Smart Thermostats 2025 are the smartest way to upgrade your home’s comfort and save on energy bills this year. In this guide, we handpicked the top 5 smart thermostats you can buy right now on Amazon, each offering unique features, easy control, and smart home integration. Whether you’re looking to lower your heating costs, automate your climate, or simply enjoy more convenience, these thermostats will transform how you manage your home’s temperature. Explore the best options and find your perfect match today!
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Toggle1. Best Smart Thermostats 2025 – Google Nest Learning Thermostat 3rd Gen
Take control of your home’s comfort and energy savings with the Google Nest Learning Thermostat (3rd Gen). This sleek, stainless steel smart thermostat programs itself based on your preferences and adjusts the temperature automatically when you’re home or away — saving energy without sacrificing comfort.
📅 Auto-Schedule & Smart Learning
No more fiddling with dials! The Nest Thermostat learns your daily routine and creates a custom schedule to keep your home comfortable while cutting down on unnecessary heating or cooling.
🏠 Home/Away Assist
Stop heating or cooling an empty house. The thermostat’s Home/Away Assist feature automatically adjusts the temperature when you leave, helping you save energy effortlessly.
📲 Remote Control from Anywhere
Adjust your thermostat on the go using the Nest app on your phone, tablet, or laptop. Whether you’re at work or on vacation, you’re always in control.
🌿 Save Energy & Money
The Leaf icon appears when you set a temperature that saves energy. Plus, you can check your Energy History in the app to see how much you’ve saved over time — perfect for eco-conscious homeowners.
🎤 Works with Alexa & Google Assistant
Pair your Nest with Alexa or Google Assistant for hands-free voice control. Just say, “Alexa, set the thermostat to 72 degrees,” and you’re done.
⚙️ Quick Specs
- Model: Nest Learning Thermostat 3rd Gen, Stainless Steel
- Control: App, voice (Alexa/Google), remote
- Connectivity: Wi-Fi, Bluetooth Low Energy (BLE)
- Power: Battery-powered, 24 Volts
- Display: 2.08-inch digital screen with backlight
- Mounting: Wall-mount with included hardware
- Dimensions: 3.3″ diameter × 1.21″ height
With over 39,000+ 5-star reviews and trusted by millions, the Google Nest Learning Thermostat brings smarter, more efficient climate control to your home — automatically and beautifully.
👉 View on Amazon2. Best Smart Thermostats 2025 — Bosch Smart Home Room Thermostat II
Take control of your home’s heating with the Bosch Smart Home Room Thermostat II, designed to precisely manage smart radiator thermostats and keep every room at the perfect temperature. Compatible with Alexa and Google Assistant, this thermostat combines style, intelligence, and flexibility for modern living.
🎯 Precise Heat Adjustment
Manage smart radiator thermostats so your chosen temperature is reached quickly and accurately, saving energy and boosting comfort.
🌡️ Real-Time Data
Stay informed with the LED matrix display that shows the current room temperature, heating status, and relative humidity at a glance.
📍 Flexible Placement
Use it on a stand anywhere in your room or mount it on the wall — perfect for any home setup.
📲 Convenient Control
Adjust your heating directly with intuitive press-and-rotate buttons or remotely with the Bosch app on your smartphone.
🛠️ Easy Integration
Requires the Bosch Smart Home Controller (sold separately) for seamless integration into your Bosch Smart Home system, unlocking maximum functionality and compatibility with other Bosch devices.
⚙️ Quick Specs
- Model: Bosch Smart Home Room Thermostat II
- Control: Button + app + voice (Alexa & Google Assistant)
- Connectivity: Wi-Fi, ZigBee
- Power: 4× AAA batteries (included)
- Display: LED matrix with backlight
- Dimensions: 28D x 86W x 87H mm
- Mounting: Standalone or wall-mount
Whether you want precision heating, easy control from anywhere, or seamless integration with your smart home ecosystem, the Bosch Room Thermostat II makes smart comfort effortless and reliable.
👉 View on Amazon3. Best Smart Thermostats 2025 — SPORTARC Programmable Digital Home Thermostat
Upgrade your heating control with the affordable and smart SPORTARC Programmable Digital Home Thermostat. Perfect for gas boilers or underfloor heating systems, this thermostat combines a modern LCD display, precise temperature control, and flexible programming for comfort and efficiency.
🖥️ Clear Digital LCD Display
Features an easy-to-read backlit screen that shows the current room temperature and system status. Powered by two 1.5V batteries for cordless installation anywhere you need it.
🗓️ Programmable 5+2 Schedule
Customize different heating schedules for weekdays and weekends with the 5+2 day programmable function. Set your preferred temperature and let the thermostat automatically manage heating throughout the week.
🚸 Enhanced Safety Features
Comes with a child lock to prevent accidental changes and an anti-freeze function to protect your heating system during low temperatures, ensuring peace of mind for your family.
🔧 Easy & Flexible Installation
Install on the wall with included screws or place it wherever you want — no wiring headaches. Perfect for both new installations and upgrades.
⚙️ Quick Specs
- Model: SPORTARC Programmable Digital Home Thermostat
- Control: Button control with LCD display
- Connectivity: Wi-Fi
- Power: 2× 1.5V batteries (included)
- Temperature Control: Digital, programmable
- Mounting: Wall-mount or portable
- Dimensions: 2.8D × 8.5W × 8.5H cm
For an affordable way to bring programmable smart heating to your home, the SPORTARC Thermostat delivers simplicity, efficiency, and reliable control — all without breaking the bank.
👉 View on Amazon4. Best Smart Thermostats 2025 — Honeywell Home T9 Smart Thermostat with Sensor
Enjoy personalized comfort and energy savings with the Honeywell Home T9 WiFi Smart Thermostat. Equipped with a smart room sensor, this ENERGY STAR-certified thermostat adapts to your schedule and delivers precise temperature control where you need it most. Compatible with Alexa, Google Assistant, Apple HomeKit, and more, it’s perfect for modern connected homes.
🏡 Room-to-Room Comfort
The included Smart Room Sensor can detect which rooms are occupied and focus heating or cooling there automatically. Prioritize comfort in the rooms you use most — like your bedroom at night or living room during the day.
📱 Smart, Remote Control
Adjust your thermostat from anywhere with the Resideo app or use voice commands through Alexa, Google Assistant, and Apple HomeKit. Stay in control of your home’s comfort, whether you’re home or away.
📶 Exceptional Sensor Range
The T9’s Smart Room Sensor uses advanced Honeywell Home technology with up to 200 feet of wireless range — more than enough to cover large homes or tricky layouts.
💸 Save Energy & Money
ENERGY STAR certified for efficiency, with features like Auto Home/Away Scheduling and optional Demand Response Program enrollment to help you save even more by reducing energy use during peak hours.
🔧 Easy DIY Installation
Includes a C-wire power adapter for broad compatibility. Step-by-step guided installation in the Resideo app makes setup quick and stress-free for most homeowners.
⚙️ Quick Specs
- Model: Honeywell Home T9 (RCHT9610WFSW2003)
- Control: App, touchscreen, voice
- Connectivity: Wi-Fi (supports Alexa, Google, Apple HomeKit, SmartThings)
- Power: 2× AAA batteries (included) + optional C-wire adapter
- Display: LCD touchscreen with backlight
- Dimensions: 0.94″D × 3.7″W × 4.92″H
- Sensors: 1 Smart Room Sensor included (range up to 200ft)
Whether you want room-to-room comfort, energy savings, or a thermostat that works with your favorite smart home assistants, the Honeywell T9 delivers a premium experience for any modern household.
👉 View on Amazon5. Best Smart Thermostats 2025 — Siemens 134-1084 Heating/Cooling Thermostat
For reliable and straightforward temperature control, the Siemens 134-1084 Line Voltage Room Thermostat is a robust choice for both heating and cooling applications. Designed with a classic mechanical knob, it’s ideal for industrial, commercial, or residential settings where simplicity and durability are key.
🌡️ Wide Temperature Range
Easily adjust your heating or cooling with a temperature range of 40–90°F (5–30°C), clearly marked in both °F and °C scales on the setpoint knob.
🔧 Built Tough for High Loads
With SPDT switching and motor ratings of 6A at 120VAC or 3A at 240VAC, this thermostat handles demanding electrical loads reliably. Its resistive rating goes up to 10A at 120/277VAC, making it perfect for high-power systems.
🛠️ Easy Installation
Features a separable mounting plate for convenient wiring and installation without removing the cover. Locking cover with Allen screws provides added security in commercial environments.
🔒 Adjustable Stops & Optional Faceplate
Includes adjustable low and high range stops for precise control limits. Comes with an optional blank faceplate if you prefer a streamlined look.
⚙️ Quick Specs
- Model: Siemens 134-1084
- Control: Manual mechanical knob (SPDT switch)
- Power: 120/240/277 Volts
- Temperature Range: 40–90°F (5–30°C)
- Dimensions: 4.75 inches height
- Mounting: Wall mount with included hardware
- Materials: Industrial-grade components
For those who value reliability and simplicity in temperature control, the Siemens 134-1084 offers industrial-level durability with easy manual operation — perfect for homes, workshops, and commercial spaces alike.
👉 View on AmazonReady to upgrade your comfort and energy savings with the best smart thermostats 2025? Choose the perfect option for your home today!
👉 View All Smart Thermostats on Amazon
Interested in more ways to upgrade your home? Check out our selection of smart home appliances and gadgets to make your living space even more comfortable and efficient.
