Inanormallyinsulatedhouse,withaproperlyfunctioningunderfloorheatingsystem,thetemperatureofthefloorsurfaceisgenerally2Chigherthantheroomtemperature.Inahotwaterunderfloorheatingsystem,theflowtemperatureisusually712Chigherthanthefloors'surfacetemperatureandmusttherefore,neverexceed39C.
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In a normally insulated house, with a properly functioning underfloor heating system, the temperature of the floor surface is generally 2C higher than the room temperature. In a hot water underfloor heating system, the flow temperature is usually 712C higher than the floors' surface temperature and must therefore, never exceed 39C.