Mechanical Ventilation with Heat Recovery (MVHR)

Reduces household energy consumption

Ideal for new build

Helps create a healthy and clean indoor air environment

For whole house application

Inadequate ventilation coupled with airborne pollutants can lead to poor indoor air quality and as a consequence may have a detrimental effect on an occupant’s health and comfort. Incorporating a highly efficient Mechanical Ventilation with Heat Recovery (MVHR) system is an effective way of avoiding this and helps to maintain a healthy living indoor environment.

How does it work?

Also referred to as System 4 in Approved Document F of the Building Regulations, MVHR efficiently combines supply and extract ventilation into one centralised system.

As its primary function, waste, polluted and moist air is extracted from a dwelling’s wet rooms via a duct system and is passed through a heat exchanger before being exhausted outside. Fresh incoming air is filtered and as an added benefit, pre-warmed via the heat exchanger and evenly distributed to the habitable rooms, thus reducing household energy consumption and the demand on existing heating systems.

The technology is most effective when installed in an air-tight dwelling as the effect is not compromised by external leakage.

What can MVHR do for me?

  • Improves indoor air quality through continuous balanced ventilation,
    throughout the whole house
  • Easy and quick to install, commission and maintain
  • Helps reduce the Dwelling Emission Rate (DER) to secure additional SAP points
  • Provides peace of mind that the units performance levels comply with current Building Regulation requirements
  • Reduces household energy consumption

SAP ratings

As an added benefit to developers, specifiers and self-builders, incorporating an MVHR system will also help to lower Dwelling Emission Rates (DER) and therefore provide higher SAP ratings.

For those looking to further improve their DER and integrate heat recovery into a centralised extract system, please see xxxxxxxxxx.