Ключевые слова: adjusting, banknote, bill, building, cash, central, closeup, cold, concept, consumption, control, cost, currency, economical, economy, efficiency, energy, euro, expense, expensive, finance, frost, gas, heat, heater, heating, high, home, hot, house, low, money, oil, pay, power, price, purse, radiator, reduce, save, saving, season, symbol, temperature, thermal, thermostat, warm, warmth, waste, winter,