Mechanical Ventilation with Heat Recovery (MVHR) is a balanced and controlled forced-air ventilation system that both supplies and extracts air throughout your home. It delivers a balanced low energy solution that is extremely efficient as it re-uses up to 91% of the heat that would have otherwise have been lost through traditional ventilation methods.
As our homes become increasingly airtight through energy efficiency measures such as draught-proofing, insulation and double-glazing, the lack of natural ventilation means that moisture created from everyday activities such as cooking, washing and even breathing remains in the property. This moisture builds up and collects on cold surfaces such as windows and exterior walls and causes damp, condensation and mould, all of which contribute to poor indoor air quality.
An MVHR unit combats this by providing a source of constant ventilation, so that everyday moisture produced in the property is extracted to the outside so has no time to settle on surfaces, eliminating the risk of cosmetic or structural damage caused by condensation and mould.