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Best Smart Thermostats

Smart Thermostat Comparison 2026

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Best Product
Bosch 8750002330
Bosch 8750002330
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Amazon
Best Price
HomeMatic 143159A0
HomeMatic 143159A0
Check Price
Amazon
Bestseller
Speedo smart thermostat
Speedo smart thermostat
Check Price
Amazon
Drayton Wiser WT724R9K0902
Drayton Wiser WT724R9K0902
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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
IP protection class
Radio technology
Temperature range
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
1
Best Product
Bosch 8750002330
Vergleichsergebnis
Rating
Excellent
05 / 2025
Model
Bosch 8750002330
Bewertung
2206 Reviews
Zum Anbieter
Amazon
Available at
amazon
£64.19
eBay
Check Price
Manufacturer
Bosch
Dimensions
2 x 2 x 3,4 in
Operating voltage
1,5 V
Display
LC display
Type of assembly
Glue, Screws, Adhesive tape
IP protection class
IP20
Radio technology
Wireless
Temperature range
0 to 50 °C
Weekly program
Timer
Anti-freeze protection
WLAN capable
App
Voice control
Advantages
  • No cable clutter thanks to Wi-Fi
  • With anti-freeze protection
  • With app
  • Has a practical timer
  • Can program settings for different days
  • Easy to control with through voice control
2
Best Price
HomeMatic 143159A0
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
HomeMatic 143159A0
Bewertung
4792 Reviews
Zum Anbieter
Amazon
Available at
amazon
£49.95
eBay
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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
IP protection class
IP44, IP20, IP14
Radio technology
Wireless, 868 MHz
Temperature range
0 to 35 °C
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
3
Bestseller
Speedo smart thermostat
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
Speedo smart thermostat
Bewertung
2453 Reviews
Zum Anbieter
Amazon
Available at
amazon
£164.12
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
IP protection class
Radio technology
Wireless
Temperature range
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
4
Drayton Wiser WT724R9K0902
Vergleichsergebnis
Rating
Excellent
01 / 2025
Model
Drayton Wiser WT724R9K0902
Bewertung
1887 Reviews
Zum Anbieter
Amazon
Available at
amazon
£107.98
eBay
£125.50
cityplumbing.co.uk
£88.74
onbuy.com
£105.87
Manufacturer
Drayton Wiser
Dimensions
2,8 x 3,7 x 5,9 in
Operating voltage
230 V
Display
LC display
Type of assembly
IP protection class
Radio technology
Wi-Fi
Temperature range
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
17428 Reviews
Zum Anbieter
Amazon
Available at
amazon
£159.20
eBay
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Manufacturer
Honeywell
Dimensions
0,9 x 3,5 x 4,5 in
Operating voltage
240 V
Display
Touch screen
Type of assembly
Glue
IP protection class
Radio technology
Wi-Fi, Wireless
Temperature range
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
£74.99
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
IP protection class
IP20
Radio technology
Bluetooth, Wireless
Temperature range
4 to + 28 °C
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
IP protection class
Radio technology
Wireless
Temperature range
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