What is the quietest smart thermostat available in the market?
This page compares 10 smart thermostats with verified specifications and prices. Top options include Sensi Sensi Touch 2, Google Nest Google Nest Learning Thermostat 4th Gen, Copeland Sensi Touch Smart Thermostat ST75W. Prices range from £41 to £223. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Energy Consumption (watts) ⇅ | Temperature Range (°F / °C) ⇅ | Smart Assistant Compatibility ⇅ | Geofencing ⇅ | Remote Access ⇅ | Learning Capabilities ⇅ | Voice Control ⇅ |
|---|---|---|---|---|---|---|---|---|
|
Sensi Sensi Touch 2
US
|
£40.58 ≈ | — | — | ✓ | ✓ | ✓ | ✗ | ✓ |
|
The Sensi Touch 2 is an ENERGY STAR-certified touchscreen thermostat with remote access, geofencing, flexible 7-day scheduling, usage reports, and compatibility with optional room sensors. It suits households wanting app and voice control with a modern touchscreen, provided their HVAC system has a C-wire. ★ Ideal forIt is not proven to be the quietest smart thermostat because no acoustic or operating-noise specification was found, although its app, geofencing, and voice control can reduce the need to interact with the wall unit.
Sources:
|
||||||||
|
Google Nest Google Nest Learning Thermostat 4th Gen
US
|
£169.71 ≈ | Less than 1 kWh/month | 32 to 104F | ✓ | — | ✓ | ✓ | ✓ |
|
The Nest Learning Thermostat (4th gen) learns your temperature preferences with Smart Schedule and helps manage comfort and energy use. It includes a Nest Temperature Sensor (2nd gen) to help with hot and cold spots, and it lets you control settings from anywhere with the Nest app. It supports Google Home and Matter-enabled apps and voice assistants. ★ Ideal forFor the quietest smart thermostat available, this model is a learning thermostat that supports system-level control and integrates with Google Home and Matter voice assistants, which avoids adding any separate loud external control unit since it is controlled through the app/assistants.
Sources:
|
||||||||
|
Copeland Sensi Touch Smart Thermostat ST75W
US
|
£124.71 ≈ | — | — | ✓ | ✓ | ✓ | ✗ | ✓ |
|
The ST75W is a touchscreen Wi-Fi thermostat with smartphone control, geofencing, flexible scheduling, usage reports, and smart alerts. It suits homeowners who want broad HVAC and smart-home compatibility without an automatically learning schedule. ★ Ideal forIt suits shoppers prioritizing a quiet thermostat because it has no reported active noise-producing features, while its remote access, geofencing, and voice control handle temperature changes without frequent interaction at the wall unit.
Sources:
|
||||||||
|
Honeywell Home X8S Smart Thermostat
US
|
£177.09 ≈ | — | — | ✓ | ✓ | ✓ | ✓ | ✓ |
|
The Honeywell Home X8S is a touchscreen smart thermostat with remote app control, geofencing-based Auto Away, indoor air-quality monitoring, occupancy detection, and compatibility with major smart-home platforms. It suits homeowners who want advanced comfort management, energy-saving automation, and video doorbell integration from a premium thermostat. ★ Ideal forIt is not specifically suited to the quietest smart thermostat question because no online source identifies a sound level or silent-operation feature, although its occupancy detection and Adaptive Recovery can manage heating and cooling efficiently.
Sources:
|
||||||||
|
Honeywell Home X2S Smart Thermostat
US
|
£62.71 ≈ | — | — | ✓ | ✗ | ✓ | ✗ | ✓ |
|
The Honeywell Home X2S is an ENERGY STAR certified Wi-Fi thermostat with flexible scheduling, auto-away functionality, and remote control through the First Alert by Resideo app. It suits homeowners seeking an affordable, DIY-friendly smart thermostat for compatible conventional or heat pump systems. ★ Ideal forThe X2S may suit someone seeking a quiet smart thermostat because it offers unobtrusive automated scheduling and auto-away operation, although no published noise-level specification was found.
Sources:
|
||||||||
|
Eve Eve Thermostat for Underfloor Heating
US
|
£88.51 ≈ | minimal | — | ✓ | — | — | — | ✓ |
|
Eve Thermostat is a Matter-over-Thread smart thermostat for water-based underfloor heating. It offers app, voice, schedule, and local control, with silent Triac switching and no subscription or manufacturer cloud dependency. ★ Ideal forIt suits people seeking the quietest smart thermostat because its Triac technology switches underfloor-heating actuators completely silently, without the clicking associated with mechanical relays. |
||||||||
|
Sensi Sensi Touch 2 Smart Thermostat ST76U
US
|
£154.95 ≈ | 1.23 W standby power | — | ✓ | ✓ | ✓ | ✓ | ✓ |
|
The Sensi Touch 2 is a touchscreen Wi-Fi thermostat with remote app control, geofencing, flexible scheduling, voice control, and compatibility with room sensors. It suits homeowners who want broad HVAC compatibility and convenient smart-home controls without machine-learning automation. ★ Ideal forIt suits people seeking a quiet smart thermostat because its remote access, geofencing, flexible scheduling, and voice control can reduce unnecessary HVAC operation, while the product supports energy-usage insights and has no reported machine-learning activity that would add complexity. |
||||||||
|
MP Global Products THERMPROTOUCH 7-Day Programmable Smart Home Wi-Fi Floor Thermostat
US
|
£222.76 ≈ | 1800/3600 watts | — | ✓ | — | ✓ | ✓ | ✓ |
|
This Wi-Fi thermostat is designed for electric radiant floor heating and supports 120V or 240V systems, 7-day scheduling, floor sensing, energy-use monitoring, and remote control. It suits homeowners who want programmable, app-connected floor heating with Alexa or Google Assistant voice control. ★ Ideal forIt suits the search for the quietest smart thermostat because it controls electric radiant floor heating with a remote Wi-Fi connection, adaptive heating, and voice control without requiring a conventional forced-air heating system.
Sources:
|
||||||||
|
Sinopé TH1123WF
US
|
£143.88 ≈ | — | Setpoint 5 °C to 30 °C (41 °F to 86 °F); operating 0 °C to 50 °C (32 °F to 122 °F) | ✓ | ✓ | ✓ | — | ✓ |
|
The Sinopé TH1123WF is a Wi-Fi thermostat for electric baseboards, convectors, fan-forced convectors, and radiant ceiling heating. It offers remote control, geofencing, scheduling, energy reports, and silent TRIAC operation, making it suitable for homes using compatible electric heating systems. ★ Ideal forIt suits someone seeking a quiet smart thermostat because its TRIAC switching operates silently without the clicking noise produced by mechanical relays.
Sources:
|
||||||||
|
QuietWarmth THERMAEGH 7-Day Smart Home Floor Heating Thermostat with Floor Sensor
US
|
£141.93 ≈ | Energy use monitoring with daily, weekly, and monthly power logging | 41°F to 104°F | ✓ | — | ✓ | ✓ | ✓ |
|
This Wi-Fi touchscreen thermostat controls electric radiant floor heating with a 7-day schedule, floor sensor, energy monitoring, and remote app or web access. It suits homeowners who want precise floor-temperature control and smart-home integration for 120V or 240V systems. ★ Ideal forIt is a strong candidate for the quietest smart thermostat question because it is designed for radiant floor heating with a floor sensor, adaptive scheduling, remote access, and voice control, although no published acoustic rating is provided.
Sources:
|
||||||||