Mister Thermostat

Mister Thermostat turns any combination of sensors and actuators into a smart, precise, and fully customizable climate system. If your devices don’t behave the way you want… now they will. Why use it - Turn simple devices into a complete HVAC system - Add advanced logic missing from physical thermostats - Automatically manage heating, cooling, and fan - Improve comfort and efficiency with minimal setup What you can do - Create advanced virtual thermostats - Use multiple sensors for accurate temperature - Control heating, cooling, and ventilation - Enable true intelligent auto mode - Automatically turn off when windows are open - Sync real and virtual devices NEW: TVR Virtual Thermostat - Designed for radiator valves (TRV / TVR) - Heating-only logic (no cooling modes) - No thermostat modes (heat/cool/auto) → simplified control - Direct temperature control with min/max limits - Optional fan control (heating only) - Window/door open behavior with configurable fallback temperature - Full synchronization with real thermostatic valves - Ideal for systems without native thermostat modes External sensor compensation (TVR) When using an external temperature sensor together with a thermostatic radiator valve (TRV), there can be a mismatch between the real room temperature and the temperature measured by the valve. Mister Thermostat introduces dynamic setpoint compensation: - When heating is required, the setpoint sent to the valve is adjusted based on the difference between the TRV temperature and the room temperature - This ensures the valve opens correctly even if its internal sensor is affected by the radiator - When heating is not required, the valve is set to its minimum setpoint to ensure proper closure This approach turns the TRV into a true actuator controlled by the virtual thermostat, improving accuracy and stability. Powerful scheduler Everything is managed from the app Settings: - Full weekly scheduling - Custom time slots - Different temperatures throughout the day - Multi-room support No limits. No complexity. Schedule control via device You can now control schedules directly from Homey as if they were devices. - Create a "Schedule Switch" device - Select an existing schedule during pairing - The device is automatically named after the selected schedule Behavior: - ON → the schedule is enabled - OFF → the schedule is disabled - The device always stays in sync with the real schedule state Benefits: - Enable/disable schedules via Flows - Quick control from Homey dashboard - Perfect for scenarios like “Home/Away” or “Manual/Auto” How it works 1. Add a “Virtual Thermostat” or “TVR Virtual Thermostat” 2. Select sensors and actuators 3. Configure behavior 4. Set schedules in Settings Done. Result - Stable temperature - Reliable automation - Professional-level control