Have you ever heard of the single-flow or controlled mechanical ventilation? The single flow CMV ensures the permanent renewal of the indoor air through ducts in all the rooms of your home. To help you see more clearly, read our buying guide on single-flow CMV, where we present a selection of the best products available on the market today.
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Our selection
"This self-contained ventilation unit from Aldes is our first choice. It is self-regulating with compact dimensions for a general and permanent ventilation of your dwelling."
"The Atlantic Autocosy line is the single flow CMV for individual housing. It is ideal in replacement thanks to these Line diffusers with universal connection."
"The Aldes easyhome Hygro is the VMC intended for the new as the renovation. It renews the air of your house and evacuates the ambient…"
"The Unelvent Deco DHU K is the ventilation solution for your individual house. It can be used to replace an existing ventilation system or as…"
This self-contained ventilation unit from Aldes is our first choice. It is self-regulating with compact dimensions for a general and permanent ventilation of your dwelling.
101 £ on AmazonThis Aldes easyhome auto compact single flow ventilation unit automatically ensures the extraction and daily air renewal in your home. It is among the quietest, because it emits noise from 23 dB (A). Thanks to its pictograms and its simplified electrical connection, the installation of this VMC is intuitive and fast. For its installation, the assembly can be done in multiposition, you can place it on the wall, the ceiling, on the ground and on the slope. It is equipped with only 2 fixing screws and also with integrated anti-vibration bands.
The Easyhome single flow ventilation is self-regulating for single-family houses or apartments. This model is also perfect for renovation. Its average consumption is 14 W which is profitable for all. It can renew the air in your home 24 hours a day, 7 days a week, so you can turn it on permanently.
The Atlantic Autocosy line is the single flow CMV for individual housing. It is ideal in replacement thanks to these Line diffusers with universal connection.
77,46 £ on AmazonThe Atlantic Autocosy self-regulating single flow CMV includes 3 fixed universal vents with an extra-flat design. It has 1 line vent for kitchen and 2 line vents for sanitary which do not clog and can go through the dishwasher. This makes it easy for you to clean. It is the VMC simple flow very effective for the renewal of air, because it is adaptable in all types of ducts. It is also equipped with 2 removable tappings for discharge and kitchen.
Moreover, the assembly of this Atlantic Autocosy single flow CMV is very easy and fast, because it has an exclusive TWIST & GO system for a tight and long-lasting installation. It guarantees an optimal comfort without acoustic nuisance in your house, because it is also very quiet. You do not risk to hear any noise, it is the total silence. Its power consumption is 12W, which is very economical to help you reduce your bill.
The Aldes easyhome Hygro is the VMC intended for the new as the renovation. It renews the air of your house and evacuates the ambient humidity as close as possible to your needs.
236 £ on AmazonThe VMC easyhome hygro premium of Aldes allows to connect a kitchen up to 7 sanitary, with additional inlets, it is especially ideal for the big houses. But also, it is equipped with humidity sensitive air inlets and outlets which detect the humidity room by room. It is a ventilation flow that can be automatically adapted to your life rhythm. The connection of the flexible ducts on the group of this VMC is simplified thanks to the Easyclip algaine system provided which includes the connection and a fast collar.
Moreover, it is also compatible with Optiflex semi-rigid ducts, thanks to its new accessory for watertight and efficient installations in time. This guarantees its durability. It is compatible with all types of ducts. This CMV is ideal to renew the air in your home on a daily basis.
The Unelvent Deco DHU K is the ventilation solution for your individual house. It can be used to replace an existing ventilation system or as part of a renovation extension.
109 £ on AmazonAny specific needs?
The best single-flow HVAC in 2021
The best single-flow HVAC in 2021
The best single-flow HVAC in 2021
The best single-flow HVAC in 2021
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| TOP OF THE TOP | NOT EXPENSIVE | EXCELLENT choice | ||
In accordance with our commitment, this buying guide does not contain any sponsored products. |
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8/10 |
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| OUR SELECTION |
Easyhome auto compact Aldes
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Atlantic Autocosy line 412288
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Aldes 11033034 easyhome hygro Premium
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Unelvent 603116 Deco DHU K
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This self-contained ventilation unit from Aldes is our first choice. It is self-regulating with compact dimensions for a general and permanent ventilation of your dwelling.
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The Atlantic Autocosy line is the single flow CMV for individual housing. It is ideal in replacement thanks to these Line diffusers with universal connection.
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The Aldes easyhome Hygro is the VMC intended for the new as the renovation. It renews the air of your house and evacuates the ambient humidity as close as possible to your needs.
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The Unelvent Deco DHU K is the ventilation solution for your individual house. It can be used to replace an existing ventilation system or as part of a renovation extension.
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Performance
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Superb, very quiet ventilation system
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Can be installed in any type of ductwork
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Equipped with humidity sensitive air inlets and outlets
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Superb CMV compliant with the acoustic regulation
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Safety
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Automatically controls airflow and air exchange
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Features an exclusive TWIST&GO hanging system
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Features an Easyclip algaine system
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equipped with an adjustable hygrometric probe from 60% to 90%
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Specificity
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Multi-position mounting
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Quick and easy installation
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allows the connection of a kitchen up to 7 bathrooms
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Disposed of a low consumption motor 3 speeds
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You can opt for the smaller single-flow units if you don't have much space in your house, such as houses with flat roofs or converted attics. But they are more expensive and have fewer sanitary connections, on average 4 instead of 6 for the classic models.
The choice is also made according to the noise level. A VMC has no problem with noise if you install it in the attic. On the other hand, if you wish to install your CMV in the house, choose a compact model that is quieter to avoid disturbances that could affect your peace of mind at home.
The number of outlets must correspond to the configuration of your house, because some single flow CMV have 6 sanitary outlets and for a simpler model, it counts only 3 with 1 or 2 outlets for the kitchen. It is thus necessary to check well according to your housing.
Tomake the choice of your simple flow CMV, it is also important to take into account the guarantee. Problems can occur after a few years of using the CMV, that's why you have to choose one with a good guarantee. Some manufacturers offer 2 and 3 years of warranty and others 5 years, so when buying, you should think about it.
It is especially ideal for a home with low humidity. It is not expensive, but not very economical for the heat losses it generates. The self-regulating CMV ensures the constant renewal of the air without external regulation to the system. But the diameter of the ducts and the power of the motor influence the air renewal. All this is adapted according to the number and the volume of the rooms where the extract units are installed.
There are humidity sensitive type A CMVs which are good value for money and ideal for renovation. They are mainly installed in collective housing and tertiary buildings. In a hygro A CMV, only the extract units are sensitive to humidity and the air inlets are only sensitive to pressure.
Then, the humidity sensitive CMV type B which has extract units and air inlets sensitive to humidity which allows a better control of the heat losses and to make more savings. They are mostly installed in new buildings and require a much higher budget than the hygro A and the self-regulating CMV. For the two types of humidity sensitive CMV, the air renewal is less and the incoming air is not filtered.
When you proceed to a reinforcement of the insulation of your house, the installation of a simple flow VMC is strongly advised to make it possible to evacuate moisture as effectively as possible, because a well insulated house is also more tight. And beyond a certain temperature the humidity in the air condenses and turns into water and this can have consequences such as infiltrations. This is also the case for houses built in compliance with the new thermal regulation RT 2012, which does not explicitly require the installation of a CMV and which sets high constraints in terms of air tightness.
It has many advantages, as for the cost, it is lower than the double flow system. Moreover, this CMV is very easy to maintain and the single flow B CMV allows to regulate the airflow according to the occupation or not of the places.
Its disadvantage is that it causes significant heat loss due to air renewal and can quickly increase your heating bill. And its continuous operation tends to facilitate the draughts in your house, it is hotter in summer and colder in winter.
The double flow CMV is a type of ventilation system for the house that allows to limit the heat losses at the level of the air inlets and outlets. It also has many advantages, because it is able to stir the ambient air of the house while recovering the heat it contains. It guarantees the quality of the air inside the house by not letting dust, pollen, mold or other bacteria enter from the outside.
Its disadvantage is that it requires rigorous maintenance to function properly. As it is necessary to replace its filters every 6 months and that it is also necessary to regularly dust the air vents and clean the ducts every 10 years. It also consumes a lot of electricity and can increase the bill. It can also be noisy and cause noise pollution in the house.
If you want to have healthy and bacteria-free air in your house, opt for the double flow CMV, because it offers many features made for that. On the other hand, if you want to save money and not pay more for your bill, opt for the single-flow CMV, because it is more economical and above all it is cheaper.
Check the fresh air inlets
Fresh air must enter your home for a CMV to work properly. Often, it arrives through air inlets placed in the jambs of your windows and doors. It is not recommended to block them. Just run your finger through them to check that the air inlets are not blocked, for this you should feel a slight draft.
Use toilet paper to check that the unit is working
You need to use a light material to check the operation of your CMV. Put toilet paper or a sheet of paper towel or paper itself in front of the exhaust vent of your CMV in the bathroom, kitchen or elsewhere. If the sheet sticks to the grille, it means that your VMC is sucking it in and working. However, if it does not, it is not working.
Clean the unit
It is imperative that you clean it from time to time, as it can be a source of very significant nuisance and vibration. You can also add plastic pads that can create a break in the vibrations. So cleaning is necessary to avoid the unpleasant noises that can reach there.
Tune your unit
Itis very useful to have one's CMV tuned up because over time, its operation deteriorates due to the aging of the installations and the occupation of the house. It is therefore necessary to have the system adjusted, so that the CMV will always be in good condition and will always function normally in relation to the use of the house.
Prefer acoustic inlets
On themarket, there are acoustic air vents, they are more expensive than conventional vents and also allow to limit the noise of the CMV. Very practical therefore in the rooms where silence is very important.
The best single-flow ventilation system depends on your needs and your budget. Read our buying guide to learn more.
Theoperation is very simple, in general, the air is extracted from humid rooms such as the kitchen and the bathroom, then it is rejected, through the exhaust ducts. On the living rooms are placed air inlets in height to ensure the renewal of fresh air.
Thisis obvious, it is much more prudent to ask for advice and have it installed by a professional installer, as he is the most qualified to guide you in the choice of a new one if you need to change your current CMV, but also to ensure its installation. The installer will also provide you with all the necessary information regarding its proper functioning and the steps to take for its maintenance.
Whenyour CMV has been installed for several years, the first thing to do is to check its efficiency level. And this is very simple, because you can just place a sheet of paper towel in front of each exhaust port and there you will see if it still works or not. In case it doesn't work anymore, then it's time to change.
Itis crucial to maintain it well, as this will ensure its longevity. You can clean the extract units and air inlets regularly with a little hot water with soap, as this will remove the dust that has built up over the months, but also the deposits generated by humidity. Then, you can also dust the fan in the motor block, as this is necessary to ensure its performance. And don't forget to have your installation serviced by a professional every 2 or 3 years.
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