Venstar T7900

Yes, have had the t7900 for 2 years. I set it up with a schedule to be fully automatic, switching from heat to cool as it needs to. I use HA to switch it to away mode if everyone leaves, and back to auto when someone gets home. But one could certainly use HA to tweak the temps if needed.

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I use thermostats from Venstar, specifically the T7900 and T2000. They are WiFi based and provide local control. They have a cloud option if you want but I’ve never enabled that and have blocked all network access to their cloud. Everything works perfectly for me.

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

I know a lot of people suggest Ecobee or Honeywell, but I'm a huge fan of our Venstar T7900 unit. It's much more capable than most in my experience (the 7900 can also control a humidifier or dehumidifier if you have it), and has local control via WiFi from within HomeAssistant. They do have an external app for controlling and setting schedules on the unit, but you don't have to use it. Even so, it works well for me. We use integrations to automatically turn off the thermostat if a window or door is left open for more than a couple minutes, and turn it back on when all windows and doors are …

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

I dumped my Nest when google dropped the legacy Nest login support. I tried a Venstar T7900 ($270 Amazon) with WiFi and moved to a Honeywell TH6320ZW2003 T6 Pro Series ($89 Amazon) with Zwave . Venstar has a local REST API, and there is a Home Assistant integration for it. Unfortunately, it does phone home, although that is not required for it to function. You'll need to block it at your router if you don't want 1) it reporting back to the home ship, and 2) auto updating firmware. You have no way of disabling that other than cutting off its access from the internet. Personally, I thought the …

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

The problem I am using a Venstar ColorTouch T7900 thermostat (Firmware version 6.93) with the Venstar and HomeKit Bridge integration. This thermostat model supports the `fan_modes` attributes `on` and `auto`. It does not have an `off` attribute, as this is handled by the `off` state in `hvac_modes.` The issue is that setting `fan_mode` to `auto` causes the fan accessory to appear as ON, even when the `fan_state` is `0`. To reproduce this issue, set the thermostat to cool mode and adjust the temperature above the current room temperature so the equipment is idle. You will notice that the fan …

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