Enhance control over your heating or HVAC system with the B‑18 Heating Switch Knob, a high‑quality replacement or spare knob designed to provide intuitive, reliable operation for temperature and heating-mode selection. This knob allows users to smoothly switch between heating modes or adjust heat output settings -making it ideal for appliances like heaters, dehumidifiers with heating functions, or ventilation systems where controlled heating and airflow are needed.