Controlled mechanical ventilation: advantages and disadvantages

Controlled mechanical ventilation: advantages and disadvantages

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What are thepros and consof a controlled mechanical ventilation system: expert opinions. Advantages and disadvantages, system related problems.

A plant ofcontrolled mechanical ventilationguarantees you correct air exchange without opening the windows and without heat loss. In this article we will analyze, in detail, what are the pros and conslinked to a controlled ventilation system.

Controlled mechanical ventilation: advantages and disadvantages

Let's start with the advantages:

  1. Improvement of air quality with the elimination of pollutants thanks to specific filtering systems
  2. Elimination of problems related to humidity and condensation, even with simple mechanical ventilation
  3. Improvement of the building's energy efficiency thanks to ventilation systems with heat recovery
  4. Protection from external noise while maintaining the acoustic insulation offered by the windows

Let's analyze theadvantages and disadvantagesexploiting the opinions of experts in the field of "forced ventilation". Let's analyze again iadvantageswhich may also vary according to the type of system installed.

1. The quality of the air and the healthiness of the home environment improves thanks to specific filters installed in the forced mechanical ventilation unit. If the system is equipped with filters and sensors, it can analyze the amount of VOC and CO2 and, if these values ​​exceed the maximum levels, take action to introduce healthy air into the house.

2. Even the simplest models can maintain healthy air and solve problems related to humidity and condensation. The market, for the most demanding users, offers models that can detect the amount of humidity (humidity sensors) so as to offer targeted replacements, increasing the operating speed. The problem ofhumidityit can also be solved thanks to the basic ventilation systems, without sensors.

3. The double thermodynamic flow ventilation it allows for air renewal and thermal comfort: in practice, the unit preserves the energy investments made by the heating system or air conditioner to cool the rooms. How does it work? Theremechanical ventilationhas a heat exchanger that recovers thermal energy from the outgoing air to transfer it to the clean incoming air. The ventilation system with heat recovery is very useful for improving the thermal performance of the building.

4. Another often underestimated factor related to the use ofcontrolled ventilation systemsis the acoustic stress. Those who live in urban environments know how annoying an open window can be. A controlled ventilation system protects the home from noise pollution as well as from environmental pollution.

Here are the problems related to installation and thedisadvantagesof an air ventilation system. According toopinionsof experts, the disadvantages would be related to technical factors that would lead to an increase in the cost of installation.

This, more than among the "versus"Should be considered as an observation: it costs less to design and install a controlled ventilation system in a house under construction than in an existing building unit.

  1. The purchase and installation costs can be prohibitive.
  2. In the case of pre-existing building where it is necessary to build a false ceiling to hide the pipes.
  3. An accurate analysis is required before purchase or installation, a poorly sized system can be almost useless. This is why DIY is impossible and you need to use an expert.
  4. In houses already built, the system must be adapted to the existing structure and some problemsmay be related to the inability to pass the pipes in certain points. This is why careful preliminary design is required.
  5. To eliminate the problems related to the pipes, it is possible to opt for a decetralized system (no ducts are required) but in this case, more careful maintenance must be included among the disadvantages.
  6. Pre-existing homes need to have enough space to accommodate the wall or ceiling ducts.

As is clear, iadvantagesare numerous while alldisadvantagesare linked to constraints imposed by the installation of the air ducts of these systems.

Centralized controlled mechanical ventilation

One plantcentralized it consists of a single machine that provides ventilation which is connected to different distributors (delivery and return ducts with nozzle). This plant, among hisadvantages, requires little maintenance but requires many installation constraints because the supply ducts and air vents must reach the different rooms through ad hoc masonry works or false ceilings.

Decentralized controlled mechanical ventilation

This system solves the constraints related to installation: no ducts are required because the units must be placed in different points of the house, installed on the external wall tiles. If on the one hand aproblemstructural, on the other hand, it is important to plan a maintenance plan from the moment of installation. To ensure good hygiene and good air exchange, this system must have high frequency maintenance. It is good to clarify any system maintenance costs with the installer.

You may also be interested in our related article on how controlled mechanical ventilation works.

Video: Volume Control Mode of Mechanical Ventilation (June 2022).