Best Smart Thermostats · Honeywell Home · Updated June 2026

Honeywell Home T9 Smart Thermostat: specs and price (2026)

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.). Below is its full, sourced spec sheet — every value links to the source and the date we captured it.

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
release	2019

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.

Frequently asked questions

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.

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.