Climate Advisor

A Home Assistant integration that runs your thermostat from the weather forecast, your schedule, occupancy and your door/window sensors, so the house stays comfortable without wasted heating or cooling. It learns how your home and thermostat behave over time.

Requires Home Assistant 2026.3 or newer. Available in the HACS default store.

• Plans each day from the forecast. Each morning it classifies the day (hot / warm / mild / cool / cold) and the trend into tomorrow, then sends a short briefing with what it will do and what you can…
• Holds a comfort band, not a schedule of writes. It sets one heat or cool setpoint at the edge of your comfort range and lets the thermostat hold it. It switches between heat and cool as the house…
• Respects your changes. A change you make at the thermostat is kept for a grace period (30 min by default) before Climate Advisor resumes its plan.
• Handles doors and windows. Once a door or window has been open past its delay (10 min by default), heating and cooling pause (or ventilation starts, see below). They resume when it closes. A sensor…
• Uses outside air. When outdoor air helps, it runs natural ventilation through a whole-house fan or the thermostat's blower instead of the AC.
• Optional extras:
• a bedroom sensor at night (see below);
• away / vacation / guest occupancy toggles;
• time-of-use pre-conditioning ahead of high-cost periods;