Mitsubishi Electric VL 100U Lossnay Wall Mounted Ventilation System

Particularly suitable for modern homes with high insulation afforded by double glazing and cavity insulation, which require ventilation to remove stale air without major heat loss.

Standard Filter
Effective fresh air ventilation
Efficient recovery of heating/cooling energy
Good sound attenuation
Reduces heating costs

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Simple and Effective


Excellent Air Quality and Heat Exchange Efficiency

Poor air quality can be attributed to many problems arising in the workplace or in the home.  It is believed to contribute to a significant loss in productivity, low morale and higher rates of sickness amongst many employees.  The object of providing good ventilation alongside air conditioning in residential and commercial buildings is to provide conditions under which people can live and work in comfort and safety.

Developed and refined over the past 30 years, the Lossnay system has perfected the recovery of waste energy.  The units reduce overall energy costs by extracting stale air and then recovering the heating or cooling energy to either warm or cool incoming fresh air.  By utilising this energy, the Lossnay system can save up to 30% on initial capital costs of heating and cooling plant.


The Secret of the Lossnay System


The secret of the Lossnay system lies in the cross flow, plate fin structure of the heat exchange unit (Lossnay core).

A diaphragm made of specially processed paper fully separates inlet and exhaust air supplies, ensuring that only fresh air is introduced to the indoor environment.  The superior heat-transfer and moisture permeability of the special paper ensures highly efficient total heat exchange (temperature and humidity) when inlet and exhaust air supplies cross in the Lossnay element.


Main features of Lossnay


Effective ventilation

Lossnay’s simultaneous air exhaust/supply provides effective ventilation.  Conventional ventilators (ie. Extract propeller fans) do not work effectively within air tight buildings because of the negative air pressures involved.


Good energy recovery

Total heating (sensible and latent) recovery provides a comfortable air temperature within the room.  The energy saved by using Lossnay contributes towards lowering the heating or cooling requirement within the building, therefore reducing the energy requirement and running costs.


Free cooling function (LGH series)

When the outdoor temperature is lower than the indoor air conditioned temperature in the summer, Lossnay provides fresh outdoor cool air to reduce the indoor air temperature.


Multi-ventilation mode (LGH series)

The supply/exhaust balance can be selected to suit the usage environment and location.


Good sound attenuation

As the Lossnay core is made of paper and the permeable holes are small, the Lossnay core provides outstanding soundproofing properties and is appropriate for sound proof rooms.


Part L2 Building Regulations

With the introduction of Part L2 (Part J in Scotland), new building design is changing to become more airtight, as well as energy efficient.  The need for fresh air has remained the same however and thus poses new challenges for modern design.  Lossnay fully meets these challenges due to its basic principal and its efficient heat recovery.