Introduction to HVAC: Basic Terminology Explained
Heating, ventilation, and air conditioning (HVAC) problems are a common occurrence for many homeowners. But because the system can be complicated, how it works may be out of the owners’ scope of knowledge. Understanding the terminology associated with these functions can help homeowners successfully communicate any issues related to these functions when speaking to a repair team.
Now, we will explore the terminology used in the HVAC world:
ACH (air changes per hour)
ACH refers to the number of times mechanical or natural ventilation supplies a room with air per hour. Knowing this term can help you pinpoint the problem when discussing any ventilation problems with professionals.
ACH also works with the air handler that supports the movement of air throughout your home. The air handler is often located indoors and controls many components that allow heating and cooling air circulation.
Central air conditioning
As its name suggests, a central air conditioning system is usually located in a primary area of the household and distributes air via ducts to the rest of the dwelling. It extracts heat and dehumidifies a room or entire home. Many residential homes have split air conditioning systems in place. That means there is also an outdoor component that helps draw air into the house.
BTU (British thermal unit)
A BTU is an energy measurement used to identify an HVAC system’s cooling, dehumidifying, or heating rate. One BTU is equal to approximately 1.05 kilojoules.
Ductwork
Ductwork refers to the specialized pipes and tubes installed in homes that are responsible for airflow. These consist of various materials, including galvanized steel, fiberglass, aluminum, polyurethane, and plastic. However, the most commonly used materials are steel and plastic.
Diffuser
A diffuser works in tandem with ductwork. It helps to separate air through the use of vanes going in different directions. The use of a diffuser allows even air distribution throughout the house.
Evaporator coil
An evaporator coil is a component of the AC system found inside an air handler or attached to a furnace. It operates by cooling the refrigerant to absorb heat from the air inside the home.
Furnace
A furnace heats the air in one area of the home and then distributes it everywhere. The most common furnace systems accompany a central air system that heats your home via ductwork and vents.
Heat pump
Contrary to its name, a heat pump works by providing both heating and cooling effects in a home. It absorbs heat from a warm area and releases it into a colder space. This system is suitable for climates where the temperature does not go below zero degrees Fahrenheit.
Split system
Most HVAC systems operate on a split basis between indoors and outdoors. The outdoor elements help to promote cooling and heating, while the indoor device focuses on circulation.
Make your life easier!
Knowing some general HVAC terminology can help you better discuss any issues you may encounter with your system. Speaking to a maintenance specialist can ultimately save time and help solve the problem sooner.
CMB Air is residential heating and cooling installation, service, and repair and company with 15+ years of experience serving Tampa and surrounding areas. If you need a new air conditioner, repair, maintenance or some other service, we can help! Call 813-461-6243 today!
