Nest Learning Thermostat (4th gen) vs Honeywell Home T5 Smart Thermostat

Nest Learning Thermostat (4th gen), with an included temperature sensor, self-learning schedules with suggestions, occupancy and humidity sensing, dual-band Wi-Fi and Matter. Honeywell Home T5 Smart Thermostat wins on price and adds on-device voice control plus Apple HomeKit support.

Nest Learning Thermostat (4th gen) ships with a Nest temperature sensor so it can prioritise or balance another room. Honeywell Home T5 Smart Thermostat does not support external sensors at all, so it only ever measures the temperature at the thermostat.

Honeywell Home T5 Smart Thermostat does, alongside Alexa and Google Assistant. Nest Learning Thermostat (4th gen) has no HomeKit support, covering Google Home, Alexa, SmartThings, IFTTT and Matter, and is controlled only through the Google Home app.

Nest Learning Thermostat (4th gen) learns the temperatures you like and when, then suggests tweaks you can accept in the app, and uses presence for away mode. Honeywell Home T5 Smart Thermostat uses a 7-day schedule you define plus geofenced Auto Home and Away with monthly energy reports.

Nest Learning Thermostat (4th gen) is designed for North American HVAC and can fail to power without a C wire in cases where older Nest models worked, so confirm your wiring. Honeywell Home T5 Smart Thermostat also needs a C wire or power adapter.

Buyers who want Apple HomeKit, a big readable touchscreen, geofencing and HVAC maintenance reminders at a much lower price, in a home with even temperatures. For learning schedules, a bundled room sensor and Matter, Nest Learning Thermostat (4th gen) is the more advanced option.