intelligent Hybrid Ventilation
(iHybrid)

The system, completely new to the UK, is known as Passivent iHybrid.
Passivent, specialists in delivering natural and energy efficient ventilation have developed an innovative solution which provides domestic dwellings with the best of both worlds - natural, no energy ventilation in the summer, and heat recovery ventilation in the winter.

Natural Ventilation + Heat Recovery = iHybrid.

55% electrical consumption saving vs. standard mechanical heat recovery
Research carried out by the Institute of Energy and Sustainable Development (IESD) at De Montfort University shows
that a temperature of 9°C would be the optimum balance point within a dwelling. Based on this, it is calculated that the iHybrid system will operate in Heat Recovery mode for approximately 45% of the year. As a result, 55% of the electrical energy of the fan would be saved as it would be switched off whilst operating in Natural mode.

Less carbon emissions
Calculations show that carbon emissions would be reduced by approximately 8.5% using the Passivent iHybrid system compared to a standard heat recovery system. This is because the standard system uses energy all year round to bring in fresh air, whilst Passivent iHybrid uses no energy for supply air whilst operating in Natural mode.

Extended life expectancy
As the iHybrid system will operate in Natural mode for 55% of the year, the heat recovery unit will be switched off for this time. It is estimated that this will prolong it’s expected life to approximately 20 years, compared to 10 years for a standard mechanical heat recovery unit which will be working 100% of the time. In addition, filter changes will be required less frequently with the Passivent iHybrid system, as they are not used whilst the system operates in Natural mode.

Lower whole life costs
Calculations show a potential saving of approximately 39% over a 60 year life of a dwelling. As there will be fewer replacement filters and heat recovery units with the Passivent iHybrid system, long term costs are greatly reduced.

Optional back-up feature
Should a standard mechanical heat recovery ventilation system be switched off, or filters not be replaced at the right time, ventilation can be drastically reduced causing problems for both the dwelling and it’s occupants. With the iHybrid system, there is an optional feature which allows the Natural ventilation mode to act as a fail safe and
back up to ensure there is always adequate extraction even when the fan is switched off.

Occupant behaviour freedom
With a standard mechanical heat recovery system, opening windows and doors can imbalance ventilation. With Passivent iHybrid, occupants are free to open windows in summer safe in the knowledge that the ventilation in Natural Mode will not be adversely affected.

Unique system and unrivalled knowledge
Passivent are market leaders in the design and supply of natural ventilation systems in the UK. A completely new concept, Passivent iHybrid for Domestic Dwellings is completely unique and is not offered by any other supplier in the UK.

If you would like to learn further about the new exciting Passivent iHybrid Ventilation Solution and Technology please contact: technical@passivent.com

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