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MVHR Explained

Nuaire’s MVHR systems provide optimised, balanced ventilation with heat recovery with 95% efficiency. Our systems will quietly and efficiently provide the home fresh, filtered air all year round, improving the indoor air quality and reducing dust and allergen levels.


Government legislation and building requirements require that new homes are built with very low leakage rates, making them more energy-efficient. These air-tight construction methods can result in poor indoor air quality as condensation and pollutants remain trapped inside the home.

MVHR (Mechanical Ventilation Heat Recovery) offers year-round ventilation that will improve indoor air quality whilst recovering the heat that would otherwise be lost outside.

How MVHR Works diagram

House Diagram

How Does MVHR Work

A proven low-energy and highly efficient ventilation method, MVHR is fast becoming the most common method of whole home ventilation for new build properties.

MVHR systems work by combining supply and extract in one unit. Moisture-laden, stale air is extracted from ‘wet’ areas, such as kitchens and bathrooms. The heat from this stale air is recovered via a heat exchanger, and this tempered air delivered into the living areas of the home. Nuaire’s MVHR range recovers heat at 95% efficiency, making it the most effective range currently available.

In warmer months when cooling is required to maintain comfort levels, Nuaire’s MVHR Eco range offers 100% bypass with no loss of resistance.

MVHR is recommended for all new-build and self-build properties with high air tightness ratings and are the ideal solutions for meeting efficiency and air quality targets.

Nuaire’s MVHR units have been specifically designed with noise and efficiency in mind - and this is essential, as MVHR systems are constantly running, providing filtered air 24 hours a day.

Our MVHR units provide the home with fresh, filtered air all year-round while being as unobtrusive as possible - giving you peace of mind that the air you breathe is as free from dust and allergens.

If you are a consultant looking for MVHR solutions for residential new-build apartments, then Nuaire’s MVHR range includes options that are suitable for wall and ceiling-void installation.

Different system sizes are available that have been designed to ventilate all types of properties sizes and protect against harmful outdoor pollutants.

Nuaire’s MVHR systems are designed for straight forward professional installation within UK homes. Installation engineers must be trained and registered to test and commission ventilation systems on new build homes.

It is recommended, wherever possible, that your MVHR unit should be installed in a utility room, close to an external wall on the north elevation, keeping it front-of-mind with good access points. This is generally the cooler part of the home, even during the hotter summer months.

Wherever your MVHR unit is installed, humidity is the most important consideration to bear in mind. A dry room that maintains a fairly consistent temperature throughout the year is ideal, and colder rooms should be avoided. If you are uncertain about where best to position an MVHR system within your home, we recommend that you seek the advice from our sales department.