Hydronics is a heating and cooling system that uses liquid, typically water, as a heat transfer medium. It involves the circulation of heated or chilled water through pipes and radiators or radiant floor systems to regulate temperatures in buildings.

Hydronic systems offer several advantages over traditional air-based systems. They provide even and efficient heat distribution, resulting in improved comfort levels. Hydronic systems are also quieter and require less maintenance compared to forced-air systems.

There are two primary types of hydronic systems: Closed-loop systems, which use a sealed pipe network filled with a water and glycol mixture, and open-loop systems, where water is drawn from an external source and discharged after passing through the hydronic circuit.

Selecting the appropriate hydronic system depends on factors such as the size of the space, desired temperature zones, and energy efficiency requirements. It's recommended to consult with a qualified HVAC professional to determine the optimal system design and equipment selection for your specific needs.