# Honeywell Home T9 Smart Thermostat vs Sensi Touch 2 Smart Thermostat: specs and price compared

A sourced, side-by-side comparison of the Honeywell Home T9 Smart Thermostat (Honeywell Home) and Sensi Touch 2 Smart Thermostat (Emerson Sensi) among smart thermostats. Honeywell Home T9 Smart Thermostat is the cheaper of the two at $209.99.

## Side by side

| Spec | Honeywell Home T9 Smart Thermostat | Sensi Touch 2 Smart Thermostat |
| --- | --- | --- |
| US price | $209.99 | $209.99 |
| Brand | Honeywell Home | Emerson Sensi |
| Released | 2019 | 2023 |
| Display | Graphical color touchscreen, 4.92 in H x 3.7 in W | Color touchscreen (size not specified on product page); Sensi app control available |
| Sensors included | Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported | Built-in temperature; compatible with Sensi Room Sensors and Outdoor Sensors (sold separately) for temperature and humidity monitoring |
| Geofencing | Yes | Yes |
| Hvac compatibility | Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage | Universal: single-stage 1H/1C, multi-stage 2H/2C, heat pump 4H/2C; 24V low-voltage systems |
| C wire required | No | No |
| Voice assistants | Amazon Alexa, Google Assistant, Apple HomeKit, Microsoft Cortana, Samsung SmartThings, IFTTT, Ring | Amazon Alexa, Google Assistant, Samsung SmartThings (no Apple HomeKit) |
| Energy reports | Yes | Yes |

## Key differences

- Display: Honeywell Home T9 Smart Thermostat Graphical color touchscreen, 4.92 in H x 3.7 in W vs Sensi Touch 2 Smart Thermostat Color touchscreen (size not specified on product page); Sensi app control available
- Sensors included: Honeywell Home T9 Smart Thermostat Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported vs Sensi Touch 2 Smart Thermostat Built-in temperature; compatible with Sensi Room Sensors and Outdoor Sensors (sold separately) for temperature and humidity monitoring
- Hvac compatibility: Honeywell Home T9 Smart Thermostat Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage vs Sensi Touch 2 Smart Thermostat Universal: single-stage 1H/1C, multi-stage 2H/2C, heat pump 4H/2C; 24V low-voltage systems
- Voice assistants: Honeywell Home T9 Smart Thermostat Amazon Alexa, Google Assistant, Apple HomeKit, Microsoft Cortana, Samsung SmartThings, IFTTT, Ring vs Sensi Touch 2 Smart Thermostat Amazon Alexa, Google Assistant, Samsung SmartThings (no Apple HomeKit)

## What reviewers say

**Honeywell Home T9 Smart Thermostat** — Two whitelisted testers (TechHive, Tom's Guide) reviewed the T9 hands-on in 2019 and rate it a strong, sensor-focused smart thermostat, though neither ran lab benchmarks. Both praise best-in-class remote sensors and easy setup; both flag the missing onboard motion sensor and a less-intuitive app. All six quoted lines verified verbatim against the source text. (2 sourced reviews.)

**Sensi Touch 2 Smart Thermostat** — Three whitelisted testers (TechHive, Pro Tool Reviews, Reviewed) rate the Sensi Touch 2 among the best simple smart thermostats, praising its responsive touchscreen, easy app-guided installation (Pro Tool Reviews clocked ~10 minutes), and support for remote room sensors that average temperatures across the home. All three note it requires a C-wire. Reviewed lab-tested it on a simulated HVAC system with a NIST-calibrated thermometer but published no accuracy figure; its main criticism is the lack of machine learning at a premium price. (3 sourced reviews.)

## Sources

- Honeywell Home T9 Smart Thermostat: https://www.honeywellhome.com/products/t9-smart-thermostat (honeywellhome.com, verified 2026-06-15)
- Sensi Touch 2 Smart Thermostat: https://sensi.copeland.com/en-us/products/touch2-smart-thermostat (sensi.copeland.com, verified 2026-06-15)

Canonical: https://frontdeskreview.com/gear/smart-thermostats/honeywell-home-t9-vs-sensi-touch-2/
Cite: Per The Front Desk Review, Honeywell Home T9 Smart Thermostat ($209.99) vs Sensi Touch 2 Smart Thermostat ($209.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/smart-thermostats/honeywell-home-t9-vs-sensi-touch-2/
License: CC BY 4.0.