Exhaust and supply systems
Exhaust and supply systems are essential components of modern ventilation solutions, designed to maintain optimal indoor air quality and comfort by managing the flow of air in and out of buildings. These systems work together to ensure that fresh air is supplied to indoor spaces while stale air is effectively removed.
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At Airios we offer a range of options to meet your ventilation needs. Our solutions are designed to create a healthy and comfortable indoor climate, regardless of the specific requirements of your home or building. Think of advanced ventilation controls, zoning, heat recovery, smart sensors and integration with HVAC systems.
Exhaust and supply systems
Exhaust ventilation systems work by depressurizing the building. By reducing the inside air pressure below the outdoor air pressure, they extract indoor air from a house while make-up air infiltrates through leaks in the building shell and through intentional, passive vents.
Exhaust ventilation systems are most applicable in cold climates. In climates with warm, humid summers, depressurization can draw moist air into building wall cavities, where it may condense and cause moisture damage. The systems are relatively simple and inexpensive to install. Typically, an exhaust ventilation system is composed of a single fan connected to a centrally located, single exhaust point in the house.
A preferable option is to connect the fan to ducts from several rooms (especially rooms where pollutants tend to be generated, such as bathrooms). Adjustable, passive vents through windows or walls can be installed to introduce fresh air rather than rely on leaks in the building envelope. However, passive vents may be ineffective because larger pressure differences than those induced by the ventilation fan may be needed for them to work properly.
Spot ventilation exhaust fans installed in the bathroom but operated continuously represent an exhaust ventilation system in its simplest form.
Supply ventilation systems work by pressurizing the building. They use a fan to force outside air into the building while air leaks out of the building through holes in the shell, bath- and range-fan ducts, and intentional vents.
As with exhaust ventilation systems, supply ventilation systems are relatively simple and inexpensive to install. A typical system has a fan and duct system that introduces fresh air into usually one—but preferably several—rooms that residents occupy most (for example, bedrooms, living room, kitchen). This system may include adjustable window or wall vents in other rooms.
Supply ventilation systems allow better control of the air that enters the house than do exhaust ventilation systems. By pressurizing the house, these systems discourage the entry of pollutants from outside and prevent backdrafting of combustion gases from fireplaces and appliances. They also allow air introduced into the house to be filtered to remove pollen and dust or to be dehumidified.
Like exhaust ventilation systems, supply ventilation systems do not temper or remove moisture from the air before it enters the house. Thus, they may contribute to higher heating and cooling costs compared with energy recovery ventilation systems. Because air is introduced in the house at discrete locations, outdoor air may need to be mixed with indoor air before delivery to avoid cold air drafts in winter.
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Discover Our Ventilation Solutions
At Airios, we offer a wide range of products to meet all your ventilation needs. Whether you are looking for advanced ventilation controls, zoning solutions, heat recovery systems, or smart sensors, we have the right solution for you.
Visit our product page for a complete overview of our innovative ventilation products and discover how we can help you create a healthy and comfortable indoor climate.