I. "Bottle-type water dispenser" means a water dispenser that uses a bottle or reservoir as the source of potable water.II. "Department" means the department of energy.III. "Commercial hot food holding cabinet" means a heated, fully-enclosed compartment with one or more solid or glass doors that are designed to maintain the temperature of hot food that has been cooked in a separate appliance. "Commercial hot food holding cabinet" does not include heated glass merchandizing cabinets, drawer warmers, or cook-and-hold appliances.IV. "Electricity ratio" means the ratio of furnace electricity use to total furnace energy use. Electricity ratio = (3.412*EAE)/(1000*EF + 3.412*EAE) where EAE (average annual auxiliary electrical consumption) and EF (average annual fuel energy consumption) are defined in Appendix N to subpart B of part 430 of title 10 of the Code of Federal Regulations and EF is expressed in millions of BTUs per year.V. "Residential furnace" means a self-contained space heater designed to supply heated air through ducts of more than 10 inches length and which utilizes only single-phase electric current, or single-phase electric current or DC current in conjunction with natural gas, propane, or home heating oil, and which: (a) Is designed to be the principle heating source for the living space of one or more residences;(b) Is not contained within the same cabinet with a central air conditioner whose rated cooling capacity is above 65,000 BTU per hour; and(c) Has a heat input rate of less than 225,000 BTU per hour.VI. "Water dispenser" means a factory-made assembly that mechanically cools and heats potable water and that dispenses the cooled or heated water by integral or remote means.