Does this mean I canât ever say âciao?â Of course the answer to this is no. Youâll hear ciao being said all over Italy â itâs an incredibly common greeting throughout the country. But if youâre paying closer attention, youâll see that itâs almost always used between people who know one another or are in the same peer group.
Your hvac duct system is the heart of your home's heating and cooling system. Without a healthy system you could be wasting a lot of money. Like the human body, if the heart isn't healthy you are in trouble. A duct system provides a controlled path for air flow throughout the home.he two main types of supply systems are extended plenum and central plenum. A central plenum system is a system where all of the branch ducts start at the same location called a plenum. The extended plenum system consists of a supply air plenum which is connected to the outlet of the hvac equipment.
Supply Air Plenums. 1  These supply air plenums are sheet metal boxes that attach to the outlet of a furnace or air handler and are used as a central manifold for other ductwork to connect to. 2  As the air blows from the furnace or air handler, it flows through the supply plenum and any ductwork attached to it. These return air plenums are the ducting that attach to a furnace for the return air to flow through, and are used as a central manifold for other return air ducting. 2  These sheet metal transition kits are used to make a custom fabricated duct to connect a new furnace or air hander to existing ductwork.