What is EMF and what relevance does it have to electric floor warming?
EMF stands for ElectroMagnetic Field and it is a byproduct of alternating electric current passing through wires and appliances. Human exposure to ambient levels of EMF is the subject of continuing scientific scrutiny and the results are a matter of public record. For those who are concerned, the Federal a Government recommends minimizing exposure to EMF’s in the home and workplace. Elevated EMF levels can also interfere with electronic devices including computer screens and is usually included on lists of causes for “sick building syndrome”. There is no practical technology to completely shield an electric heating element in order to minimize EMF. The only viable approach is to spiral two wires side by side so the fields cancel each other. This approach years ago and was granted U.S. patent number 6,303,905. The EMF generated at floor level by radiant floor heating systems that use only one wire is many times normal ambient levels. Using dual wires for EMF cancellation is more expensi
