Hot food holding equipment tends to have two general applications: back of the house and merchandising holding.
Back–of-the-house hot holding equipment tends to consist of full- and half-sized cabinets and drawer warmers. Merchandise hot holding equipment keep items at the point of service. Some of the more common pieces of equipment in this category include four-sided glass humidified cabinets, sandwich slides and even heated wells for buffets.
Most hot food holding units operate on 120V and can require a decent amount of electricity to keep them holding food at the right temperature.