Ключевые слова: appliance, bill, coin, cold, comfort, concepts, cool, costs, cozy, december, degree, dollar, domestic, economic, electric, electricity, energy, expensive, floor, freezing, heat, heater, heating, holding, home, hot, house, household, hundred, increase, indoor, industry, metal, money, oil, power, radiator, raise, regulator, room, season, switch, technology, temperature, value, warm, warmth, weather, winter,