Ключевые слова: apartment, banknote, bill, budget, cash, cold, concept, consumption, cost, costs, crisis, currency, economy, efficiency, efficient, electric, electrical, electricity, energy, euro, europe, european, expense, expensive, fall, gas, heat, heater, heating, home, house, increase, money, pay, paying, payment, power, price, radiator, raise, rising, room, save, saving, system, tax, utility, warm, warmth, winter,