# What are the quietest smart thermostats available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the quietest smart thermostats available?

## Products

### Honeywell Home Honeywell Home T9 Smart Thermostat
```yaml
product: honeywell-home-honeywell-home-t9-smart-thermostat
brand: Honeywell Home
price_gbp: 154.3
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
geofencing: true
smartphone_app: Honeywell Home app
humidity_sensing: Yes
wi_fi_connectivity: Wi-Fi 802.11 b/g/n, 2.4 GHz and 5 GHz
voice_assistant_compatibility: Amazon Alexa, Google Assistant, Microsoft Cortana, Samsung SmartThings, IFTTT, Apple HomeKit
```

- **Price:** £154.3 [^1]
- **Summary:** The Honeywell Home T9 is an ENERGY STAR certified smart thermostat with Wi-Fi control, geofencing, flexible 7-day scheduling, and support for remote room sensors. It suits households that want to prioritize comfort in specific rooms and manage heating or cooling remotely.
- **Ideal For:** It suits people seeking a quieter smart-thermostat experience because its remote sensors can prioritize occupied rooms and its geofencing and smartphone controls reduce the need for frequent adjustments at the thermostat.

---
## References & Sources
[^1]: The Home Depot, accessed 2026-09-01. https://www.homedepot.com/p/Honeywell-Home-T9-WiFi-7-Day-Programmable-Smart-Thermostat-with-Touchscreen-Display-and-Smart-Room-Sensor-RCHT9610WFSW2003/312604036