Ключевые слова: background, bank, battery, bills, budget, climate, cold, comfort, concept, control, dollar, domestic, economy, electric, energy, expense, finance, financial, heat, heater, heating, home, hot, house, investment, light, modern, money, object, optimize, pay, payment, pig, piggy, pressure, price, radiator, regulator, save, savings, scarf, season, system, temperature, thermal, utility, wall, warm, white, winter,