A 200-liter heat pump water heater is an energy-efficient appliance designed to heat water by transferring heat from the surrounding air to the water. Unlike traditional water heaters that rely on electrical resistance or direct gas combustion, a heat pump water heater uses refrigerant and a compressor to extract warmth from the air, even at low temperatures. This innovative system significantly reduces energy consumption, often making it up to three times more efficient than conventional heaters.