Hydronic systems are heating and cooling systems that use water as a heat transfer medium. They circulate hot or cold water through pipes to radiators, baseboards, or underfloor heating systems, effectively regulating indoor temperatures. This method is energy-efficient and can provide consistent comfort throughout a building. These systems can be powered by various sources, including boilers, heat pumps, or solar thermal systems. Hydronic systems are often preferred for their quiet operation and ability to maintain even temperatures, making them suitable for residential and commercial applications alike.