Forced air

Forced air is a way of moving air around your house using a special machine called a furnace. Think of the furnace like a giant fan that blows warm air through special vents in your home. This warm air can help keep you cozy in the winter and cool in the summer. It's like a magic wind that helps control the temperature inside your house. The furnace runs on fuel like propane or gas, and it heats up the air using something called a heat exchanger. Then it uses the fan to push the warm air through ducts in your walls and ceilings to different rooms in your house. That's why you might see little grates or vents in various places around your home - that's where the warm air comes out. So basically, forced air is a way of making sure that the air in your house is just the right temperature all year round. Cool, right?