Best Smart Thermostats to Buy in September 2025
ecobee Smart Thermostat Essential - Energy Star Certified programmable Wi-Fi Thermostat - Works with Siri, Alexa, and Google Assistant
- SAVE 23% YEARLY ON HEATING/COOLING WITH SMART ENERGY ADJUSTMENTS.
- EASY DIY INSTALL; COMPATIBLE WITH 85% OF HVAC SYSTEMS EFFORTLESSLY.
- CONTROL WITH TOUCHSCREEN OR APP; ENJOY FREE SOFTWARE UPGRADES!
Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required
- SMART UPGRADE: EASILY SWITCH TO ENERGY-EFFICIENT CONTROL AT HOME.
- SAVE MONEY: ACCESS LOCAL ENERGY REBATES TO LOWER YOUR COSTS.
- AUTOMATIC CONTROL: ALEXA ADJUSTS TEMPS FOR COMFORT AND SAVINGS EFFORTLESSLY.
Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Snow
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SAVE ENERGY AUTOMATICALLY: ADJUSTS TEMP WHEN YOU LEAVE HOME.
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REMOTE CONTROL: MANAGE SETTINGS FROM ANYWHERE VIA SMARTPHONE OR TABLET.
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HVAC MONITORING: ALERTS YOU TO ISSUES FOR EASY HOME MAINTENANCE.
ecobee Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home
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SAVE UP TO 26% YEARLY ON HEATING AND COOLING COSTS EFFORTLESSLY!
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ADJUSTS TEMPERATURES AUTOMATICALLY FOR ULTIMATE COMFORT ANYTIME.
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CONTROL FROM ANYWHERE WITH YOUR SMARTPHONE, TABLET, OR SMARTWATCH.
ecobee Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant
- SAVE UP TO 26% ANNUALLY ON HEATING AND COOLING COSTS WITH ENERGY STAR.
- SMARTSENSOR OPTIMIZES COMFORT WHILE REDUCING HOT AND COLD SPOTS.
- BUILT-IN SECURITY ALERTS, AIR QUALITY MONITOR, AND SMART SPEAKER SUPPORT.
Google Nest Learning Thermostat - 3rd Gen (2015) - Programmable Smart Thermostat for Home - Works with Alexa - Stainless Steel
- AUTO-SCHEDULE: NO PROGRAMMING NEEDED; LEARNS YOUR PREFERENCES AUTOMATICALLY.
- SAVE ENERGY: HOME/AWAY ASSIST OPTIMIZES HEATING/COOLING WHEN YOU'RE AWAY.
- REMOTE CONTROL: ADJUST YOUR THERMOSTAT ANYTIME USING THE NEST APP.
Smart thermostats are innovative devices that allow you to control your home's temperature remotely, adjusting settings based on your preferences and schedules. These devices claim to not only provide convenience but also save on energy costs. The question then arises: How much can smart thermostats actually save?
When it comes to energy savings, smart thermostats can make a difference. By learning your heating and cooling patterns, these thermostats can optimize temperature settings for efficiency. They may automatically adjust when you're away from home, reducing energy consumption during those times. Additionally, some models utilize geofencing technology to detect when you're nearing home, so they can start heating or cooling in advance.
Estimates suggest that smart thermostats can save homeowners an average of 10-15% on heating costs and 15% on cooling costs annually. However, savings can vary based on factors such as local climate, insulation quality, and individual user behavior. Some users have reported even higher savings, particularly if they actively engage with the thermostat's features and make use of energy-saving settings.
The potential for savings is not limited to reducing energy consumption during your absence; smart thermostats also offer features like temperature scheduling and fine-tuned control, allowing you to set preferences for different times of the day based on your routines. This capability further improves energy efficiency and ultimately saves costs.
However, it's important to note that the extent of energy savings largely depends on user behavior and engagement. Making use of the device's capabilities, actively programming schedules, and optimizing settings can lead to higher savings. Regularly monitoring energy use through the smart thermostat's accompanying app can also help identify patterns and make necessary adjustments.
While smart thermostats have the potential to save you money, it's important to consider other factors as well. The upfront cost of purchasing and installing a smart thermostat, although becoming more affordable, should be taken into account. Additionally, if you live in a small apartment or if your home's insulation is already efficient, the savings may not be as significant.
In conclusion, smart thermostats can indeed save homeowners money on their energy bills. By optimizing temperature settings, learning user behavior, and providing energy-efficient features, these devices can potentially reduce annual heating and cooling costs by an estimated 10-15%. However, individual savings may vary depending on factors such as climate, insulation, and user engagement with the thermostat's features.
Are there any limitations to smart thermostat energy savings in older homes?
Yes, there can be limitations to smart thermostat energy savings in older homes. Some potential limitations include:
- Inadequate insulation: Older homes may have poor insulation, which can result in energy leaks. While a smart thermostat can help regulate temperature efficiently, it may not be able to compensate for the lack of insulation.
- Inefficient HVAC systems: Older homes may have outdated or inefficient heating, ventilation, and air conditioning (HVAC) systems. Smart thermostats can optimize the usage of these systems, but if they are already inefficient, the overall energy savings may be limited.
- Complex HVAC wiring: Older homes may have complex or incompatible HVAC wiring systems that may require professional assistance for installation and setup of a smart thermostat. This could add additional costs and complexity.
- Lack of compatibility: Certain smart thermostat models may not be compatible with older HVAC systems or may require additional accessories or wiring modifications. Ensuring compatibility between the two is important for optimal energy savings.
- Limited control options: Depending on the features and capabilities of the smart thermostat, older homes may not have all the necessary components or systems in place to take full advantage of the thermostat's energy-saving features, such as zoning or remotely controlling auxiliary devices like fans or humidifiers.
Overall, while smart thermostats can still provide energy savings in older homes, the extent of the savings may be influenced by these limitations. It is important to consider the specific characteristics of the home and consult with professionals to determine the most effective energy-saving strategies.
Do smart thermostats help to reduce greenhouse gas emissions?
Yes, smart thermostats help to reduce greenhouse gas emissions. These devices have features that allow users to control and optimize their home's heating and cooling systems more efficiently. They can learn and adapt to the user's schedule and preferences, adjust temperatures based on occupancy, and remotely control settings through smartphone apps.
These features enable users to better manage their energy consumption, leading to reduced energy waste and greenhouse gas emissions. By using a smart thermostat to regulate heating and cooling only when needed and at optimal temperatures, unnecessary energy usage can be minimized. The increased efficiency in managing energy consumption directly translates to reduced overall greenhouse gas emissions associated with home energy use.
Can smart thermostats save on cooling costs as well as heating costs?
Yes, smart thermostats can save on both cooling and heating costs. These devices are designed to optimize energy usage by automatically adjusting the temperature settings based on various factors such as occupancy, weather conditions, and user preferences.
During the cooling season, smart thermostats can help reduce energy consumption by allowing you to schedule and control the temperature settings of your air conditioning system more efficiently. For instance, you can set the thermostat to increase the temperature when nobody is at home or to lower it during the night when temperatures tend to be cooler. This avoids unnecessary cooling and helps conserve energy.
Moreover, smart thermostats often come with features such as geofencing, which uses the location of your smartphone to determine whether you are at home or away. This allows the thermostat to adjust the temperature settings accordingly, ensuring that your cooling system is not running unnecessarily when you are not home.
Additionally, many smart thermostats provide energy usage reports and recommendations, allowing you to monitor your cooling usage and make informed decisions to further enhance energy efficiency.
In summary, by providing greater control and automation, along with features like scheduling, geofencing, and energy monitoring, smart thermostats can help save on cooling costs as well as heating costs.
Are there any energy-saving features unique to smart thermostats?
Yes, smart thermostats offer several energy-saving features that are unique to their technology. Some of these features include:
- Learning capabilities: Smart thermostats have the ability to learn your daily routines and adjust temperature settings accordingly. They can detect when you leave the house and automatically lower the temperature to save energy. Similarly, they learn when you typically return and adjust the temperature to a comfortable level before you arrive.
- Geofencing: Many smart thermostats use geofencing technology to track your location through your smartphone. They can sense when you are leaving or approaching home and adjust the temperature accordingly. This helps prevent unnecessary heating or cooling of empty spaces and ensures comfort when you arrive.
- Remote control: Smart thermostats can be controlled remotely through smartphone apps. This allows you to monitor and adjust temperature settings from anywhere, enabling you to make changes based on your schedule. For example, if you forgot to adjust the thermostat before leaving home, you can remotely lower or raise the temperature to save energy.
- Energy usage reports: Smart thermostats provide detailed energy usage reports, letting you track how much energy is being consumed by your HVAC system. They also offer insights and recommendations on how to optimize energy efficiency, such as suggesting temperature adjustments or scheduling changes.
- Integration with other smart devices: Many smart thermostats can connect and communicate with other smart home devices like occupancy sensors, smart lighting, or smart blinds. This integration allows for a coordinated effort in energy-saving strategies. For instance, the thermostat can adjust temperature settings based on occupancy detected by the sensors, or it can coordinate with smart blinds to utilize natural sunlight for heating or cooling purposes.
These energy-saving features make smart thermostats an effective tool for optimizing energy consumption and reducing utility costs.