An HVAC system is essential to ensure that your home remains comfortable throughout the entire year.
To maintain your HVAC system properly, it is necessary to be aware of it’s different parts and know their individual functions in keeping your home cool during the summer and warm in the winter.
1. Thermostat – The most noticeable component of an HVAC system is the thermostat. It is normally positioned in a prominent location inside a room, and it can be adjusted manually or through a preset programmable thermostat. Any unusual changes in temperature will prompt the thermostat to activate the evaporator coil-condensing unit or heat exchanger to compensate for these changes in ambient temperature.
2. Furnace – Besides being the biggest component, the furnace is also an extremely important part of an HVAC system. It is normally positioned in the cellar, attic, basement, or a closet specifically-designed for it. The furnace heats up the air circulated in all the rooms of the house. Four different methods are used in heating up the air – combustion, use of a heat pump, solar energy, or electric resistance. At Air Excellence Heating and Cooling, we offer professional furnace installation and maintenance.
3. Heat exchanger – The heat exchanger is positioned inside the housing of the furnace. It is triggered whenever the thermostat activates the furnace to generate warmer air inside the house. This component basically takes in cool air and warms it up before sending the air back through the vents in the house.
4. Evaporator coil – While the heat exchanger heats air up, the evaporator coil cools air whenever the thermostat requires a lower temperature. It is typically positioned on the exterior on the furnace and functions in the same manner as the radiator of a car does when it produces cool air.
5. Condensing unit – The condensing unit is normally connected by HVAC technicians to the evaporator unit. It is positioned outside the home and serves as the storage for refrigerant gas. Once refrigerant gas is converted into liquid through heat exchange with the air outside, it is sent into the evaporator coil by the condensing unit. The gas is then evaporated and converted into gaseous form. Learn about the importance of cleaning the condenser coils to keep your system running efficiently.
6. Refrigerant lines – Refrigerant lines bring refrigerant material in gaseous form into the condensing unit. It also brings the same material into the evaporator coil as a liquid. These components are slender tubes made from metals that can withstand heat and cold just like aluminum or copper.
7. Ductwork – Ductwork is a set of ducts that bring heated or cooled air into different parts of the house. These are typically made from materials that can be easily installed by HVAC contractors. Some of these ducts are made of flexible plastic, steel, fibre glass, fabric, or polyurethane.
8. Vents – Vents are small outlets from where cool or heated air from ductwork enters the room. These components are made of cold- and heat-resistant metals. They are typically positioned along the ceiling and have angled slats on their cover. Air is guided downward by these slats where the occupants of the home normally stay. They can be closed or opened manually to regulate the volume of cooled or heated air inside the room.
St. Louis HVAC Services
To learn more about your HVAC system and to request HVAC maintenance, call Air Excellence Heating and Cooling at (636) 980-0998.