Cheap Smart Thermostats Online: Best Affordable WiFi Thermostats for Home

User avatar placeholder
Written by fixonelectronics

November 12, 2025

Finding cheap smart thermostats online helps save energy and cut utility bills. These devices control home temperature easily and connect to voice assistants.

Smart thermostats offer comfort and convenience by adjusting heating and cooling automatically. Many models work with Alexa, Google Assistant, or Siri for voice control. Some need a C-wire for power, while others do not, making installation simpler. Energy Star certified options save money and reduce environmental impact.

Popular choices include Amazon Smart Thermostat, ecobee models, Google Nest, Emerson Sensi, and Honeywell Home thermostats. These devices come with features like programmable schedules, touchscreens, and air quality monitoring. Buying a budget-friendly smart thermostat online lets you upgrade your home without spending too much. It’s a smart step toward energy efficiency and easier temperature management.

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 who want to save money and energy while enjoying the convenience of modern smart home technology. If you are looking for an affordable and efficient way to control your home’s temperature remotely and integrate it with your existing Alexa or Ring devices, this thermostat is a great choice. It is especially suitable for those who have a C-wire setup, ensuring continuous power supply for optimal performance.

Pros:

  • Easy integration with Alexa and Ring devices for voice and app control
  • Helps save energy and reduce utility bills through smart scheduling and automation
  • Sleek, compact design in white that fits well in any home decor
  • Lightweight and unobtrusive with dimensions of 0.84 x 3.56 x 3.56 inches

Cons:

  • Requires a C-wire for installation, which may not be present in all homes
  • Limited to compatibility with Alexa and Ring ecosystems, reducing flexibility
  • Basic design may lack advanced features found in some higher-end smart thermostats

The Amazon Smart Thermostat boasts a user-friendly interface that allows you to easily adjust your home’s temperature through voice commands or the Amazon Alexa app. This seamless integration means you can control your thermostat hands-free, making it perfect for busy households or those who prefer smart home automation. The device’s compact size and clean white color ensure it blends effortlessly into your living space without being intrusive.

Beyond convenience, the thermostat is designed to help you reduce energy consumption by enabling customized schedules and learning your preferred temperatures over time. This not only contributes to a greener environment but also helps lower your monthly energy bills. However, since the device requires a C-wire, it is essential to verify your home’s wiring compatibility before purchase to ensure smooth installation and operation.

To buy this product, click here.

Ecobee Smart Thermostat Essential

ecobee Smart Thermostat Essential - Energy Star Certified programmable Wi-Fi Thermostat - Works with Siri, Alexa, and Google Assistant

The ecobee Smart Thermostat Essential is ideal for homeowners and renters who want an efficient and easy-to-use programmable Wi-Fi thermostat that seamlessly integrates with popular smart home assistants. If you’re looking to reduce your energy bills while enjoying convenient voice control via Siri, Alexa, or Google Assistant, this device is a perfect choice. It suits individuals who value energy savings and smart home compatibility without complicated setup.

Pros:

  • Energy Star Certified for reliable energy efficiency
  • Compatible with Siri, Alexa, and Google Assistant for hands-free control
  • Compact design (3.62 x 3.62 x 0.91 inches) fits easily in any space
  • Simple, user-friendly interface for easy programming and adjustments
  • Wi-Fi enabled for remote access and smart scheduling

Cons:

  • Lacks some advanced features found in higher-end ecobee models
  • Requires a stable Wi-Fi connection for full functionality
  • No built-in room sensors included

The ecobee Smart Thermostat Essential offers a streamlined and effective way to manage your home’s temperature. Its Energy Star certification ensures that it meets high standards for energy efficiency, helping users save on utility bills without sacrificing comfort. The thermostat’s compatibility with major voice assistants like Siri, Alexa, and Google Assistant means you can easily control your home’s climate using simple voice commands, enhancing convenience and accessibility.

With its compact and sleek white design, the thermostat fits unobtrusively into any room. The device’s Wi-Fi capability allows for remote adjustments through a smartphone app, so users can maintain an optimal temperature from anywhere. This feature is especially beneficial for busy individuals or families who want to ensure a comfortable environment when arriving home, while also minimizing unnecessary energy use during absences. Overall, the ecobee Smart Thermostat Essential combines smart technology with energy savings in an affordable and user-friendly package.

To buy this product, click here.

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 an ideal choice for homeowners and renters who want to optimize their home’s heating and cooling efficiently while saving on energy bills. This product is perfect for tech-savvy individuals who prefer a DIY install and are looking for a device that seamlessly integrates with their smart home ecosystem, especially those who use Alexa. Note that a C-wire is required for proper installation, making it more suitable for homes with existing wiring setups.

Pros:

  • ENERGY STAR certified for energy efficiency and cost savings.
  • Easy DIY installation that doesn’t require professional help.
  • Compatible with Alexa for convenient voice control.
  • Compact and sleek white design measuring 3.56 x 3.56 x 0.84 inches.
  • Lightweight at just 0.24 pounds, making it easy to handle during installation.

Cons:

  • Requires a C-wire, which may not be available in all homes.
  • Limited to Amazon ecosystem compatibility, which might restrict some users.
  • Does not include a built-in display for advanced manual controls.

The Amazon Smart Thermostat boasts a sleek and compact design that fits easily into any home décor without being obtrusive. Its ENERGY STAR certification ensures that it meets strict energy efficiency guidelines, helping users reduce their utility bills while minimizing environmental impact. The device’s compatibility with Alexa enables effortless voice control, allowing users to adjust the temperature without lifting a finger, which adds a layer of convenience and modernity to everyday living.

Installation is straightforward thanks to its DIY-friendly setup, making it accessible to those who prefer to avoid the cost and hassle of professional installation. However, users must ensure they have a C-wire in place, as this is critical for powering the thermostat consistently. Overall, the Amazon Smart Thermostat combines smart technology with energy-saving features, making it a valuable addition for anyone looking to upgrade their home climate control system efficiently.

To buy this product, click here.

Google Nest Thermostat

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

The Google Nest Thermostat in Snow is ideal for homeowners and renters who want to enhance their home’s energy efficiency and comfort with a sleek, user-friendly device. If you are looking to easily control your home’s temperature remotely or want a programmable thermostat that adapts to your lifestyle, this smart thermostat is designed for you. It suits tech-savvy individuals as well as those new to smart home devices seeking convenience and savings on energy bills.

Pros:

  • Programmable Wifi Thermostat allows remote control via smartphone.
  • Compact and stylish design with a Snow color finish that fits modern decor.
  • Easy installation with clear dimensions (Height: 1.07 inches, Width & Length: 3.3 inches) and lightweight (0.62 pounds).
  • Energy-saving features that help reduce heating and cooling costs.
  • Integrates seamlessly with other Google smart home products for enhanced automation.

Cons:

  • Requires a stable WiFi connection to utilize full smart features.
  • Some advanced features may require a Google account and app setup.
  • Limited compatibility with certain older HVAC systems.

The Google Nest Thermostat offers a range of smart features that make managing your home’s climate effortless. Thanks to its programmable wifi capabilities, users can easily adjust settings from anywhere using the Google Home app. This means you can ensure your home is always at the perfect temperature when you arrive, without wasting energy while you’re away. The device’s compact and elegant design in Snow color blends seamlessly into any room aesthetic.

Additionally, the thermostat supports energy-saving schedules that learn your preferences over time, helping to reduce utility bills without sacrificing comfort. Its compatibility with other Google smart devices allows for integrated home automation, such as adjusting temperature based on your daily routine or voice commands via Google Assistant. Overall, this smart thermostat offers convenience, style, and efficiency for modern homes.

To buy this product, click here.

Ecobee Smart Thermostat Enhanced

ecobee Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home

The ecobee Smart Thermostat Enhanced is ideal for homeowners and tech enthusiasts looking to optimize their home’s energy efficiency and comfort. If you want a programmable WiFi thermostat that seamlessly integrates with popular smart home assistants like Siri, Alexa, and Google Assistant, this device is perfect for you. It suits those who appreciate convenience, remote control capabilities, and want to lower their energy bills without sacrificing comfort.

Pros:

  • Easy integration with multiple smart home platforms including Siri, Alexa, and Google Assistant
  • Energy Star Certified for superior energy efficiency and cost savings
  • Compact and sleek design with dimensions of 4.09 x 4.09 x 0.94 inches, making it unobtrusive
  • Programmable features allowing customized temperature schedules to suit individual lifestyle
  • Remote control via WiFi enables temperature adjustments from anywhere

Cons:

  • Initial setup may be complex for users unfamiliar with smart home devices
  • Higher price point compared to traditional thermostats
  • Requires stable WiFi connection for optimal performance

The ecobee Smart Thermostat Enhanced offers advanced features that make home temperature management effortless and efficient. Its programmable WiFi capability allows users to set customized schedules that align with their daily routines, reducing energy waste while maintaining comfort. The thermostat’s compatibility with popular voice assistants like Siri, Alexa, and Google Assistant provides hands-free control, enhancing convenience and accessibility. Additionally, its sleek black design fits seamlessly into any modern home décor.

Beyond convenience, the thermostat’s Energy Star certification ensures that it meets strict energy efficiency guidelines, helping users reduce their carbon footprint and save on utility bills. The compact size of the device, weighing just over one pound and measuring 4.09 inches in height and width, allows for easy installation without occupying much space. Overall, this smart thermostat is a smart investment for anyone looking to upgrade their home with cutting-edge technology that delivers both comfort and savings.

To buy this product, click here.

Ecobee Smart Thermostat Premium

ecobee Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant

The ecobee Smart Thermostat Premium with Smart Sensor and Air Quality Monitor is ideal for homeowners and tech enthusiasts who want to enhance their home’s climate control while maintaining excellent air quality. If you are looking for a programmable WiFi thermostat that integrates seamlessly with smart home systems like Siri, Alexa, and Google Assistant, this device is perfect for you. It is especially suitable for those who prioritize energy efficiency and comfort in their living spaces.

Pros:

  • Advanced Smart Sensor technology for precise temperature control in different rooms
  • Built-in Air Quality Monitor to track and improve indoor air conditions
  • Works with major voice assistants like Siri, Alexa, and Google Assistant for hands-free control
  • Easy-to-use programmable WiFi thermostat with remote access
  • Sleek and compact design in black with a small footprint (4.09 x 4.09 x 1.02 inches)

Cons:

  • Higher price point compared to basic thermostats
  • Some advanced features may require a learning curve for new users
  • Requires a stable WiFi connection for optimal performance

The ecobee Smart Thermostat Premium stands out due to its integration of a Smart Sensor that detects occupancy and temperature variations across different rooms. This feature ensures that your home is heated or cooled efficiently, focusing on occupied areas to maximize comfort while reducing energy waste. Additionally, the device includes an Air Quality Monitor that continuously tracks indoor air quality, alerting users to potential issues such as high levels of pollutants or humidity, which helps maintain a healthier living environment.

Beyond its smart climate control capabilities, this thermostat offers seamless compatibility with popular voice assistants like Siri, Alexa, and Google Assistant. This allows users to control their home temperature effortlessly using voice commands or through smartphone apps, whether at home or remotely. The device’s compact and modern design fits well into any home decor, while the programmable WiFi function provides convenience and flexibility, enabling users to customize schedules and save on energy bills.

To buy this product, click here.

Google Nest Learning Thermostat

Google Nest Learning Thermostat - 3rd Gen (2015) - Programmable Smart Thermostat for Home - Works with Alexa - Stainless Steel

The Google Nest Learning Thermostat – 3rd Gen is ideal for homeowners and tech enthusiasts who want to optimize their home’s heating and cooling systems for both comfort and energy efficiency. If you are looking for a programmable smart thermostat that seamlessly integrates with your smart home ecosystem, particularly if you use Alexa for voice control, this device is a perfect choice. Its sleek stainless steel design also appeals to those who appreciate modern, stylish home gadgets.

Pros:

  • Learns your schedule to automatically adjust temperature for energy savings
  • Compatible with Alexa and other smart home devices for convenient voice control
  • Sleek and durable stainless steel design fits any home decor
  • Easy-to-use interface with a clear display and intuitive controls
  • Provides detailed energy usage reports to help reduce utility bills

Cons:

  • Higher upfront cost compared to traditional thermostats
  • Requires Wi-Fi connection for full functionality
  • Installation may require professional assistance for some HVAC systems

The Google Nest Learning Thermostat – 3rd Gen stands out with its ability to learn your daily routine and adjust the temperature automatically, which means you don’t have to constantly program it yourself. This feature not only enhances comfort by having your home at the perfect temperature when you need it but also significantly reduces energy consumption and utility costs. The device’s compatibility with Alexa allows users to control their thermostat hands-free, making it a convenient addition to any smart home setup.

Featuring a compact design with dimensions of 1.21 inches in height and 3.3 inches in both width and length, this thermostat fits effortlessly on your wall without being intrusive. Its durable stainless steel finish adds a touch of elegance to your home while ensuring longevity. Users also benefit from the thermostat’s energy usage reports, which provide valuable insights to further optimize energy savings and promote environmentally friendly living. Overall, the Google Nest Learning Thermostat offers a blend of advanced technology, user-friendly features, and stylish design that caters to modern homeowners seeking comfort and efficiency.

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 their heating and cooling systems with a user-friendly, energy-efficient solution. This device is perfect for those who want to enjoy smart home convenience without complicated installation, as it supports most HVAC systems without requiring a C-wire, except for specific heat/cool only and heat pump setups.

Pros:

  • Easy DIY installation suitable for most systems without a C-wire
  • Wi-Fi enabled for remote control via smartphone or voice commands
  • Works seamlessly with Alexa for hands-free operation
  • Energy Star Certified to help reduce energy consumption and save on utility bills
  • Strong data privacy features to protect user information
  • Compact design with dimensions of 3.13 x 5.07 x 0.88 inches and lightweight at 0.3 pounds

Cons:

  • Requires a C-wire for heat/cool only and heat pump systems
  • Limited color options with only black available
  • May not support some older or highly specialized HVAC systems

The Sensi Lite Smart Thermostat offers a streamlined experience for controlling your home’s temperature with ease. Its programmable features allow users to set schedules that align with their daily routines, optimizing comfort while minimizing unnecessary energy use. Integration with Wi-Fi and smart home platforms like Alexa means you can adjust settings from anywhere, enhancing convenience and helping maintain an ideal climate effortlessly.

Designed by Emerson, this thermostat balances advanced technology with simplicity. The emphasis on data privacy ensures that users’ personal information remains secure, a crucial feature in today’s connected world. Additionally, its Energy Star certification highlights the thermostat’s commitment to sustainability, making it a smart investment for environmentally conscious consumers looking to reduce their carbon footprint and energy bills.

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 upgrade their home heating and cooling system with a user-friendly, energy-efficient solution. Those who want seamless integration with smart home devices like Alexa and prioritize easy control through a vibrant touchscreen color display will find this thermostat particularly beneficial.

Pros:

  • Energy Star Certified for energy savings and environmental friendliness
  • Intuitive touchscreen color display providing easy navigation and control
  • Compatible with Alexa for convenient voice control
  • Wi-Fi enabled for remote access via smartphone app
  • Sleek and compact design (5.625″ x 3.4″ x 1.17″) fits most home decors

Cons:

  • C-wire required, which might complicate installation in older homes
  • Black color option may not suit all interior styles
  • Initial setup may require technical knowledge for integration with smart home systems

The Emerson Sensi Touch thermostat offers a highly responsive touchscreen color display, making temperature adjustments simple and visually appealing. Its sleek black design complements modern home aesthetics while providing a compact footprint. The thermostat’s Wi-Fi connectivity allows users to control their home climate from anywhere using a smartphone, enhancing convenience and comfort.

Moreover, this device’s compatibility with Alexa expands hands-free control capabilities, enabling voice commands to adjust settings effortlessly. Being Energy Star Certified, it helps reduce utility bills by optimizing energy usage without sacrificing comfort. However, the requirement of a C-wire means installation may need professional assistance, especially in older homes lacking this wiring.

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-savvy individuals looking to enhance their home’s heating and cooling efficiency. This device is perfect for those who want a customizable, easy-to-use, and energy-efficient thermostat that integrates seamlessly with smart home systems like Alexa. If you value convenience, energy savings, and modern design, this thermostat is a great investment.

Pros:

  • 7 Day Programmable scheduling allows personalized temperature control throughout the week.
  • Wi-Fi enabled for remote access and control via smartphone apps.
  • Touch Screen interface provides an intuitive and user-friendly experience.
  • Energy Star certified ensures energy efficiency and cost savings.
  • Alexa Ready for seamless voice control integration.
  • Compact design with sleek gray color fits modern home aesthetics.

Cons:

  • Initial setup may be complex for users unfamiliar with smart home devices.
  • Requires a stable Wi-Fi connection for full functionality.
  • Some advanced features may require a learning curve for less tech-savvy users.

The Honeywell Home RTH9585WF1004 thermostat boasts a vibrant color touch screen that enhances user interaction, making temperature adjustments simple and visually clear. Its 7-day programmable feature allows users to customize heating and cooling schedules to match their lifestyle, ensuring comfort while reducing unnecessary energy consumption. Additionally, the device’s compact dimensions (Height: 0.88 inches, Width: 4.5 inches, Length: 3.5 inches) allow it to blend seamlessly into any room without being obtrusive.

Connectivity is a standout feature, as the thermostat’s Wi-Fi capabilities enable remote monitoring and adjustments from anywhere using a smartphone. Being Energy Star certified, it helps users save on energy bills while reducing their carbon footprint. The integration with Alexa further enhances convenience, providing hands-free control through voice commands. Overall, this thermostat combines smart technology, energy efficiency, and ease of use to create a comfortable and sustainable home environment.

To buy this product, click here.

Frequently Asked Questions

What Are Cheap Smart Thermostats?

Cheap smart thermostats offer energy-saving features at an affordable price. They provide programmable settings and Wi-Fi connectivity. Many are compatible with voice assistants like Alexa, Google Assistant, and Siri. These thermostats are ideal for budget-conscious consumers looking to upgrade their home’s energy efficiency without breaking the bank.

Do Smart Thermostats Save Money?

Yes, smart thermostats can save money by optimizing heating and cooling schedules. They learn your preferences and adjust settings accordingly. This reduces energy waste and lowers utility bills. Many models are Energy Star certified, ensuring they’re designed for energy efficiency.

Proper installation and use can maximize these savings.

Is A C-wire Necessary For Smart Thermostats?

Some smart thermostats require a C-wire for power. However, models like the Sensi Lite can work without it. A C-wire provides continuous power, essential for advanced features. If your system lacks a C-wire, consider models that don’t require one or use a C-wire adapter.

Which Smart Thermostats Work With Alexa?

Many smart thermostats work with Alexa, including Amazon’s own models, ecobee, and Google Nest. Integration allows voice control for convenience. You can adjust temperature settings hands-free. This feature enhances the smart home experience by offering seamless connectivity between devices.

Are Diy Smart Thermostat Installations Easy?

Yes, many smart thermostats are designed for easy DIY installation. They come with step-by-step instructions. Models like ecobee and Amazon’s thermostats provide user-friendly installation guides. Ensure compatibility with your system before starting. DIY installation saves money on professional services and can be completed in a few hours.

Conclusion

Choosing a cheap smart thermostat online can help you save money and energy easily. Many options work with Alexa, Google Assistant, or Siri for simple voice control. Some models, like the Amazon Smart Thermostat and ecobee series, offer easy DIY installation and energy-saving features.

Others, such as the Google Nest Learning Thermostat, learn your habits to keep your home comfortable automatically. Make sure to check if your system needs a C-wire before buying. Features like touchscreen displays, air quality monitoring, and programmable schedules add convenience and comfort.

Buying a certified Energy Star thermostat also means you help reduce energy waste. With many affordable models available, it is simple to find one that fits your needs and budget. A smart thermostat is a smart step toward a cozy, efficient home without spending too much.

Start saving energy and money today with a budget-friendly smart thermostat.

Leave a Comment