Water Baseboard System. Similar to radiant heat, this system uses water heated by a boiler to heat ae by a combination of radiation and convection. Distribution. water heated by boiler and piped to “fin .” baseboard units mounted along walls. The fins increase the surface area of heat dissipation making the unit more efficient..This baseboard category contains the parts and materials to create a successful baseboard heating system, or fix an existing baseboard heater system. Some of the items are baseline baseboard heaters, A baseboard, PEX tubing, and more..The SoftHeat Volt Hydronic Baseboard Heater uses a The SoftHeat Volt Hydronic Baseboard Heater uses a self contained circulating heat transfer fluid to provide steady uniform warmth with longer heat retention greater energy savings and minimal temperature variation..Shop electric baseboard heaters in the portable e heaters section of Lowes.com. Find quality electric baseboard heaters online or in store..