What is Heat Recovery?
A human being usually consumes about one kilogram of food and two litres of water each day – but at least 15 000 litres of air. Of this, up to 90% may consist of indoor air. For air to be clean to breathe, it has to be replaced with outdoor air every two hours.
An effective ventilation system will protect the building fabric and occupants against potentially harmful condensation and mould growth and other airborne pollutants that are present in
“Fresh, clean, warm air……and saving energy too!”
What is ventilation with Heat Recovery?
Heat recovery is a process of continuously preheating incoming cool supply air by warming it with the outgoing exhaust air. Warm air is not simply exhausted but transfers most of its heat to supply air in a highly efficient heat recovery exchanger. At no time do the airstreams mix as the heat radiates through the plates of the exchanger.
Extract Air
Stale air is contaminated with humidity, toxins and smells extracted from the kitchen, bathroom and toilet. Outlet grilles in toilets and wet room areas, such as the bathroom, en-suite, utility and kitchen allow a constant or demand oriented air flow volume to be extracted.
Supply Air
Fresh air is fed directly from outside into the ventilation system through a filter. The heat taken from the extracted air is used to warm the fresh filtered air in the exchanger and then flows through ducting. By undercutting doors and fitting transfer grilles fresh air circulation is ensured throughout the dwelling.
Why bother with MVHR?
With ever increasing energy costs the need to reduce carbon emissions in line with government policy and to conserve heat and power is leading to higher levels of insulation and air tightness in residential dwellings and commercial buildings. The resulting poor indoor climate can lead to health problems for occupants and visitors alike and long term damaging effects to the fabric of a building.
Fresh, warmed, filtered air is the answer!
In a healthy home thousands of litres of fresh air is needed everyday to compensate for the moisture generated by each individual person, and also through cooking, washing and bathing.
Mechanical ventilation with heat recovery (MVHR) provides the perfect solution
MVHR – Creating a Healthier Environment in Residential and Commercial Buildings
- Recycling warmth from waste air
- Helps reduce the carbon footprint
- Meets Building Regulations, Approved document, F and L, April 2010 (MVHR)
- Constantly refreshing the internal atmosphere
- In excess of 90% Heat recovery possible
- Save energy by reducing heating costs
- Extracts airborne pollutants that can cause allergies and asthma
- PassivHaus Institute compliant
- Supplies fresh warmed, filtered air to living spaces
- Removes condensation and humidity from wet rooms
- Reduces carbon dioxide levels that can cause headaches and drowsiness
- Eliminates dampness and mould growth
- SAP Appendix Q Eligible
- BREEAM compatible
