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VMI the solution for indoor air quality
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COMPARING mechanical ventilation systems & VMI® systems

  Single-flow mechanical ventilation Double-flow mechanical ventilation VMI® Comments
Filtration of incoming air with an F7 filter  no option   yes Blocks fine particles of up to 0.3 microns
Preventing Radon buildup  no  no  yes The positive pressure prevents the radon from entering (85% success rate according to the CSTB)
Contains VOCs in their supports  no  no  yes Positive pressure differential of 3 - 4 pascals
Heat recovery in mid-season no  no yes Day ventilation healting in the mid-season if the temperature detected by the VMI® system exceeds the setpoint temperature
Destratifying the heat trapped at the ceiling no  yes yes By pushing the air from the ceiling, the heat stored at the ceiling is returned to the living environment
 Optimising air intakes using bypasses no  yes yes Selecting the north or south air intake depending on the season
Coupling with water heating systems  no no  yes Integrating VMI in the existing heating system (boiler, collective systems, etc.)
Developing coupling with REN no  yes yes VMI + REN: Heat pump, solar panel (air, water), condensing boiler, thermodynamic hot water tank (double flow + REN = complex and over-expensive systems -- no ROI)
Insulated duct network no option yes All of our systems are supplied with insulated ducts
Preheating incoming air no yes yes To ensure user comfort and avoid drafts of cold air
Homogeneous temperatures throughout the home no yes yes Mixing + destratification contribute to ensuring homogeneous temperatures
Humidity control system to maintain relative humidity within the comfort zone no no yes The VMI management system will speed up or slow down the flow to maintain RH between 40 and 60%
Flow management depending on outdoor and indoor humidity levels no no yes Outdoor and indoor probe for automatic flow management.
Night ventilation cooling option no yes yes During hot periods, the positive input ventilation system allows the cool night air to enter to flush the home (automatic management)
Avoid uncomfortable zones created by drafts of air from air intake openings no yes yes Window openings will not allow cold air to enter, as they are used to remove air
No entry of dust, fine particles and pollens via air intakes and inadequate sealing no no yes
Mechanical ventilation system air intakes become air vents, preventing dust from entering
Assistance with chimney draw no no yes
The air flows in the right direction to improve draw
Prevents outdoor noises from coming in via the air intake openings no no yes Less noise will enter via the vents


Ventilation flow can be adjusted to the room no no yes Fresh air flow is adjusted to 0.5 V/h
Radio remote control no yes yes The user is equipped with a radio remote control for the ventilation system
Clean ducts no no yes The air entering the duct after the positive intake ventilation system passes through the filter
Little work required to install no no yes Shorter and less ducts
Reliable and robust no no yes We have been manufacturing our systems since 1986 and their average life cycle exceeds 10 years.
Disturbs some gas heating systems yes yes no No modification required for gas systems to install a VMI system
Made in France no yes yes Most components are manufactured and assembled in France
Continuous development training for installers yes yes yes Our technical sales teams are constantly training the installers of our customers
Direct sales to private customers yes yes no We only sell to professional installers trained in how to install our systems

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