Compatibility

Compatibility

Candidate: 0.1.0-rc.1 on develop. The RC guide identifies the package and candidate checks. The table below records the beta.4 baseline; it is not an RC soak result. A minimum supported Home Assistant version and a broader support range have not yet been established.

Environment or feature	Coverage
Home Assistant 2026.10.0 · VT 10.5.1	Dedicated test environment with Generic Thermostat, VT switch, climate, valve and combined climate/valve configurations using inert outputs
Home Assistant 2026.10.4 · VT 10.5.1	Passive frontend trial alongside existing TI cards; beta.4 readings, health LED and provider details checked
Installation and rollback	Manual resource installation, removal/reinstallation, update, rollback and reapplication exercised in the test environment
VT lock without a code	Deliberate native Lock/Unlock and provider automatic relocking checked on an inert fixture
VT lock code/error paths	Synthetic tests only; see provider logging limitation
VT response arc	Synthetic positive, restricted, mismatching, stale and expired evidence; real HA checks cover unmapped configurations
Phone, tablet and desktop widths	Responsive Chromium fixtures, keyboard and reduced-motion checks; physical devices and Companion apps remain unverified
HACS	Installation, updates and catalogue inclusion are unverified
Other climate integrations	Provisional; require integration-specific checks
Physical heating response	Unverified; activity and valve readings do not prove heat delivery

Beta.4 passed 135 unit tests, 81 browser tests and 5 packaging tests. Coverage includes configuration preservation, provider identity and readiness, command races, no replay after reconnect, escaped rendering and degraded observations. The built module's health checks retain amber for incomplete observations and red for disconnected or unavailable thermostats. A completed scoped security review reported no findings.

These results apply to the recorded versions and scenarios. They do not establish compatibility with every thermostat, browser or Home Assistant release.

RC.1 changes release identity and packaging; it does not change thermostat commands, provider interpretation, response-arc rules or the health LED. A timed RC observation must record its own build identity, start and checkpoints. Historical beta checks do not count as an RC soak.

Report a compatibility issue

Include your TI, Home Assistant, provider and browser/Companion versions, installation method, a minimal redacted card configuration and reproduction steps. State whether the issue affects rendering, controls, provider observations or resource loading. Use the issue forms.