Apparatus for the exchange of substances and heat for use in the production of steam, for use in cooking and for use in refrigeration; Barbecue smokers; Barbecues and grills; Electric apparatus for making coffee; Electric candles; Electric foods warming units for institutional food services; Fog generators; Fog making machines; Grill accessories, namely, charcoal grill conversion units for converting charcoal grills to electric smokers; Heat guns