A fully-functional HVAC system is an integral part of any home. It keeps residents comfortable all year round by controlling the heating, ventilation, and air conditioning of the house. This article talks about the essential parts of the HVAC system and the role they play in keeping the house cool in summer and warm in winter.
Components of the HVAC system
The following are the parts included in the HVAC system:
Thermostat: The thermostat is the part of the system that users interact with. It is usually fitted prominently on an easily accessible wall and maybe programmed automatically or adjusted manually to maintain the desired temperature in the room. Once the ambient temperature gets overly hot or cold, the thermostat will prompt the heat exchanger or the evaporator coil-condensing unit combo to start delivering warmed or cooled air as required.
Furnace: The furnace is a crucial component of the HVAC system. It is also the biggest, needing remarkable space – usually in the cellar, basement, attic, or a customized closet. It heats the supplied air that will be delivered to different parts of the house through the ductwork. Furnaces use various heat sources – combustion (propane, coal, oil, natural gas), heat pump, resistance, or solar energy.
Heat exchanger: This is in the furnace. The heat exchanger turns on when the thermostat activates the furnace to produce heat during winter. It draws in cool air, heats it, and sends it back through the ducts and out the vents.
That is not all…
Evaporator coil: This has a counter function to the heat exchanger. Instead of heating, the evaporator coil cools the air during the summer months.
Condensing unit: This part is attached to the evaporator coil. The unit is fitted outside the home and filled with refrigerant gas. The condensing unit pumps the liquid form of the refrigerant gas to the evaporator coil to be converted into a gas again.
Refrigerant lines: The refrigerant lines transfer the refrigerant material to the condensing unit in gaseous form and transfers it back to the evaporator coil in a liquid state. Refrigerant lines are narrow tubes created from a durable metal such as aluminum or copper to resist cold and heat.
Ductwork: This is the network of ducts that moves warmed or cooled air to different parts of the house. Ducts are usually created from lightweight aluminum. However, materials such as steel, polyurethane, fiberglass, flexible, or fabric can be used to build the ductwork.
Vents: The vent is a rectangular outlet that delivers heated or cooled air from the ductwork to the separate rooms in the house. They are often fabricated from a metal that can withstand both high and low temperatures. They are usually fitted on or near the ceiling with a front end of angled slats called vents. The vents deliver the treated air toward the occupants of the room. Sometimes it is designed for manual control or closing to regulate the amount of heating or cooling and the distribution of air in the room.
The different components of the HVAC system play an important role in the efficiency of the system.
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