Home owners in locations with milder weather annually can usually use natural ventilation to keep their homes pleasant. Nevertheless, most of them need assistance from our residential heating, ventilation, and air conditioning (HVAC) systems. These important home systems cool or heat the air, filter out pollutants, and manage indoor humidity.
What Is HVAC?
The short form HVAC signifies heating, ventilation, and air conditioning. It’s an umbrella term for all the various kinds of heating and cooling systems home owners use to regulate the temperature and humidity inside their homes. These systems also improve indoor air quality by way of mechanical ventilation and filtration. A lot of common HVAC systems comprise of central A/C units, ductless mini-splits, boilers, and furnaces. HVAC also comprises of large-scale refrigeration in commercial properties.
How Does HVAC Work?
Most typically, HVAC systems are forced-air systems that offer heating and A/C as the air circulates throughout the system. Duct systems, like central A/C, have a central unit that treats the air, and a blower that circulates that air throughout a building’s ductwork and into the primary living area.
Ductless systems such as mini-splits work the same way, however, they transfer air directly to the living area rather than through ductwork. As the air passes through the HVAC system, it might be run through air filters for removing pollutants, other particles or dust.
HVAC System Basics
HVAC systems comprise of many important parts, including the below:
Air Ducts
A dwellings ductwork is a system of ducts that runs throughout the walls and ceiling to transfer cool or warm air from a central HVAC unit to several areas of the building. Ducts are required to be sealed and insulated to give out the highest energy savings. Air ducts are connected to A/C and heating units using specialized ductwork pieces known as plenums. There are typically two plenums in a unit: the supply plenum that manages out-flow and the return plenum that manages in-flow.
Air Handlers
An air handler is the indoor part of a central heating or cooling system that transfers conditioned air throughout the building. It has a blower motor and a fan that transfers cooled or heated air inside the ducting. The handler also pulls in air to be processed. In an A/C unit, the air handler includes the evaporator coils that cools the air as it transfers through.
Condensers
The condenser is the outside unit of a central A/C system. It acts like a heat transfer device for the refrigerant, the chemical used in A/Cs that creates a cooling effect as it vaporizes or expands. The condenser includes condenser coils, in which releases heat from the refrigerant into the outdoor air, and the compressor, in which readies the refrigerant to come back inside and cool more air.
Humidifiers and Dehumidifiers
Subject to your regional climate, the air in your home might be required to be humidified or de-humidified for making your home comfortable and safeguarding it from mildew and mold. Humidifiers add moisture to the air and de-humidifiers eliminate it. A/C systems systematically dehumidify the air; however, you must add an additional humidifier to your HVAC system in drier climates.
Refrigerant
Refrigerant is a liquid that’s utilized to transfer heat from one area to another. In an A/C unit, it pulls heat from the indoor air and forces it outside, cooling the indoors. Freon is one brand of refrigerant, but it’s usually used to refer to all refrigerants the same way that Kleenex stands in for all facial tissues.
Thermostat
A lot of HVAC systems have a mechanism for overseeing the system’s function known as a thermostat. The home owner sets the thermostat to the temperature they want, and the HVAC system operates until the temperature is reached and then turns itself off. This aids in conserving energy and maintains a consistently comfortable temperature.
Vents
An HVAC system’s vents attach ductwork to a building’s exterior and/or interior. Vents serve a lot of purposes, like guaranteeing airflow and drawing in fresh air.
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