# Amazon Smart Thermostat vs Honeywell Home T9 Smart Thermostat: specs and price compared

A sourced, side-by-side comparison of the Amazon Smart Thermostat (Amazon) and Honeywell Home T9 Smart Thermostat (Honeywell Home) among smart thermostats. Amazon Smart Thermostat is the cheaper of the two at $59.99.

## Side by side

| Spec | Amazon Smart Thermostat | Honeywell Home T9 Smart Thermostat |
| --- | --- | --- |
| US price | $59.99 | $209.99 |
| Brand | Amazon | Honeywell Home |
| Released | 2021 | 2019 |
| Display | Basic segmented LED/LCD display; no color touchscreen | Graphical color touchscreen, 4.92 in H x 3.7 in W |
| Sensors included | Temperature plus indoor humidity sensor (humidity reported in Alexa app, not shown on the on-unit display); no occupancy sensor, no remote sensor support | Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported |
| Geofencing | Yes | Yes |
| Hvac compatibility | Low-voltage 24V systems (forced air gas/oil/electric, heat pumps); single-stage systems; does not support ACC-/ACC+ terminals, dual-band Wi-Fi only on 2.4 GHz | Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage |
| C wire required | No | No |
| Voice assistants | Amazon Alexa only (requires separate Echo device) | Amazon Alexa, Google Assistant, Apple HomeKit, Microsoft Cortana, Samsung SmartThings, IFTTT, Ring |
| Energy reports | Yes | Yes |

## Key differences

- Display: Amazon Smart Thermostat Basic segmented LED/LCD display; no color touchscreen vs Honeywell Home T9 Smart Thermostat Graphical color touchscreen, 4.92 in H x 3.7 in W
- Sensors included: Amazon Smart Thermostat Temperature plus indoor humidity sensor (humidity reported in Alexa app, not shown on the on-unit display); no occupancy sensor, no remote sensor support vs Honeywell Home T9 Smart Thermostat Includes one wireless SmartRoom sensor (temperature + humidity); up to 20 additional SmartRoom sensors supported
- Hvac compatibility: Amazon Smart Thermostat Low-voltage 24V systems (forced air gas/oil/electric, heat pumps); single-stage systems; does not support ACC-/ACC+ terminals, dual-band Wi-Fi only on 2.4 GHz vs Honeywell Home T9 Smart Thermostat Up to 2H/2C conventional systems; up to 3H/2C heat pump systems; 24V low-voltage
- Voice assistants: Amazon Smart Thermostat Amazon Alexa only (requires separate Echo device) vs Honeywell Home T9 Smart Thermostat Amazon Alexa, Google Assistant, Apple HomeKit, Microsoft Cortana, Samsung SmartThings, IFTTT, Ring

## What reviewers say

**Amazon Smart Thermostat** — Three whitelisted outlets reviewed the ~$60 Amazon Smart Thermostat in 2021-2022 and all rate it the best-value smart thermostat. Tom's Guide and Reviewed/USA Today are hands-on reviews (Reviewed wired it to a test rig); TechRadar is a 'should I buy' buying-advice piece with no hands-on testing. None report any lab-measured numbers (all measured arrays empty). The one universal caveat is that the thermostat is Alexa-only. All nine quotes were verified as literal substrings of the fetched pages. (3 sourced reviews.)

**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.)

## Sources

- Amazon Smart Thermostat: https://www.safewise.com/blog/best-smart-thermostats/ (safewise.com, verified 2026-06-15)
- Honeywell Home T9 Smart Thermostat: https://www.honeywellhome.com/products/t9-smart-thermostat (honeywellhome.com, verified 2026-06-15)

Canonical: https://frontdeskreview.com/gear/smart-thermostats/amazon-smart-thermostat-vs-honeywell-home-t9/
Cite: Per The Front Desk Review, Amazon Smart Thermostat ($59.99) vs Honeywell Home T9 Smart Thermostat ($209.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/smart-thermostats/amazon-smart-thermostat-vs-honeywell-home-t9/
License: CC BY 4.0.