Amazon Smart Thermostat vs Honeywell Home T5 Smart Thermostat

Honeywell Home T5 Smart Thermostat, which supports Alexa, Google Assistant and Apple HomeKit, adds voice control, temperature alerts, a system health monitor and a 2 year warranty, at a lower price. Amazon Smart Thermostat includes a C-wire adapter and trim plate but is Alexa-only.

Honeywell Home T5 Smart Thermostat works with Alexa, Google Assistant and Apple HomeKit. Amazon Smart Thermostat supports Alexa alone, with no Google Home, HomeKit, SmartThings, Home Assistant, IFTTT or Matter, which is the single biggest limitation on it.

No. Neither Honeywell Home T5 Smart Thermostat nor Amazon Smart Thermostat accepts external temperature sensors, so both measure only where they are mounted. If uneven rooms are the problem, a model with room sensors is the one to look at.

Honeywell Home T5 Smart Thermostat has a 4.95 inch high-contrast touchscreen showing temperature and time, readable across a room. Amazon Smart Thermostat uses a small monochrome LED panel with no touch input, showing temperature only, without time or weather.

Amazon Smart Thermostat includes a C-wire adapter and a trim plate, which covers the most common wiring problem. Honeywell Home T5 Smart Thermostat requires a C wire or power adapter and includes the UWP mounting system but no cover plate, though replacing an older Honeywell is usually quick.

Alexa-only households that want the lowest entry price and value the included C-wire adapter, and who do not need alerts, humidity sensing or room sensors. For assistant flexibility, a proper touchscreen and maintenance reminders, Honeywell Home T5 Smart Thermostat is the better purchase.