What Does an HVAC System Do?
At the most basic level, an HVAC system takes in air, cools or heats that air, and blows it into an indoor space, according to the American Society of Heating, Refrigerating and Air-Conditioning Engineers. That space could be a specific room or an entire building or structure, such as a house, office, school, airport, or even a submarine. An individual component of an HVAC system may serve dual purposes. For example, your home could have a separate air conditioner and furnace, or a heat pump for both cooling and heating. At the most basic level, an HVAC system takes in air, cools or heats that air, and blows it into an indoor space. In addition to moving air and making it comfortable inside, HVAC systems can improve the air by drawing it through filters that remove dust, particles, spores, bacteria, and viruses. Whole-home humidifiers and dehumidifiers can add or remove humidity to keep the dew point of your home at an ideal level. This can make your home feel cooler without having to run a cooling system. All of these components link to a conventional or internet-connected (smart) thermostat. Depending on the sophistication of your control system, you may be able to program your HVAC equipment through an app to make small changes that help each component run at its peak. Smart thermostats can also reduce the overall costs of heating and cooling your home because they help maintain the temperature within a designated range.
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