Why are pipes in a heating system insulated?

Pipes in a heating system are insulated to minimize heat loss as hot water or steam travels from the boiler to the radiators or heating elements. Insulation helps maintain the efficiency of the heating system by ensuring that more heat reaches the intended areas, rather than being lost to the surrounding environment. Additionally, it can prevent condensation on cold surfaces, reducing the risk of mold and corrosion. Overall, proper insulation contributes to energy savings and improved comfort in the space being heated.