Demand Controlled Ventilation:

A good supply of fresh air surely is a prerequisite to a healthy living environment, but as more and more buildings become better thermally insulated and as a result more airtight, indoor air quality can often be overlooked.

We look at a ventilation system from Aereco that addresses this issue and as we found out it does exactly what it says on the tin. This system is especially suited to the retrofit situation, in most cases involving minimal disruption to the existing structure.

 

  Mechanical Heat Recovery Ventilation:

From our Passive House Video Series:

With the Passive House Standard, there is a requirement for a high level of airtightness: 0.6 Air Changes per Hour. So how do we get quality,fresh air into our buildings? In this video we look at the mechanically controlled ventilation system; it’s benefits and practical installation……

        

Heat Recovery Ventilation is a method of efficiently ventilating a house.

The system works as a result of an ingenious design that allows cool air and warm air to by-pass each other on their way in and out of the house without mingling;

Through a network of ducts fresh air is supplied  continuously to every room in the house.
This fresh air is being filtered as it enters the house.

Meanwhile through a similar network of ducts the stale warm air is extracted from every “wet” room in the house. (The “wet” rooms are the kitchen, utility, bathrooms,
toilets and shower rooms).

Heat Recovery:
Using a HRV machine up to 90% of the heat can be recovered from the extracted air and
transferred  to the incoming fresh air.