Honeywell Home · Updated June 2026
Honeywell Home T9 Smart Thermostat: price, specs & release date
Honeywell Home T9 Smart Thermostat, released 2019. Every price and spec below is linked to its source and dated — no guesses.
Source: honeywellhome.com verified ✓ corroborated verify in ledger
- Best for Best-in-class remote sensors with long range and quick responsiveness; Easy setup and a bright, responsive touchscreen.
- Skip if The thermostat unit itself has no built-in motion sensor is a dealbreaker.
Is the Honeywell Home T9 Smart Thermostat a good buy?
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.
Evidence of Record
Our dataNo independent lab has measured this product yet. 2 outlets have it on record by mention only, with no hands-on measurements published to weigh its claims against — a gap in the evidence, not a verdict on the product.
Review consensus · sourced & dated
What 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.
Based on 2 reviews · 2019-04-26–2019-08-08
Tested by TechHive, Tom's Guide
Consistently praised
- Best-in-class remote sensors with long range and quick responsiveness · 2 sources
- Easy setup and a bright, responsive touchscreen · 2 sources
Commonly flagged
- The thermostat unit itself has no built-in motion sensor · 2 sources
- No auto-away/occupancy triggering and no built-in Alexa speaker or behavior learning · 2 sources
- Companion app is less intuitive than Ecobee's and has minor glitches · 2 sources
Where reviewers disagree 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.
The sources (2)
Honeywell's sensors, however, are the best we've tested.
These Honeywell Home sensors, which use proprietary radios operating in unlicensed 900MHz radio spectrum, deliver the best range I've seen in this class of product.
Curiously, the thermostat itself does not have a motion sensor.
the T9's sensors, price, and ease of use make it one of the best smart thermostats around.
The sensors were very responsive and picked up movement quickly.
you can't use the sensors to trigger Away or Home status, something you can do with both Ecobee and Nest thermostats.
Specifications
| Price (US) | $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. |
|---|---|
| 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 |
Source: honeywellhome.com (verified 2026-06-15) · corroborated by safewise.com. honeywellhome.com product page confirms $209.99 (with SmartRoom sensor), color touchscreen 4.92x3.7 in, up to 20 sensors, Smart Response + geofencing, up to 3H/2C heat pump / 2H/2C conventional, C-Wire Adapter included in box, Alexa/Google/HomeKit/Cortana/SmartThings/IFTTT/Ring, monthly home energy reports. Product now marked Discontinued/Sold out. SafeWise review corroborates ~$210 price, C-wire adapter included, all voice assistant integrations. Release year estimated 2019 based on product generation timeline.
Is the Honeywell Home T9 Smart Thermostat worth it vs cheaper smart thermostats?
Honeywell Home T9 Smart Thermostat against its closest cheaper and pricier smart thermostats on the specs that matter — every value sourced. See all 13 ranked
| Product | Price | Display | Sensors included | Geofencing | Hvac compatibility | C wire required |
|---|---|---|---|---|---|---|
| Honeywell Home T9 Smart Thermostat this | $209.99 | Graphical color touchscreen, 4.92 in H x 3.7 in W | Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported | Yes | Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage | No |
| ecobee Smart Thermostat Enhanced | $199.99 | 4-inch full-color LCD touchscreen, 540x540 pixels (50% larger than previous ecobee models) | Built-in temperature, humidity, occupancy (radar), proximity; SmartSensor not included (sold separately); up to 20 additional sensors supported | Yes | Most 24VAC systems: conventional 2H/2C, heat pumps 2H/2C + 1 stage AUX, boilers, PTACs, fan coil units (up to 3 fan speeds); Power Extender Kit included | No |
| Honeywell Home X8S Smart Thermostat | $219.99 | 5-inch full-color touchscreen with customizable color and style options | Onboard radar occupancy sensor built-in; wireless room sensor included (varies by variant) or sold separately | Yes | Up to 4H/2C heat pump systems; up to 3H/4C conventional systems; 24V low-voltage; C-wire required | Yes |
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.
Price of record: $209.99 at honeywellhome.com, 2026-06-27. Other retailers may be lower — check the current price:
See Honeywell Home T9 Smart Thermostat on Amazon As an Amazon Associate we earn from qualifying purchases.Similar smart thermostats
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