Which smart thermostats are compatible with my existing HVAC system?
This page compares 2 smart thermostats with verified specifications and prices. Top options include Sensi Sensi Smart Thermostat ST55, tado° Starter Kit - Wired Smart Thermostat V3+ Black Edition. Prices range from £96 to £111. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Energy Consumption (watts) ⇅ | Temperature Range (°F / °C) ⇅ | Smart Home Compatibility ⇅ | Geofencing ⇅ | Learning Capabilities ⇅ | Voice Assistant Compatibility ⇅ |
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Sensi Sensi Smart Thermostat ST55
US
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£95.92 ≈ | — | 50°F to 99°F set-point; 32°F to 99°F display | ✓ | ✓ | ✗ | Amazon Alexa, Google Assistant |
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The Sensi ST55 is an ENERGY STAR-certified Wi-Fi thermostat with remote control, flexible seven-day scheduling, usage reports, geofencing, and smart alerts. It suits homeowners seeking broad HVAC compatibility and straightforward DIY installation, especially because a C-wire is not required for most conventional systems. ★ Ideal forIt suits existing HVAC systems because it works with most residential heating and cooling equipment, including heat pumps, and usually does not require a C-wire for conventional heating and cooling systems.
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tado° Starter Kit - Wired Smart Thermostat V3+ Black Edition
US
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£110.68 ≈ | — | — | ✓ | ✓ | ✓ | Alexa, Google Assistant, Apple HomeKit |
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tado° Starter Kit - Wired Smart Thermostat V3+ Black Edition is a wired smart thermostat setup designed for central heating, using geofencing to automatically switch between Away and home temperature modes based on your smartphone location. It also supports smart-home voice control through common assistants and integrates with tado°'s ecosystem via the included internet bridge. ★ Ideal forIf you want compatibility with existing HVAC that uses a wired thermostat connection, this wired V3+ kit is designed for homes with an existing wired thermostat and works with most boilers and heat pumps (Relay or OpenTherm).
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