What is double flow ventilation ?
Double-flow controlled mechanical ventilation (VMC) is an essential ventilation solution for any type of housing , whether it is an individual house or an apartment .
This system stands out for its high efficiency , allowing better energy and heating management. It works thanks to a heat exchanger which recovers heat from the outgoing air to preheat the incoming air, thus optimizing the temperature inside the rooms .
A double flow VMC takes the “new” air outside. She will then pass it through filters to purify it (pollens, certain pollutants, dust). It will then be redistributed to your accommodation. Depending on the space available, we will find wall-mounted models in the most spacious homes.
Ducts and ducts form a complex network that ensures efficient air distribution. Compared to traditional systems, the price may be higher, but the energy and heating benefits are considerable.
In small spaces and apartments, we find VMC adapted to false ceilings . In some cases, the use of a decentralized system may be necessary.
On a daily basis, your management can be controlled at any time with the various regulation accessories .
The real difference compared to a simple flow : the VMC central unit integrates a heat exchanger.
The “new” air will cross the stale air. This allows calories to be recovered from the indoor air to heat the fresh air.
In the middle of winter, this allows you to enjoy quality air with a higher temperature, which reduces the feeling of cold.
Comparison of different types of VMC
- Self-Adjusting High Efficiency VMC : This system offers an efficiency of 90-95% and is ideal for well-insulated rooms . Complete kits are available to facilitate installation.
- Humidity-controlled VMC : Suitable for humid climates, this system uses special filters and exhaust vents to control humidity.
- VMC Thermodynamic : This system uses a heat pump to maximize thermal efficiency and can even recover hot water for other uses.
To help you choose wisely, here are general indications, which may vary depending on the models and brands.
Type of Double Flow VMC | Yield (%) | Air flow (m³/h) | Cost (€) | Benefits | Disadvantages | Advice |
---|---|---|---|---|---|---|
High efficiency self-adjusting | 90-95 | 250-400 | 1500-3000 | Energy saving, simple installation | High initial cost | Ideal for well-insulated homes |
Hygro-adjustable | 80-90 | 200-350 | 1200-2500 | Adaptability to humidity, efficiency | Adjustment complexity | Good forhumid climates |
High efficiency broadband | 92-97 | 300-500 | 2000-4000 | High performance, suitable for large spaces | High cost, complex installation | For commercial buildings or large homes |
Thermodynamics | 75-85 | 200-400 | 3000-6000 | Heat recovery, energy efficiency | Very high cost, maintenance | For those looking to maximize energy efficiency |
Mural | 70-80 | 100-250 | 800-1500 | Easy installation, reduced bulk | Less efficient, limited in flow | For small apartments or isolated rooms |
For false ceiling | 85-90 | 200-400 | 1800-3500 | Discretion, efficiency | Cost, requires false ceiling | For renovations or new constructions with false ceilings |
Decentralized | 60-75 | 50-150 | 500-1200 | Easy installation, reduced cost | Low efficiency, limited flow | For isolated rooms or limited budgets |
Advantages of a double flow VMC
Air quality
In terms of indoor air quality (IAQ), dual-flow ventilation distributes a flow of fresh air to the different spaces in your home. The installation and network must obviously be of high quality and maintained to avoid leaks. The insulation of the house must also be taken care of.
The presence of different filters also blocks some of the pollen and dust.
Comfort
Double-flow VMC plays a role in three elements of comfort: thermal comfort, acoustic comfort and olfactory comfort (smells).
On the first point, the thermal aspect, the double flow allows the air in the exchanger to be preheated in winter or, conversely, cooled in summer using super-ventilation or by combining it with a Canadian or Provençal well. .
In terms of hearing, the arrival of external noise will be limited. Be careful to respect a silent diffusion of air within the different rooms.
Last point, in terms of odor, ventilation ensures more regular air renewal throughout your home.
Energy performance
By recovering calories from the outside, your ventilation significantly improves its performance. This is why we find these installations in positive energy houses or passive houses .
Installation and Accessories
Installation of dual-flow VMC requires conduits , generally HDPE or PVC , and various VMC accessories for optimal performance. Brands like Brink Climate Systems , Zehnder and Aldes offer complete kits, including ducts and accessories.
Our products comply with NF standards and are eligible for reduced VAT if installed by a professional. Waterproofing and renovation are also taken into account in our solutions .
In addition to double-flow VMC systems, we offer Canadian wells , programmable room thermostats and modular regulators .
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