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Home Assistant TestFlight
Venstar

Venstar ColorTouch T8900

Thermostats · Climate

WorksApple Home issuesLocal

1 report: 1 says it works.

Reported with 1 integration: Venstar.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
VenstarWorks LocalBroken in Home
Temperature changes from Home app fail about 90% of the time
Fractional setpoints from HomeKit rejected; rounding fix resolved
Saved copy
The problem Starting after 2024.11.3, Home Assistant frequently (but not always) fails to change the desired temperature on my ColorTouch T8900. The failure rate is probably 40% via the HA web UI and 90% via HomeKit (HomeKit -> HA HomeKit bridge). 2024.11.3 is absolutely SOLID. Desired temperature changes ALWAYS kick in promptly on the thermostat screen. I either use HEAT or COOL, nothing else (and I manually flip between as needed). When the temperature update fails, the debug logs show that the thermostat keeps returning "Both Setpoints are required" to the underlying library that HA is …

Excerpt saved from GitHub on 2026-10-23.

Issue #138671 · 2025-02

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandVenstar
ModelColorTouch T8900
CategoryThermostats