What is air conditioning? Air conditioning (AC) is a system that cools indoor air, removes heat, and often reduces humidity, making a room more comfortable. How does an air conditioner work? An AC does not create cold air. Instead, it removes heat from inside and releases it outside. Step-by-step process: Warm air is pulled in A fan draws warm room air into the AC. Heat is absorbed The air passes over cold coils (called the evaporator). A special fluid (refrigerant) absorbs the heat. Cool air is blown back into the room. Heat is released outside The refrigerant, now hot, goes to the compressor. It moves to the condenser (outside unit). Heat is released into the outside air. Cycle repeats The refrigerant cools down and flows back inside to absorb more heat. Main parts of an air conditioner Evaporator – absorbs heat from indoor air Compressor – pumps and pressurizes the refrigerant Condenser – releases heat outside Refrigerant – carries heat through the system Fan – moves air inside and outside Why does AC reduce humidity? When warm air cools: Water vapor turns into liquid (condensation) Moisture drips away This makes the air feel less sticky and more comfortable Types of air conditioners Window AC – one unit in a window Split AC – indoor + outdoor units (very common) Central AC – cools an entire building Portable AC – movable, less powerful

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