COMPARING mechanical ventilation systems & VMI® systems

Single-flow mechanical ventilationDouble-flow mechanical ventilationVMI®Comments
IAQ
Filtration of incoming air with an F7 filter nooption yesBlocks fine particles of up to 0.3 microns
Preventing Radon buildup no no yesThe positive pressure prevents the radon from entering (85% success rate according to the CSTB)
Contains VOCs in their supports no no yesPositive pressure differential of 3 – 4 pascals
ENERGY AUDIT
Heat recovery in mid-seasonno noyesDay ventilation healting in the mid-season if the temperature detected by the VMI® system exceeds the setpoint temperature
Destratifying the heat trapped at the ceilingno yesyesBy pushing the air from the ceiling, the heat stored at the ceiling is returned to the living environment
 Optimising air intakes using bypassesno yesyesSelecting the north or south air intake depending on the season
Coupling with water heating systemsnonoyesIntegrating VMI in the existing heating system (boiler, collective systems, etc.)
Developing coupling with RENno yesyesVMI + 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 networknooptionyesAll of our systems are supplied with insulated ducts
COMFORT
Preheating incoming airnoyesyesTo ensure user comfort and avoid drafts of cold air
Homogeneous temperatures throughout the homenoyesyesMixing + destratification contribute to ensuring homogeneous temperatures
Humidity control system to maintain relative humidity within the comfort zonenonoyesThe 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 levelsnonoyesOutdoor and indoor probe for automatic flow management.
Night ventilation cooling optionnoyesyesDuring 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 openingsnoyesyesWindow 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 sealingnonoyesMechanical ventilation system air intakes become air vents, preventing dust from entering
Assistance with chimney drawnonoyesThe air flows in the right direction to improve draw
Prevents outdoor noises from coming in via the air intake openingsnonoyesLess noise will enter via the vents
USAGE
Ventilation flow can be adjusted to the roomnonoyesFresh air flow is adjusted to 0.5 V/h
Radio remote controlnoyesyesThe user is equipped with a radio remote control for the ventilation system
Clean ductsnonoyesThe air entering the duct after the positive intake ventilation system passes through the filter
Little work required to installnonoyesShorter and less ducts
Reliable and robustnonoyesWe have been manufacturing our systems since 1986 and their average life cycle exceeds 10 years.
Disturbs some gas heating systemsyesyesnoNo modification required for gas systems to install a VMI system
Made in FrancenoyesyesMost components are manufactured and assembled in France
Continuous development training for installersyesyesyesOur technical sales teams are constantly training the installers of our customers
Direct sales to private customersyesyesnoWe only sell to professional installers trained in how to install our systems

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