Abstract: A regenerative heating apparatus includes a radiating container and an adsorbent contained in the container. The adsorbent adsorbs vapor to generate heat when touched by the vapor, and releases the adsorbed vapor when heated. A heater for heating the adsorbent is disposed in the container. The vapor released from the adsorbent is condensed by a condensor and then fed into a liquid tank, thereby a dried adsorbent is produced. In a heating operation, the liquid in the tank is fed to an evaporator by a pump and evaporated thereby. The resultant vapor is fed to the dried adsorbent, and the adsorbent adsorbs the vapor to generate heat, thereby heating air around the container.