google Assistant. This integration allows voice control and remote management via smartphone apps.

How Easy Is The Diy Installation Process?

DIY installation is straightforward with most models. Clear instructions and compatibility with common HVAC systems make setup simple for homeowners without professional help.

Which Smart Thermostat Offers The Best Value For Under $100?

The Amazon Smart Thermostat and Honeywell Home models provide excellent value. They combine energy efficiency, smart features, and easy installation at an affordable price point.

Conclusion

Choosing a smart thermostat under $100 can be a wise investment for your home. These devices offer modern features while being budget-friendly. The Amazon Smart Thermostat and Google Nest Thermostat stand out for their seamless integration with Alexa. The Emerson Sensi Touch provides a vibrant touchscreen for easy navigation.

Honeywell offers models that are both programmable and Wi-Fi enabled, enhancing energy efficiency. For those prioritizing privacy, the Sensi Lite Smart Thermostat is an excellent choice. Meanwhile, the Vine Thermostat’s colorful display and compatibility with both Alexa and Google Assistant add convenience.

Provirtec’s model includes a room sensor, ensuring optimal comfort. Each of these options is designed to help you save energy and cut costs. They are easy to install and use, making them perfect for non-experts. Consider your needs and home setup to find the right fit.

A smarter home climate is just a smart choice away.

Leave a Comment