hydronic

/haɪˈdrɑnɪk/
adjective
  1. Relating to a heating or cooling system that uses water or another liquid to transfer heat.
    • They installed hydronic radiators in each room for consistent warmth.
    • Hydronic systems are often more energy-efficient than forced-air heating.
    • The new house has a hydronic heating system that circulates warm water through pipes in the floor.