What is an HVAC System and How Does it Work?

HVAC means heating, ventilation, and air conditioning. These systems are used to heat and cool residential and commercial buildings. This system uses fresh air from outside to ensure high indoor air quality. Hire skilled HVAC contractors at https://www.fletchersengineering.co.uk/hvac-contractors/ in Manchester to install steelwork and pipework.

V in HVAC or ventilation is the process of replacing or exchanging air in a space. It ensures better indoor air quality and includes the removal of moisture, smoke, odors, heat, dust, airborne bacteria, carbon dioxide, and other gases, as well as temperature control and oxygen replenishment.

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How the HVAC system works:

The three main functions of an HVAC system are interconnected, especially when they provide acceptable indoor air quality and thermal comfort.  

  • Recirculating System – With the help of fans, the recirculation system draws hot or cold air and forces it through metal ducts. Depending on whether you're using an air conditioner or a stove, warm air is routed through one set of ducts, and cold air is routed through another.

  • Gravity System – The gravity system works on the principle that cold air sinks while warm air rises. Therefore, the gravity system cannot be used in conjunction with air conditioning.

  • Radiation System – The radiation system also has the same problem as the gravity system. They cannot be used in conjunction with air conditioners. 

It's important to understand the various components of the HVAC system so you can understand how they work together.