RadiantLink supplies radiant floor heating systems for in-floor heating. Radiant heat and radiant heating are terms describing in-floor heat. RadiantLink creates in floor heat by pumping heated water through tubes under the floor. In our unique design, the water for the radiant floor heating system is economically heated by the warm air created by your furnace. No boiler or other water heater required. Our radiant floor heating system is patented and proven in Canadian winters - the most economical option among all radiant floor heating systems.