The radiant in-floor heating and snow melting systems manufactured by Danfoss that are designed and supplied by Comfort Radiant provide the most technologically advanced systems available today. We are proud to say that ALL of Danfoss' heating elements produce no EMF's. Their radiant heating products were “green” long before green construction became popular. Electric radiant heating is clean, comfortable and 100% energy efficient where no maintenance is required. Some elements use their EMF shield as their grounding return. Danfoss elements have separate shield and grounding wire.