GROUP 2 – VENTILATION AND COOLING

- Aggregates
- Pumps
- Recovery

To achieve the new housing standards described, a balanced ventilation system is a necessary for the supply of sufficient fresh air.

In a balanced ventilation system the fan sucks in as much air as it sends out.
Therefore the danger of over- or underpressure is eliminated – if the building is air tight enough.

The quality of the air that we breath is crucial to our health and well being. To achieve a healthy indoor climate we must dispose of the ”used” air since it contains both humidity and pollution from the external environment. To replace it we suck in new fresh air, filtered and heated, provided the outdoor air is fairly clean that is. Approximately 80% of the heat in the air we get rid of can be recovered and used for the heating of the incoming fresh air.

A heat recovery system should be planned so that the length of ducts are as short as possible and with as few direction changes as possible to reduce the energy need (resistance) to move the air. Long ducts also complicates maintenance inside the ducts.

Selection of a suitable balanced system and the mounting of it depends on numerous factors and should be handled in close collaboration with professionals. It is important to know also that one has a proper servising-network as support.
Cleaning the heat recovery unit and changing filters etc. at interval as specified by supplier is important.

Air tight houses = sich building syndrome ?

Some buildings get huge indoor climate problems due to too air tight constructions, humidity in
the constrcution, and/or unhealthy materials.

Increased air tightness must be compensated by increased fresh air changes.
Air tight houses with a well balanced ventilation system hase a fresher indoor climate than most buildings
and the suck building syndrome can be eliminated there.

For more information go to the internet and search for sites of relevance using keywords like : balanced ventilation system manufacturers, balanced ventilation system manufacturers association, heat recovery units manufacturers, heat recovery units manufacturers association etc. Then add your country or region behind the search word if you prefer local products.