Icon drop-in induction cooktops come in 30- and 36-inch sizes with 6-, 7-, 8-, and 10-inch elements. The units’ Infinite cooking system creates heat only after sensing a pan on the surface, the firm says, and the surface responds only to the diameter of the vessel. Other features include Power-Assist, which provides a 25% increase in power to bring large pots to boil faster, and 15 preset touch settings for digital heat control. 877.435.3287. www.electroluxicon.com.