Complete thermostat assembly for the Blacksmith Forge boiler stove. The unit includes both the thermostat body and the plastic control knob. The copper probe sits in the boiler water pocket and the thermostat adjusts the rear air inlet based on water temperature, keeping the boiler output within the set range. A faulty thermostat can cause erratic heat output or prevent the boiler from reaching operating temperature. β Compatible with: Blacksmith Forge boiler stove π§ Specifications Material: Brass and copper probe, plastic knob Weight: 1.0 kg Part type: Thermostat complete (body and knob) The thermostat connects directly to the rear air damper and regulates automatically once installed. Replacing a worn unit helps maintain consistent combustion control and protects both the boiler and connected heating circuit from overheating.