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Best Smart Thermostats

Smart Thermostat Comparison 2026

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Best Product
Tado smart thermostat
Tado smart thermostat
Check Price
Amazon
Bestseller
Speedo smart thermostat
Speedo smart thermostat
Check Price
Amazon
Best Price
HomeMatic 143159A0
HomeMatic 143159A0
Check Price
Amazon
Drayton Wiser WT724R9K0902
Drayton Wiser WT724R9K0902
Check Price
Amazon
Honeywell RTH9585WF1004
Honeywell RTH9585WF1004
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Amazon
Danfoss Eco 2
Danfoss Eco 2
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Amazon
WHITE-RODGERS DIVISION ST55
WHITE-RODGERS DIVISION ST55
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Amazon
Our Ratings
Model
Customer Ratings
Seller
Available From
Manufacturer
Dimensions
Operating voltage
Display
Type of assembly
Radio technology
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
1
Best Product
Tado smart thermostat
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
Tado smart thermostat
Bewertung
5194 Reviews
Zum Anbieter
Amazon
Available at
amazon
£146.08
eBay
£156.70
Manufacturer
Tado
Dimensions
2,7 x 3,5 x 6,9 in
Operating voltage
230 V
Display
LC display
Type of assembly
Glue
Radio technology
Wireless
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • Has a practical timer
  • Distinguishes between the working week and the weekend
  • With app
  • With anti-freeze protection
  • Is Wi-Fi capable
2
Bestseller
Speedo smart thermostat
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
Speedo smart thermostat
Bewertung
2440 Reviews
Zum Anbieter
Amazon
Available at
amazon
£165.07
eBay
Check Price
Manufacturer
Speedo
Dimensions
2 x 3,9 x 5,9 in
Operating voltage
4,5 V
Display
Type of assembly
Glue, Screws
Radio technology
Wireless
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • No cable clutter thanks to Wi-Fi
  • Can program settings for different days
  • Has a practical timer
  • Control via app
3
Best Price
HomeMatic 143159A0
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
HomeMatic 143159A0
Bewertung
4790 Reviews
Zum Anbieter
Amazon
Available at
amazon
£49.95
eBay
Check Price
Manufacturer
HomeMatic
Dimensions
0,9 x 3,3 x 3,3 in
Operating voltage
1,5 V
Display
LC display
Type of assembly
Flush mounting, Adhesive tape, Screws, Surface-mounted
Radio technology
Wireless, 868 MHz
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • Can program settings for different days
  • Wireless reception via Wi-Fi
  • App control
  • Equipped with a frost anti-freeze protection
  • With voice control mode
  • Has a practical timer
4
Drayton Wiser WT724R9K0902
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
Drayton Wiser WT724R9K0902
Bewertung
1884 Reviews
Zum Anbieter
Amazon
Available at
amazon
£109.46
eBay
£129.99
cityplumbing.co.uk
£88.74
onbuy.com
£127.92
Manufacturer
Drayton Wiser
Dimensions
2,8 x 3,7 x 5,9 in
Operating voltage
230 V
Display
LC display
Type of assembly
Radio technology
Wi-Fi
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • No cable clutter thanks to Wi-Fi
  • Programmable timer
  • Can program settings for different days
5
Honeywell RTH9585WF1004
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
Honeywell RTH9585WF1004
Bewertung
17402 Reviews
Zum Anbieter
Amazon
Available at
amazon
£176.13
eBay
Check Price
Manufacturer
Honeywell
Dimensions
0,9 x 3,5 x 4,5 in
Operating voltage
240 V
Display
Touch screen
Type of assembly
Glue
Radio technology
Wi-Fi, Wireless
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • App control
  • Is Wi-Fi capable
  • Timer included
  • Distinguishes between the working week and the weekend
6
Danfoss Eco 2
Vergleichsergebnis
Rating
Very Good
05 / 2025
Model
Danfoss Eco 2
Bewertung
711 Reviews
Zum Anbieter
Amazon
Available at
amazon
£77.99
eBay
Check Price
Manufacturer
Danfoss
Dimensions
1,2 x 1,2 x 1,6 in
Operating voltage
1,5 V
Display
LC display
Type of assembly
Screws
Radio technology
Bluetooth, Wireless
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • Timer included
  • With app
  • With anti-freeze protection
  • Can program settings for different days
  • Wireless reception via Wi-Fi
7
WHITE-RODGERS DIVISION ST55
Vergleichsergebnis
Rating
Good
01 / 2025
Model
WHITE-RODGERS DIVISION ST55
Bewertung
Zum Anbieter
Amazon
Available at
amazon
£137.10
eBay
Check Price
Manufacturer
Dimensions
1 x 3,7 x 5,9 in
Operating voltage
24 V
Display
Type of assembly
Radio technology
Wireless
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • Programmable timer
  • App control
  • Distinguishes between the working week and the weekend
  • Is Wi-Fi capable