Ventilation Systems

Types Of Ventilation Systems In Homes And Buildings

Ventilation in buildings and homes is essential to guarantee maximum livability and comfort, thus achieving the best conditions for housing construction companies Lahore and house construction contractors in Lahore give major priority to the ventilation system.
A while ago Natural ventilation was used to be the most common method of allowing fresh outdoor air to replace indoor air in a home. But, today it’s usually not the best ventilation strategy, especially for homes that are properly air sealed for energy efficiency. Natural ventilation is not enough because usually, it doesn’t provide adequate moisture control.
In this blog we try to discuss the main types of ventilation systems, so you can find the ideal ventilation system for your home or building.

1. Exhaust Ventilation Systems:

Exhaust ventilation work by depressurizing the building. By reducing the inside air pressure increase the outdoor air pressure, they extract indoor air from a house or building while make-up air infiltrates through leaks in the building shell and through intentional, passive vents.
Exhaust ventilation systems are usually most applicable in cold climates. In hot climates with warm, humid summers, depressurization can draw moist air into building wall cavities, where it may condense and cause moisture damage.
Exhaust ventilation systems are relatively very simple and inexpensive to install. It usually composed of a single fan connected to a centrally located, single exhaust point.

2. Supply Ventilation Systems:

Supply ventilation work by pressurizing the building. Supply ventilation systems 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.
Supply ventilation systems are relatively simple and inexpensive to install as with the exhaust ventilation systems. Usually, a typical ventilation 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).

Supply ventilation systems by pressurizing the house discourage the entry of pollutants from outside and prevent back-drafting of combustion gases from fireplaces and appliances. It allows better control of the air that enters the house than do exhaust ventilation systems.

Supply ventilation systems also work best in hot or mixed climates because they pressurize the house, they have the potential to cause moisture problems in cold climates.

3. Balanced Ventilation Systems:

Instead of exhaust and supply, ventilation balanced ventilation system usually has two fans and two duct systems. If a balanced ventilation system is properly designed and installed then no need to pressurize or depressurize a house because it introduces and exhausts approximately equal quantities of fresh outside air and polluted inside air, respectively.
Usually, a typical balanced ventilation system is designed to supply fresh air to bedrooms and common rooms where people spend the most time. It also exhausts air from those rooms where moisture and pollutants are most often generated.

Balanced ventilation systems do not temper or remove moisture from the air before it enters the house like both supply and exhaust ventilation systems,

Balanced ventilation systems are useful for all climates; however, because a balanced ventilation system requires two duct and fan systems, they are usually more expensive to operate and install than supply or exhaust systems.

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