Menu

We may earn a small commission from purchases made through our trusted partner and affiliate links, at no extra cost to you. Learn more ›

Best Smart Thermostats

Smart thermostats offer Wi-Fi connectivity, app control, and energy savings for modern homes. Explore top models from Honeywell, Sensi, ecobee, and more for effortless climate control.

75 products 18 subcategories

Select a Product

Click on a product from the list to view its details.

PRIME

ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Last update on . Affiliate links, prices, images, product titles, and highlights from Amazon Product Advertising API.

Detailed Review

Pros

Cons

Key Features

User Reviews

Your review will be visible after approval.

Loading reviews...
Briidea Smart WiFi Reptile Thermostat Hygrostat with Timer - 3-in-1 Temp/Humidity Controller, Dual 2.4/5G App Control for Incubators, Greenhouses

The Briidea 3-in-1 Smart WiFi Temperature and Humidity Controller offers precise remote monitoring via dual-band app for reptile habitats and greenhouses. Its high-accuracy sensor (±0.4°C/±3% RH) and power-off memory ensure stable environments, ideal for reptile owners, homebrewers, and mushroom growers.

  • Control temp and humidity remotely from anywhere via intuitive app with dual 2.4/5GHz WiFi for ultimate convenience
  • 3-in-1 design with independent outlets for heating, humidity, and timer keeps reptile habitats perfectly balanced day and night
  • High-precision sensor (±0.4°C/±3% RH) delivers accurate readings to maintain safe, stable environments effortlessly
  • Power-off memory retains settings automatically, ensuring uninterrupted comfort even after outages
  • Versatile for reptiles, incubators, greenhouses, mushrooms, homebrewing, and more—one device handles it all

Dual-band WiFi ensures reliable connectivity on modern routers. High-accuracy sensor provides precise control beyond basic thermostats. Independent outlets allow customized heating, humidity, and lighting cycles.

Requires compatible 2.4/5GHz WiFi router and app setup for full functionality. No user reviews yet, so real-world app performance unverified. Dependent on power source with no built-in battery backup.

Google Nest Learning Thermostat 3rd Gen Polished Steel - Smart WiFi Programmable Thermostat Saves 10-15% Energy

The Google Nest Learning Thermostat is a smart Wi-Fi device that auto-programs based on your schedule and habits to save 10-12% on heating and 15% on cooling. Buy it if you want effortless remote control, voice compatibility, and energy insights for any compatible home.

  • Auto-learns your schedule and adjusts temperatures to save up to 15% on energy bills
  • Remote control via Nest app or voice with Alexa and Google Assistant from anywhere
  • Home/Away Assist detects absence and switches to Eco mode to avoid wasting energy
  • Energy History tracks usage patterns and displays Leaf icon for optimal savings
  • HVAC monitoring sends alerts for potential issues to prevent costly repairs

Compatible with 95% of HVAC systems and installs in 30 minutes or less. Proven average savings of $131-145 yearly based on independent studies. Beautiful polished steel design blends with any home decor.

Requires stable Wi-Fi and internet for remote features and alerts. Energy savings not guaranteed and depend on usage, weather, and rates. HVAC alerts provide info only, not professional diagnosis.

Tapo T315 Smart Temperature & Humidity Monitor: 2.7" E-Ink Display, Swiss Sensor, Real-Time App Alerts, 2-Year Battery - Hub Required (White)

The Tapo T315 is a Wi-Fi smart temperature and humidity monitor with a 2.7-inch E-Ink display and Swiss-made sensor for accurate readings updated every 2 seconds. Homeowners needing reliable monitoring with app notifications, data export, and up to 2-year battery life should buy it, but only with the required Tapo Hub H100.

  • View real-time temperature and humidity from any angle on sunlight-readable 2.7" E-Ink display
  • Swiss-made sensor delivers pinpoint accuracy (±0.54°F, ±3% RH) with updates every 2 seconds
  • Get instant app alerts when levels exceed your custom comfort zones
  • Store and export 2 years of data for free to track trends effortlessly
  • Enjoy up to 2-year battery life on included AAA batteries for hassle-free use

Exceptional accuracy from premium Swiss sensor. Low-power E-Ink display with wide viewing angle and no glare. Long-lasting 2-year battery under normal use.

Requires separate Tapo Hub H100 (sold separately). Needs 2.4GHz Wi-Fi and compatible Sub-1G band for region. Battery life varies based on usage conditions.

ecobee Smart Sensor 2-Pack: Occupancy Sensors for Smart Thermostats - Comfort, Security & Energy Savings

The ecobee Smart Sensor 2-Pack uses infrared tech to detect room occupancy and temperature up to 60 feet away, wirelessly signaling your ecobee thermostat for automatic adjustments. Its standout quality is balancing comfort in key rooms like bedrooms while saving energy; buy it if you own an ecobee smart thermostat.

  • Achieve perfect room-by-room comfort by auto-adjusting temps when occupied
  • Save energy and money by avoiding heating or cooling empty rooms
  • Monitor household activity for smarter home management via the ecobee app
  • Enhance security with real-time motion alerts (subscription required)
  • Enjoy wireless range up to 60 feet through walls and floors

Long 60-ft wireless range ensures whole-home coverage. Quick, tool-free installation at 5ft height. Seamless ecobee app integration for remote monitoring.

Requires compatible ecobee smart thermostat. Full security alerts need separate subscription. No standalone use without ecobee ecosystem.

Google Nest Thermostat (Renewed) - Programmable Smart WiFi Thermostat for Home - Charcoal, 4.3/5 Stars, $69.95

This renewed Google Nest Thermostat is a programmable WiFi smart thermostat for home use, professionally inspected to work and look like new. With a 4.3/5 rating from 137 reviews, it's perfect for budget-savvy homeowners wanting reliable smart climate control.

  • Achieve energy savings with smart, automatic temperature adjustments
  • Control your home comfort remotely via WiFi app
  • Programmable schedules for effortless daily routines
  • Like-new performance at a renewed low price of $69.95
  • Backed by Amazon Renewed Guarantee for peace of mind

Professionally tested to work like new. Strong 4.3/5 rating from 137 verified reviews. Eligible for full replacement or refund.

Refurbished status may show minor cosmetic wear. Limited color option to charcoal only. No additional features listed beyond basics.

Honeywell Home T9 WiFi Smart Thermostat Pack of 2 with Smart Room Sensors - Touchscreen, App Control, Multi-Room Comfort

This pack of 2 Honeywell Home T9 WiFi Smart Thermostats includes one Smart Room Sensor each for precise multi-room temperature and humidity monitoring via touchscreen or app. Its standout multi-room focus and energy-saving Auto Home/Away scheduling make it perfect for homeowners seeking balanced whole-home comfort.

  • Save energy and money with remote app control, Auto Home/Away scheduling, and ENERGY STAR certification plus utility rebates
  • Achieve perfect sleep and living comfort by prioritizing temperature in key rooms like bedrooms using smart sensors
  • Enjoy reliable coverage with sensors transmitting up to 200 ft for whole-home monitoring
  • Balance comfort across multiple rooms automatically based on occupancy or schedules without choosing favorites
  • Control effortlessly via Resideo app, Alexa, HomeKit, Google Assistant, or touchscreen

Multi-room sensors deliver targeted comfort and humidity tracking. Extensive smart home integration for seamless voice and app control. Proven energy savings through geofencing and demand response programs.

Requires C-wire or included adapter; check compatibility first. Not compatible with electric baseboard heat (120-240V) or heating-only oil furnaces without C-wire. Higher price point for pack of 2.

ecobee3 Lite Smart Thermostat - WiFi Programmable, Works with Alexa Siri Google Assistant, Energy Star, DIY Install Black

The ecobee3 Lite is a programmable WiFi smart thermostat that saves up to 23% on heating and cooling costs compared to a 72°F hold. With 4.4/5 stars from 12,435 reviews, it's perfect for homeowners wanting easy DIY install and app-based control compatible with Siri, Alexa, and Google Assistant.

  • Save up to 23% annually on heating and cooling bills with eco+ energy optimization
  • Control temperature remotely via iOS, Android, or Apple Watch app for ultimate convenience
  • DIY installation in 45 minutes or less with everything included in the box
  • Seamless integration with Siri, Alexa, and Google Assistant for voice control
  • Energy Star certified for proven efficiency and reliability

Exceptional 4.4/5 rating from over 12,000 reviews. Significant energy savings up to 23% annually. Quick and easy 45-minute DIY installation.

No built-in occupancy sensor (available on higher models). Requires HVAC compatibility check before purchase. Refurbished unit comes with 90-day warranty instead of full 3 years.

ecobee Trim Plate for Smart Thermostat Essential - Covers Wall Imperfections, Old Wiring & Junction Boxes - Flush Fit Accessory

The ecobee Trim Plate is a dedicated accessory for the Smart Thermostat Essential that covers scuffs, marks, gaps, and old wiring for a clean install. It's essential for homes with junction boxes and ideal for anyone seeking a flawless wall finish.

  • Hides wall scuffs, marks, gaps, and old thermostat holes for a fresh, professional look
  • Fits flush against walls with smooth round edges for seamless integration
  • Required for junction box installs, covering wiring safely and neatly
  • Perfectly matches your ecobee Smart Thermostat Essential design
  • Easy DIY setup with scannable QR code mobile installation guide

Covers imperfections and old wiring effortlessly. Flush, matching fit enhances thermostat aesthetics. Essential and compatible with junction boxes.

Compatible only with ecobee Smart Thermostat Essential, not other models. Unnecessary if your wall is already perfect. Additional purchase required for junction box setups.

DIGITEN Wireless Thermostat Outlet 1800W - Remote Control Plug-in Temperature Controller for Space Heaters, Fans, AC, Heating & Cooling

The DIGITEN Wireless Thermostat Outlet is a plug-and-play remote-controlled device that automates temperature control for appliances up to 1800W in heating or cooling modes. Its space-saving power cord design and easy operation make it perfect for homeowners managing space heaters, fans, or AC units.

  • Effortless plug-and-play setup: Select mode, set temperature, and relax—no programming needed
  • Space-saving power cord: Frees up wall outlets without blocking adjacent plugs
  • Safer high-power use: Separated input/output reduces heat buildup and burnout risk, FCC certified
  • Precise remote sensing: Built-in sensor maintains exact temperature for comfort
  • Versatile for any space: Ideal for home heaters, AC, fans, greenhouses, or pet habitats

Simple operation with intuitive remote and switchable °C/°F. High 1800W capacity handles powerful appliances like space heaters. Innovative design saves socket space and enhances safety.

Requires 2 AAA batteries for remote (not included). RF range limited to same space—remote and receiver must stay close. No advanced scheduling; basic on/off temperature control only.

BSEED WiFi Smart Thermostat: Touch Screen, 7-Day Programmable, Energy Saving, Alexa/Google/Siri Compatible, Easy DIY Install w/ C-Wire Adapter - Black

The BSEED WiFi Smart Thermostat features a 7-day programmable schedule and Home/Away auto-adjust for energy-efficient climate control. Homeowners seeking easy DIY setup and voice compatibility with Siri, Alexa, and Google should buy it.

  • Slash HVAC costs with 7-day programming and smart Home/Away detection for automatic energy savings
  • Effortless temperature control via intuitive touch screen with weather updates and filter alerts
  • Remote access anywhere using Tuya App, plus seamless voice commands with Alexa, Google, or Siri
  • DIY install in under 20 minutes with included C-wire adapter, videos, and guides
  • Enhanced safety and convenience: child lock, fan control, WiFi auto-reconnect, holiday mode

Energy-saving features reduce bills with adaptive programming. Broad smart home compatibility including Alexa, Google, Siri. User-friendly touch interface and app control.

No customer reviews available yet to confirm real-world performance. Requires compatible HVAC system and WiFi connection. Higher price point at $129.99 compared to basic thermostats.

Step into the future of home comfort with smart thermostats, the intelligent upgrade to traditional temperature controls. Found in our Tools & Home Improvement section under HVAC, these devices connect to your Wi-Fi, learn your habits, and integrate seamlessly with smart home ecosystems like Alexa, Google Assistant, and Siri. Whether you're aiming to cut energy bills, enjoy remote access from your phone, or maintain perfect temperatures while away, our curated selection of 15 top-rated models delivers convenience and efficiency for any household.

Why Choose a Smart Thermostat?

Smart thermostats go beyond basic programming by adapting to your lifestyle. They use geofencing to adjust when you arrive home, occupancy sensors for zoned control, and detailed energy reports to help you optimize usage. In a world of rising energy costs, these devices can save up to 20% on heating and cooling bills through precise automation. Ideal for homeowners, renters (with easy DIY installs), and multi-family setups, they fit single-stage or multi-stage HVAC systems.

Key Features to Consider When Shopping

Selecting the right smart thermostat depends on your home setup and needs. Here's what to prioritize:

  • Connectivity & Compatibility: Look for Wi-Fi models with app control. Most work with major voice assistants, but check for C-wire requirements—common adapters make installation straightforward for non-professionals.
  • Display & Interface: Touchscreen color displays, like those on Sensi Touch models, offer intuitive navigation and real-time data.
  • Programming & Intelligence: 7-day schedules, learning algorithms, or sensor-ready designs (e.g., Honeywell Home T9 with room sensors) provide advanced automation.
  • Energy Efficiency: Energy Star certification ensures proven savings. Features like eco modes and usage insights maximize ROI.
  • Installation Ease: DIY-friendly options with clear instructions suit most users, often taking under 30 minutes.

Explore our broader Thermostats & Accessories or Thermostats categories for complementary non-smart options or mounts.

Top Brands and Models in Smart Thermostats

Leading the pack, Sensi Smart Thermostats stand out for their touchscreen interfaces, data privacy focus, and broad compatibility—models like the Sensi Touch 2 (ST76) excel in easy installs and Alexa integration. Honeywell Home delivers reliability with the T9, featuring smart room sensors for multi-room precision, perfect for larger homes. Budget-friendly picks from Riseem offer solid Wi-Fi control for single-stage systems, while ecobee's Enhanced model brings Siri support and robust app features.

Compare programmable vs. non-programmable within HoneywellHome Smart Thermostats or check Riseem Smart Thermostats for affordable entry points. These brands emphasize durability, with blue backlights for visibility and versatile 1-heat/1-cool setups.

Common Use Cases for Smart Thermostats

Energy-Conscious Homeowners: Automate schedules to avoid wasted energy during vacations or work hours.

Smart Home Enthusiasts: Integrate with hubs for voice commands like "Alexa, set the thermostat to 72 degrees."

Multi-Zone Homes: Sensor-equipped models balance comfort across rooms without overworking your HVAC.

Renters or Temporary Setups: Battery-powered or C-wire optional designs allow hassle-free removal.

Pair with other Building Supplies like vents or air filters for a complete system overhaul.

Smart Thermostat Installation Tips

Most models snap onto existing backplates. Verify your HVAC type (gas, electric, heat pump) and use included wiring diagrams. Apps guide you through setup, connecting to your network in minutes. Professional help is rarely needed, but adapters for C-wires are widely available.

Frequently Asked Questions

Do smart thermostats work with all HVAC systems?

Most support single-stage 1-heat/1-cool conventional systems, with many handling heat pumps or multi-stage. Always check product specs for compatibility.

Is a C-wire required for installation?

Many Wi-Fi models like Sensi ST76 require it for reliable power, but adapters or battery options exist for older homes without one.

Can I control the thermostat remotely?

Yes, all featured models offer app-based remote access, geofencing, and voice control via Alexa, Google, or Siri.

Will a smart thermostat save me money?

Energy Star models typically reduce bills by 10-20% through smart scheduling and efficiency reports.

How do I choose between touchscreen and standard displays?

Touchscreens provide vivid, interactive interfaces ideal for frequent adjustments; standard screens suffice for simple, glanceable use.