How are fans used in hydronic heating systems?

In hydronic heating systems, fans are not used to distribute air directly but rather play a crucial role in circulating water through the pipes. This system primarily uses water as the heat-transfer medium, which is heated by a boiler and then circulated through a network of pipes to radiators, baseboards, or underfloor heating elements. The fans help to maintain proper circulation by ensuring that the heated water flows efficiently and evenly reaches the various components throughout the system.

The circulation of water is vital for effective heating, allowing for temperature regulation in different areas of a building. By enabling this water flow, fans help distribute the thermal energy provided by the heated water throughout the space being heated, resulting in a comfortable indoor environment.