You can now breath clean, healthy air at the right temperature in your own home, thanks to innovative controlled mechanical ventilation systems
- What is meant by controlled mechanical ventilation?
- How mechanical ventilation systems work?
- Controlled mechanical ventilation: advantages
- Types of CMV Systems
- Controlled mechanical ventilation prices
- Factors affecting the final cost
Now more than ever, clean and healthy air is critical in every home, school and work environment. Controlled mechanical ventilation (CMV) is a reliable and effective solution in its own right for improving the safety of indoor environments, ensuring not only a continuous exchange of air but also protection against external agents.
With a state-of-the-art mechanical ventilation system like that of Ercos Ponsi, it is also possible to contribute to improving the energy efficiency of the entire house.
If you are thinking of buying one, here is everything you need to know about them.
What is meant by controlled mechanical ventilation?
Controlled mechanical ventilation (CMV) is a system that allows continuous and controlled exchange of air in closed environments. These types of systems are therefore designed to guarantee the healthiness of indoor spaces, at home or in the workplace, so that they can be properly and healthily ventilated.
They are particularly recommended for use in situations where it is not possible or not appropriate to change the air by opening windows or balconies. In such cases, failure to extract pollutants and other substances could actually have harmful effects on the health of the occupants.
It is no coincidence that controlled mechanical ventilation systems are, in fact, essential in low-energy buildings, i.e. buildings with a high degree of thermal insulation and an almost complete lack of air inflow.
How mechanical ventilation systems work?
In general, the operation of a controlled mechanical ventilation system is based on a double flow of air: the flow of exhaust air (full of carbon dioxide, humidity and other harmful substances) extracted from inside and fresh air coming from outside.
The two flows are conveyed into a heat recovery unit, inside which thermal energy is recovered. By means of a cross-flow exchanger, the exhausted air is expelled, without dispersion of energy, while the fresh air is first filtered appropriately, and heated or cooled as required, before being introduced into the environment.
Controlled mechanical ventilation: advantages
Controlled mechanical ventilation is becoming increasingly popular undoubtedly because of the many benefits it can provide to all indoor environments (homes, schools, offices, etc.).
Let’s look at the main advantages of a CMV system:
- Health and hygiene: thanks to the continuous change of air, it is possible to effectively control all indoor pollutants (VOCs, CO2, formaldehyde, etc.), reduce the concentration of Radon gas, reduce pollutants and allergens from outside, reduce the risk of mould proliferation due to air humidity and to improve air quality.
- Comfort: the system, which is autonomous and silent, allows control of internal humidity and the evacuation of odours, reduces the risk of temperature fluctuations due to draughts, as well as preventing insects and noise coming in from outside.
- Security: avoiding keeping windows open dramatically reduces the risk of intrusion.
- Energy saving: a mechanical ventilation system with heat recovery can achieve a significant reduction in energy consumption and in emissions that pollute the atmosphere.
- Energy certification: a building equipped with CMV systems can benefit from tax breaks and deductions linked to energy certification which, by improving the performance of the building, increases its value.
Types of CMV Systems
Although the operating principle is the same, there are two types of CMV systems. The first type is called decentralised or individual mechanical ventilation: in this case, the system includes a ventilation unit for each room in the house or structure. A decentralised mechanical ventilation system can be:
- single flow;
- single flow alternating with heat recovery;
- dual heat flow.
Since it is non-invasive and easy to install, this single-room mechanical ventilation system is particularly suitable for existing dwellings, those undergoing minor renovations and upgrading.
The second type of system is the so-called centralised controlled mechanical ventilation, which requires two independent ducts that guarantee balanced extraction and introduction of air: the exhausted air extracted from inside moves along one line, and the new and healthy air to be introduced into the environment is transported along the other. The double cross-flow guarantees continuous recirculation of the air throughout the house. For this reason, this type of system is more suitable for installation in new buildings or when major renovations of buildings are undertaken.
Controlled mechanical ventilation prices
Once all the advantages of this innovative air exchange system have been listed, the only question remaining is: how much does a CMV system cost? Prices obviously depend on the type of system to be installed.
For a single individual controlled mechanical ventilation unit, the price can range from EUR 500 to 1,000. Prices are higher for a latest generation centralised controlled mechanical ventilation system with cooling, also equipped with a dehumidification system and double air flow. For systems of this type, the costs can vary from EUR 5,000 to 10,000.
Factors affecting the final cost
Regardless of which type is chosen, there are several factors that affect the price of a controlled mechanical ventilation system. The main factors are:
- area and volume of the building or individual room;
- number of rooms in the dwelling;
- level of thermal insulation of the building;
- need for masonry and renovation work;
- number of persons living in the building;
- location of the building (floor, exposure, etc.);
- type of flow (double, single, alternating);
- presence of a dehumidification device.
Visit the Ercos Ponsi website to learn more about all the benefits of controlled mechanical ventilation.