associated with these vibrations and further increase the efficiency of the heating element by providing insulation between the heating element 16 and its associated support structure to this end the heating unit assembly 10 including the heating element 16 grid 18 and support pan 20 are thermally isolated from the cooktop 12 by the use of resilient thermally insulating isolating elements in carrying out the present invention the resilient thermally insulating material employed was 304 stainless astm in a woven or spun state having a thickness of between 0 0625 34 and 0 125 34 the material may be obtained from several suppliers one being metex co under the item number dev 13712 it should be noted however that other materials may be available to accomplish the desired results the resilient thermally insulating material used must also be immune to damage by acid and other materials and temperature of approximately 1400 u00b0 f that may be encountered during the cooking procedure since the vibrations are transmitted through the range it may be necessary to apply the isolating means at several points in the structure however it should be noted that the higher frequency vibrations and accordingly the most objectionable are those generated between the heating element 16 and the grid arms 30 the resilient thermally insulating means employed includes a first resilient thermally insulating element 40 that as shown in fig2 is positioned between each pass or convolution of the heating element 16 and the point of contact on the upper edge portion of each of the arms 30 the element 40 in this position may be a thin strip having substantially the same dimension as the width of the arm 30 and may be secured to the arm by.