# Honeywell Home T9 Smart Thermostat: specs and price

**Price (US):** $209.99 at honeywellhome.com (US MSRP $209.99 (with room sensor) per honeywellhome.com. Discontinued as of 2025-2026; listed as 'Sold out'. Was widely available at ~$150-$210 before discontinuation.), as of 2026-06-27. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 13 smart thermostats we track it is #9 cheapest of 13; category median $159.
**Brand:** Honeywell Home
**Released:** 2019
**Price tracked since:** June 2026

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $209.99 |
| Brand | Honeywell Home |
| Released | 2019 |
| Display | Graphical color touchscreen, 4.92 in H x 3.7 in W |
| Sensors included | Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported |
| Geofencing | Yes |
| Hvac compatibility | Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage |
| C wire required | No |
| Voice assistants | Amazon Alexa, Google Assistant, Apple HomeKit, Microsoft Cortana, Samsung SmartThings, IFTTT, Ring |
| Energy reports | Yes |

## Where it stands

At $210, the Honeywell Home T9 Smart Thermostat is #9 cheapest of the 13 smart thermostats we track, where the median is $159. By release date, it is the oldest of the 14 we date.

## What reviewers say

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. (Based on 2 reviews, 2019-04-26–2019-08-08.)

Praised: Best-in-class remote sensors with long range and quick responsiveness; Easy setup and a bright, responsive touchscreen.
Flagged: The thermostat unit itself has no built-in motion sensor; No auto-away/occupancy triggering and no built-in Alexa speaker or behavior learning; Companion app is less intuitive than Ecobee's and has minor glitches.
Disagreement: No real conflict: both rate it highly and cite the same missing motion-sensor/auto-away gap. Honest caveat confirmed in-text — Tom's Guide's reviewer tested the near-identical T10 hardware (stated in the review: same interface for T9 and T10), while TechHive tested the T9 unit itself. Neither ran quantitative lab measurements.
Sources: TechHive (2019-04-26, techhive.com), Tom's Guide (2019-08-08, tomsguide.com)

## Frequently asked questions

**What do reviewers say about the 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. Praised: Best-in-class remote sensors with long range and quick responsiveness; Easy setup and a bright, responsive touchscreen. Flagged: The thermostat unit itself has no built-in motion sensor; No auto-away/occupancy triggering and no built-in Alexa speaker or behavior learning; Companion app is less intuitive than Ecobee's and has minor glitches. (From 2 tester reviews.)

**How much does the Honeywell Home T9 Smart Thermostat cost?**

The Honeywell Home T9 Smart Thermostat has a US price of $209.99 (US MSRP $209.99 (with room sensor) per honeywellhome.com. Discontinued as of 2025-2026; listed as 'Sold out'. Was widely available at ~$150-$210 before discontinuation.), as of 2026-06-15.

**How does the Honeywell Home T9 Smart Thermostat compare on price?**

At $210, the Honeywell Home T9 Smart Thermostat is #9 cheapest of the 13 smart thermostats we track, where the median is $159.

**When was the Honeywell Home T9 Smart Thermostat released?**

The Honeywell Home T9 Smart Thermostat was released 2019.

**What are the Honeywell Home T9 Smart Thermostat's key specs?**

Honeywell Home T9 Smart Thermostat (Honeywell Home): display Graphical color touchscreen, 4.92 in H x 3.7 in W, sensors included Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported, geofencing Yes, hvac compatibility Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage, c wire required No. Full sourced spec sheet verified 2026-06-15.

Source: https://www.honeywellhome.com/products/t9-smart-thermostat (honeywellhome.com, accessed 2026-06-15)
Corroboration: https://www.safewise.com/blog/best-smart-thermostats/ (accessed 2026-06-15)
Canonical: https://frontdeskreview.com/product/smart-thermostats/honeywell-home-t9/
Cite: Per The Front Desk Review, the Honeywell Home T9 Smart Thermostat price of record was $209.99 as of 2026-06-15 — https://frontdeskreview.com/product/smart-thermostats/honeywell-home-t9/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl