Which smart thermostat offers the most energy-saving features?
| Product ⇅ | Price ⇅ | Energy Consumption (watts) ⇅ | Temperature Range (°F / °C) ⇅ | Wi-Fi Connectivity ⇅ | Voice Assistant Compatibility ⇅ | Smartphone App ⇅ | Geofencing ⇅ | Humidity Sensing (%) ⇅ |
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Honeywell Home T9 Smart Thermostat with Sensor
US
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£153.64 ≈ | — | — | ✓ | Amazon Alexa, Google Assistant, Microsoft Cortana, Samsung SmartThings, IFTTT, Apple HomeKit | ✓ | ✓ | Yes |
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The Honeywell Home T9 is an ENERGY STAR certified Wi-Fi thermostat with a touchscreen, smart room sensor, room prioritization, scheduling, geofencing and humidity sensing. It suits homes that want room-by-room comfort control and energy-saving automation through a smartphone app and voice assistants. ★ Ideal forIt suits people seeking the most energy-saving features because it combines ENERGY STAR certification, geofencing, utility rewards, energy reports, smart scheduling and room sensors that can focus heating or cooling where it is needed.
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ecobee Smart Thermostat Enhanced
US
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£124.96 ≈ | 1.6W idle, 2W peak | Desired: 45°F to 92°F; Display: 40°F to 100°F; Operating: 14°F to 122°F | ✓ | Amazon Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings, IFTTT | ✓ | ✓ | Display: 20% to 90% RH; Operating: 5% to 95% RH |
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The ecobee Smart Thermostat Enhanced uses occupancy sensing, humidity adjustment, scheduling, and eco+ features to automate comfort and reduce heating and cooling costs. It suits homeowners who want smartphone control, broad smart-home compatibility, and energy-saving automation without needing a built-in voice assistant. ★ Ideal forIt suits people seeking the most energy-saving features because it is ENERGY STAR certified, can save up to 26% on heating and cooling costs, adjusts temperatures when rooms are unoccupied, preheats or precools before arrival, and uses humidity sensing to optimize comfort.
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ecobee Smart Thermostat Essential
US
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£47.77 ≈ | 3 VA | Desired: 45°F to 120°F; Display: 32°F to 120°F; Operating: 14°F to 122°F | ✓ | Amazon Alexa, Google Assistant, Apple HomeKit, SmartThings and IFTTT | ✓ | — | Display: 20% to 90% RH; Operating: 5% to 95% RH |
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The ecobee Smart Thermostat Essential is an ENERGY STAR certified thermostat with built-in temperature and humidity sensing, Wi-Fi connectivity and smartphone control. It suits households wanting an affordable smart thermostat with voice assistant support and automated energy-saving features. ★ Ideal forIt specifically suits people seeking energy-saving features because it uses scheduled adjustments, away settings, energy-saving recommendations and humidity sensing, while claiming savings of up to 23% on heating and cooling costs.
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Google Nest Learning Thermostat 4th Gen with Nest Temperature Sensor 2nd Gen
US
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£176.42 ≈ | — | — | ✓ | Google Assistant, Amazon Alexa, Apple Home | ✓ | ✓ | Yes |
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The Google Nest Learning Thermostat 4th Gen includes a Nest Temperature Sensor 2nd Gen to help manage hot and cold spots. It learns temperature preferences, supports energy-saving features such as Adaptive Eco and smart ventilation, and works with major smart home platforms. ★ Ideal forIt suits energy-conscious households because it combines learning schedules, Adaptive Eco, away detection, natural heating and cooling, smart ventilation, Energy Shift, and remote temperature sensing.
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Google Nest Thermostat Model GA01334-US
US
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£58.80 ≈ | Less than 1 kWh/month | 32 to 104°F operating ambient | ✓ | Google Assistant and Amazon Alexa | ✓ | ✓ | Built-in humidity sensor |
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The Google Nest Thermostat GA01334-US is a Wi-Fi-connected smart thermostat with remote control through the Google Home app, voice control, scheduling, and automatic energy-saving features. It suits homeowners who want convenient HVAC control and lower energy use without needing a learning thermostat. ★ Ideal forThis model suits people seeking the most energy-saving features because it uses less than 1 kWh/month, can activate Eco mode when your phone indicates you have left, offers Seasonal Savings and Savings Finder, and provides energy-use reports.
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