What is Controlled Mechanical Ventilation (CMV) and how does it work?

CMV (Controlled Mechanical Ventilation) is a system that allows to control the air exchange inside a building (private dwelling, commercial building or other) without opening the windows and, therefore, avoiding costly heat losses . Unhealthy air (excessively moisty, highly-concentrated of polluting particulates, smelly, etc.) is expelled from the building and clean air is introduced through special diffusers. CMV is equipped with a very important heat recovery unit since, thanks to its structure (made of different materials and shapes), allows heat exchange between inlet and outlet flow streams, without mixing air, thus minimizing the outside temperature influence on the inside one. Today, Controlled Mechanical Ventilation has become indispensable for buildings with high thermal insulation level, which, without such a system, tend to have particularly unhealthy environments, favoring excess environmental humidity.

Centralized CMV and stand-alone CMV

CMV systems consist in two main categories: centralized and stand-alone CMV systems. Centralized CMV mainly consists of air masses exchange system within the various environments, which moves air from more humid environments to drier ones (and vice versa), obtaining a homogeneous and comfortable climate. This plant type (today widespread in new buildings with high thermal insulation) requires a zone, normally a gap between the roof and the suspended ceiling, exclusively dedicated to pipes reaching all the rooms, and also an area where to place the air flows management electro / mechanical unit (a device equipped with fans, filters and other components). Centralized CMV system is a very efficient and optimal solution to manage indoor microclimate, although installation (if not carried out during the construction phase) is very laborious and expensive. Stand-alone systems have been developed for buildings that, in the design phase, have not provided a centralized Controlled Mechanical Ventilation system and they are normally installed on perimeter walls, performing the same function as centralized CMV systems, mixing indoor and outdoor air flows. Stand-alone CMV latest generations achieve high performance and are equipped with filters, sensors and advanced technologies that create very comfortable environmental conditions. Unlike centralized systems, stand-alone CMVs (regardless of the flow rate) are effective just in single room. KontrolAIR is one of the most technologically advanced stand-alone CMVs, as it has internal sensors which allow the automatic optimization of the environmental comfort of home.

Save money and increase your property value

Controlled Mechanical Ventilation is a technology with several positive economic effects. CMV installation in a building increases its market value improving its energy class (from Class G-lowest efficiency to A-highest energy efficiency class, like the household appliances). Suffice it to say that the transition from a lower energy efficiency class to a higher one increases property value of around 10%. Concerning economic management, benefits are immediate, as avoiding heat dissipation you can achieve considerable cost savings on energy bills. Controlled Mechanical Ventilation system usually reduces the energy cost of heating / cooling system of about 35%.