Heat Recovery Ventilation

Unlike conventional ventilation, Heat Recovery Ventilation not only ventilates a buildings rooms, but a well designed HRV System conserves up to 80% heat whilst ventilating during winter. Some manufacturers make rather optimistic claims of being able to achieve around 90%, however the realistic achievable efficiency of the most efficient systems available in the UK are up to 80%.

The reason Heat Recovery Ventilation is becoming hugley popular in new builds is because the systems not only provide air filtering, purification and pollution eliminators but they also conserve heat energy in winter which would otherwise be wasted in conventional ventilation systems. In the summer time the heat exchange mode is bypassed meaning the system will bring into the building cool and clean air whilst expelling stale air.

Improve your living environment and/or extract damp air from toilets and kitchens.

Health Benefits:
Modern well insulated buildings have almost no free air flowing draughts. This can result in 10x the pollution levels compared to the outside environment.
-which magazine.

Carbon Dioxide levels in one in ten British homes are above World Health Organisation guidelines. -Surveys by the Department of Environment Transport Region (DETR) and the Building Research Establishment (BRE).

Ventilation is essential for a healthy and pleasant home or working environment, particularly in built up areas such as London.

With over 25 years experience, we will find the best solution for you. All our systems are compliant with Heath, Safety and Fire Regulations.

How it works

This basic diagram explains how the system might be positioned in a standard home. As you can see the unit is positioned in a suitable position. In this case, the loft space. It has one duct bringing in Fresh Air and one duct Expelling Stale, Moist Air.

The bathroom / toilets and kitchen rooms have fans extracting the stale and moist air, whilst the bedrooms, living areas and other desired rooms have fresh air being supplied to them.

The HRV box mounted in the loft space, contains a structural heat exchange element, which absorbs heat (in air being extracted) and transfers it to the fresh cold winter air from outside, meaning the fresh air coming in absorbs most of the heat. NB: The air does not mix, only the heat is transferred.