How to choose the best kitchen hood with ventilation outlet: types, selection criteria, review of 7 popular models, their pros and cons

Circulation and drainage: what is it and why is it important?

When cooking, a lot of smoke, drops of fat and odors are released, and walls, dishes and furniture become covered with a coating that is difficult to remove. A hood can solve this problem. There are two main types of hoods:

• Recycling;
• The first type removes air through a filter and discharges it into the ventilated space.

The first type absorbs air, filters it and returns it back to the room. The second simply takes air from the room and discharges it outside through the wall (in a private house) or into a common ventilation duct (in a residential building), so the exhaust operation is considered more efficient - the air is purified by 99%.

Difference from other types of kitchen hoods

There are two types of kitchen hoods: flow-through and recirculating. Flow hoods (also called evacuation hoods) remove contaminated air through ventilation, while recirculation hoods clean it and return it to the room. The recirculation mode does not imply the use of any communications other than the power supply. It is easy to install such a hood; it does not require any special changes in the room.

The system works very simply: the contaminated air flow is sucked into the unit body and, after going through several stages of cleaning, is discharged back through special openings.

Design and operation of a hood with an air duct

The exhaust system is designed to get rid of unpleasant odors in the kitchen and protect furniture, walls and ceilings from soot and grease. When turned on, it recirculates the air in the room at least ten times per hour. Traditionally, a hood consists of a housing, a fan, a filter and an air duct.

Designing a system with exhaust air for ventilation is advisable! Typically, exhaust hoods are equipped with durable metal grilles that can be easily removed, washed to remove food particles, and reinstalled. However, there are models equipped with disposable filters - they need to be replaced from time to time.

Principle of operation

The main difference between duct and recirculation hoods is the ease of control:

1. When the device is turned on, the electric motor begins to draw contaminated air into the vent;
2. A filter installed on the surface retains product residues, preventing it from entering the system;
3. A surface-mounted air filter prevents food debris from entering the system; Unpleasant odors are removed through the ventilation system and replaced with fresh, clean air.

The more powerful the motor, the faster and more efficiently the air in the room is purified. At the same time, for high-quality operation of the device, a constant flow of fresh air is required through an open window or window sash.

Advantages and disadvantages

Kitchen hoods with an exhaust fan have the following advantages

• installed filter cartridges do not require replacement - it is enough to periodically clean them from accumulated grease and dirt;
• high efficiency - this technique is able to remove all unpleasant contaminants, regardless of particle size;
• They are easy to use;
• A low-resistance grease filter allows you to clean the air as quickly and thoroughly as possible;
• The units require minimal maintenance during operation;
• A wide selection of equipment will allow you to easily find exactly the device that fits perfectly into the interior of your kitchen.

In general, modern devices have no disadvantages. Particular disadvantages lie in specific models from different manufacturers - this could be:

• Increased noise level when turned on;
• high costs.

Myths about filters

Among owners of indoor air exhaust in the recirculation mode in the system, there are opinions about the benefits of different models of devices. Usually the debate is not about how recirculation differs from circulation, but about the effectiveness of filters and getting rid of contaminants.

Low filter efficiency

Even modern recirculating hoods will not be able to completely remove all odors. The removal and circulation of fresh air is impossible for many apartments due to contamination of the ventilation ducts. It is necessary to make a separate output, and this requires permission.

Any suspended or built-in hood has the main task of removing combustion products. Because their deposits on the furniture and walls will not add chic to the interior. A circulation hood can handle this.

That is, no matter how recirculation differs from circulation, removing odors is initially impossible. All equipment will cope with getting rid of soot and grease.

Recirculation devices are more expensive

Now for the math: a built-in exhaust system for a flow-through system costs at least 1,000 rubles; if you need to hide the air ducts, also add another 600 rubles for plastic pipes. Installation plus permit - additional 5,000 rubles. Total – 6600.

An exhaust hood without a ventilation outlet with two-stage filters will require their replacement, but no more than three cassettes need to be replaced annually, costing 450 rubles. That is, 1350 rubles per year. As a result, the kitchen hood can be used for at least 4 years at the same cost.

That is, a hood with recirculation is profitable; costs, taking into account the replacement of filter cassettes, are distributed annually.

Filters are hard to find

Initially, the opinion is incorrect: consumables, which include carbon filters, are manufactured by other companies, and they are often of better quality than those included with the equipment.

The built-in hood has several filters, but there is no markup on the brand, and buying cassettes is not difficult.

Filters reduce power

Another myth, not confirmed by numbers - no one has done research on this, especially measurements or comparison of the recirculation mode. Carbon filter cartridges are thin, they do not affect the efficiency of circulation in the hood. The grease settles on the iron screens in the equipment and is cleaned regularly.

Standards and requirements for kitchen exhaust systems

Based on the principle of operation, kitchen hoods are divided into two fundamentally different groups. A filter hood purifies the air in the room by forcing it to circulate through a built-in filter system. Thus, by-products are retained in the hood filters, and the purified air is recirculated back into the room. This group of hoods attracts attention with their low price, simplicity, compactness, low noise level and ease of installation - just attach the hood to the wall and plug it into an outlet for it to start working. The disadvantages are low efficiency and additional maintenance efforts, since the filter elements of the device require periodic cleaning and replacement. A hood with a ventilation outlet, as the name suggests, on the contrary, does not allow air to pass through itself, but takes it outside the room. This method allows you to qualitatively increase the level of productivity and efficiency of the device, but requires qualified installation of the air duct system. In this article we will look at the main issues of installing a kitchen hood with air ducts for ventilation.

The rules require compliance with a number of rules and requirements when choosing and installing a kitchen hood:

• The height of the hood installation above the work surface. This is very important for the operation of the device, since if it is installed too low, it will significantly increase contamination of the device with smoke and combustion products. On the other hand, a hood mounted too high will not be able to effectively remove pollutants from the air. For electric hobs and stationary stoves, the installation height is 65-70 cm from the work surface, and for gas stoves - 75-80 cm.
• Compare the power of the device with the volume of the room and the intensity of the work performed in it. Hood performance is the amount of air that the device passes through itself in one hour of operation. In an ordinary apartment or private house, where the kitchen is used for preparing food for the whole family, the volume of the room in cubic meters should be multiplied by k = 10-12 to determine the required power of the canopy.
• Other requirements for device noise and the use of fire-resistant materials must be met by the manufacturer, so when purchasing, make sure that the technical data sheet of the product contains information on compliance with current standards and GOST.
• If you are going to use a vent hood, it should be equipped with a filter screen or grill that will prevent dirt and grease from entering the vent.

Types and features of exhaust devices

The variety of hoods offered by manufacturers is sometimes amazing. On the market you can easily find a model that is optimal in cost and quality.

But for an unprepared buyer, choosing and installing such kitchen appliances will be a difficult and sometimes overwhelming task. Therefore, before going to the store or installing a hood, it is imperative to understand all the subtleties and nuances.

Sanitary standards and requirements

Any type of hood, be it a recirculation hood or a device with a ventilation outlet, must circulate a volume of air equal to 10-12 volumes of the cooking room in one hour.

This is a strict sanitary requirement that must be met. After all, open fire sources and heating appliances are actively used in the kitchen. And the humidity in the room is much higher than in other rooms.

As a result, the concentration of carbon dioxide, harmful impurities and fumes is constantly increasing, which will negatively affect human well-being.

When using a device connected to ventilation, it is necessary to ensure an influx of oxygen from the street. If this factor is not taken into account, a capsizing effect will appear. Its essence is that air will be drawn from the duct back into the kitchen

Another requirement is that the hood must be installed as close to the hob as possible. This is a minimum of 65 cm for an electric stove and 75 cm for a gas stove.

A prerequisite is the presence of a special grill on the device, where dirt and grease will settle. This will prevent waste from entering the ventilation duct.

Hood with ventilation outlet

Hoods that remove exhaust air through a ventilation shaft are the classic and most familiar models to most people. Thanks to the constant flow of fresh air, a person’s mood rises, his well-being improves, and his stay in the kitchen will become more comfortable.

Typically, exhaust devices provide forced ventilation, for which a fan is used. This approach allows you to quickly remove excess moisture from the room, which can harm the furniture set, unpleasant odors, various fumes, soot, excess carbon dioxide, etc.

In order not to pollute the atmosphere around the house, hoods use a special filter that collects most of the dirt.

The hood sucks in exhaust air and removes it from the room, for which the ventilation shaft of a house or apartment is used

The only drawback of built-in hoods with ventilation outlets is the complexity of their installation. After all, the device must be connected to the air duct. If the house does not have a ventilation duct, you will have to drill a hole in the wall.

Types of hoods with outlet

There are several types of such kitchen appliances. Hoods with ventilation outlets are divided into categories depending on the design of the device, the method of installation and cleaning.

Depending on the type of installation, the following devices are distinguished:

1. Mounted . They are divided into domed or flat. There are also inclined products on the market that can be unfolded if necessary. The wall-hung hood will fit harmoniously into both a large kitchen and a small room.
2. Embedded . Devices of this type are an ideal solution for small apartments. Their peculiarity is that they are built into the cabinet and act as its bottom. Some devices can expand to allow more air to be captured.

Owners of large kitchens prefer the island design of the hood. It is used in situations where the stove is not located near one of the walls of the kitchen, but in the center of the room. Island hoods are attached directly to the ceiling and allow you to create an original room design.

Among other things, a device for removing exhaust air is an important element of the kitchen. It not only absorbs harmful fumes, but also acts as a decorative element. Therefore, when choosing one type or another, you need to evaluate whether the desired model will harmoniously combine with the design of the kitchen.

It is necessary to choose one or another type of hood depending on the location of the stove and the dimensions of the kitchen.

Typical ventilation schemes in the kitchen

There are two main kitchen ventilation schemes: natural and forced. In the first case, ventilation is carried out using holes in the walls and open vents on one side and general ventilation ducts on the other.

In the second case, air exchange is carried out mechanically, by installing energy-dependent devices. The third, combined option is considered the most successful, in which there is simultaneously a natural inflow scheme, according to which air enters the room spontaneously, and forced exhaust through kitchen hoods.

According to the method of air purification, all hoods can be divided into 2 types - exhaust (supply) and recirculation. The latter are not connected by pipes and channels with ventilation ducts and operate autonomously

There is also a third type - combined units, which are equipped with double filters and an air duct, and can operate either connected to a ventilation shaft or autonomously.

Natural ventilation has one advantage: ensuring a comfortable microclimate in the kitchen (as in other rooms) does not require additional material costs.

But it has low efficiency. When cooking on an electric or gas stove, slow air exchange quickly dissipates harmful odors.

Forced air units are much more efficient, but the mechanical system requires equipment that depends on the power source.

Hoods and recirculation units do a great job of cleaning dirty air and removing odors, but they don't cover the area below the ceiling, where fumes and grease particles are also trapped.

Taking these features into account, a combination of exhaust systems and natural ventilation systems was used.

Read about typical kitchen ventilation schemes and options in this article, which we advise you to read.

Kitchen ventilation in a private house

A private cottage, like an apartment building, is initially designed with an organized natural ventilation system. Ventilation ducts are primarily installed in those rooms where heat and moisture excesses, unpleasant or specific odors, etc. will appear. First of all, exhaust ducts are installed in the bathroom, kitchen, and furnace room, because this is where most of the listed air pollutants are formed. Supply ventilation is carried out naturally or through wall and window ventilation ducts.

Effective ventilation in cafes

Kitchen ventilation in a private house performs the following functions:

• removal to the street of gases hazardous to health that are formed during the cooking process, for example, carbon monoxide that appears when using a gas stove;
• removal of excess thermal energy that appears in the kitchen during the use of kitchen equipment (stove, oven, electric kettle, refrigerator, water heater, steamer, etc.);
• removal of air flow containing excess water vapor, which has a particularly negative effect on furniture, wall decoration, and ceilings;
• Together with the removed air, ventilation in the kitchen with a hood allows you to get rid of particles of fat, oil, soot or smoke;
• removal of odors arising during cooking.

Kinds

There are several types of hoods. Each of them has its own characteristics and purpose.

Types of autonomous hoods

Depending on the mounting system, recirculating hoods are flat, mounted above the stove and have low capacity. There are also built-in hoods that are integrated into furniture elements placed above the hob. They are compact and have greater productivity than the first ones.

Hanging hoods are placed under kitchen cabinets. In this category there are slider options with a working surface that extends forward. Corner hoods are placed at a certain angle to the mounting surface.

They are ergonomic, easy to use, highly efficient, and have a low noise level.

A flat hood is a classic option. They fit well into any interior, are inexpensive, and have a wide range of products.

Depending on the location of installation, hoods are divided into wall, corner, and island. The first are used to complete zones located near the wall, the second - at the junction of walls. Island units are an ideal option for spacious kitchen spaces.

Technical characteristics overview

When purchasing a new hood or replacing an old one, you need to familiarize yourself with the features of specific models. It is necessary to pay attention both to the design and design, and, first of all, to the technical parameters on which the efficiency of the ventilation equipment depends.

Installation efficiency calculation

In order to correctly navigate the choice of an effective unit, you need to know the exact area of ​​the room. Typically, both the capacity and the desired size of the kitchen are indicated in the technical data sheet of the product.

For example, the productivity of Krona Camilla 600 is 550 m³/h (in recirculation mode - 385 m³/h), so it is recommended to use it to serve a room up to 11 m² (ceiling height 2.5-2.7 m).

If you use a less powerful device for the same area, it simply will not cope with the task, and a more powerful hood will waste energy.

To calculate the performance yourself, multiply the volume of the room by the number of recirculation cycles and include the error factor. In the kitchen, the minimum number of recirculation cycles is 12; KP is 1.3. Therefore, to determine the required volume, you should consider:

11 x 2.5 x 12 x 1.3 = 429 m³/h

It can be concluded that when using the Krona Camilla 600 awning, to ensure sufficient air exchange over an area of ​​11 m², it is better to use the exhaust mode for ventilation and use recirculation only as an additional function.

When calculating the exhaust performance of a ducted canopy, a factor of 1.3 is typically used, while a slightly higher factor of 1.7 is used for recirculating models.

Is noise level that important?

The second important parameter that you should pay attention to is the noise level. If the owners of an apartment or house spend a lot of time in the kitchen, it is desirable that it be minimal. This point is also important for those who live in one-room apartments where the living room is combined with a kitchen.

Strong and irritating sounds negatively affect a person’s well-being, so increased demands are placed on household appliances equipped with fans and motors.

Modern devices operate quite quietly, as they are equipped with special acoustic noise protection. Sounds in charcoal hoods can come from the fan, motor, and air moving inside the structure.

When using ventilation units, noise often occurs due to improperly connected ventilation ducts.

If you want to create a comfortable atmosphere during and after cooking in the kitchen, give preference to models whose noise level is in the range of 50-55 dB. The quietest devices operate in the range of 35-42 dB.

The high price of a model does not mean that the hood will operate quietly. On the contrary, expensive equipment is more efficient than cheap equipment, so it is often expensive devices that create a lot of background noise - above 60 dB. For example, the Neff D55ML66N0 (36 thousand rubles) has a noise level of 72 dB, and the Elica Hidden HT (51.5 thousand rubles) has a noise level of 62 dB.

Convenient control and adjustment

You will need to use your kitchen hood every day, so you should choose a model that is easy to understand and operate. All controllers can be divided into two main categories: manual and remote.

Manual (or mechanical) can be different:

• Slider (increasingly rare);
• Push-button (most common type);

Expensive models are equipped with electronic controls with touch contact panels for issuing commands.

Models in the mid-price segment are made traditionally: on the front panel there is a row of buttons with which you can set the desired mode (diversion or recirculation), change the speed, and turn on the backlight.

Modern programmable hoods have a number of useful additional functions with delayed action. For example, the interval ventilation mode will continue to purify the air even without your presence at specified intervals.

Remote control models have a remote control that allows you to make almost all settings, but also have buttons or a touch screen on the front to select operating modes. The more convenient the method of operation, the more expensive the equipment.

Important Features and Options

In addition to the basic technical parameters, there are a number of features that can be very useful during operation. But if additional functions are not needed, you can save a lot on the purchase, since electronic filling, various modes, and programming increase the cost several times.

Photo gallerySeveral LED or halogen lamps placed on the lower plate provide effective illumination of the hob. They compensate for the lack of overhead light arising from the upper cabinets. The lion's share of all hoods are universal devices that can operate in both modes. If for some reason there are problems with removing contaminated air for ventilation, use an independent mode with filtration. If the device operates at the same speed all the time, the cleaning intensity will always be the same - both when making coffee and when frying meat. The presence of several speeds is timely for those who cook frequently, a lot and variously. Replaceable consumables include carbon filters that thoroughly clean the air. Thanks to the clogging indicator, you can see when filter cartridges or seals need to be replaced. Thanks to the contamination indicator, you can see when the filter cartridges or gaskets need to be replaced.More expensive models usually have such indicatorsWorking area lightingOperating modes: exhaust and recirculationNumber of exhaust speedsFilter contamination indicator

Competition for hoods in the household appliances market is very fierce, so manufacturers are racing to come up with new features. For example, in some models you can regulate not only the intensity of air intake, but also the degree of illumination of the space, and also set the speed change in automatic mode.

Corner hoods

At the right angle. Corner devices are installed above the corresponding working surfaces. Since this solution is quite rare, the range of hoods is small. However, you will certainly choose a suitable option that matches the style of your kitchen.

Hood Premio Angolo/SP EG8 X/V A100 (Faber) with a capacity of 1130 m3/h (93,500 rub.)

KA2000 (Best) has four speeds (88 thousand rubles.

Important information

Photo: Miele
The DA 6000 W (Miele) is designed for installation in a false wall and is part of it when not in use. During operation, the visor is lowered to collect fumes (329 thousand rubles)

1. Noise level. The average is 50–60 dB. This parameter depends not only on the performance of the hood (each power level has its own value), but also on the filtration method (the noise increases during exhaust), the material and cross-section of the air ducts, the quality of installation, etc.
2. Lighting. The hood can serve as a backlight for the hob. Modern models are usually equipped with halogen lamps or LEDs. The quality of lighting is easy to check in the store. Make sure both the rear and front burners are well lit. A useful addition will be the function of adjusting the brightness of the light. Another convenient option is a smooth increase in lighting intensity.
3. Control. It can be push-button, slider, touch, or even a joystick. Choose the option that is most convenient for you. Let us just note that the buttons and slider are quite reliable, and the touch panel is easy to clean, because it is absolutely flat and there is simply nothing for dirt to catch on. Some models are equipped with a remote control: you can turn off the device without being distracted from dinner. In the presence of
4. From the LCD display you will always receive information about the operating mode and performance of the device, light level, etc.
5. Prices. The most affordable are built-in and flat hoods; they can be purchased for 2–3 thousand rubles. The price of fireplace appliances also starts from 2 thousand rubles, on average it is 5–7 thousand rubles. The cost of premium models built into countertops and islands can exceed 100 thousand rubles.

Types of filtration exhaust devices

The variety of recirculating kitchen hoods is as great as that of classic flow-through devices.

See also: Telescopic kitchen hood

Depending on the location and method of installation, the following types of hoods are distinguished:

• Vertical;
• Horizontal, mounted;
• drowned;
• slider;
• island.

Horizontal wall-hung hoods without an air exhaust system are installed in the classic version - open placement above a gas or electric stove. Their big advantage is their small size, which allows them to be placed on the kitchen countertop.

Vertical kitchen hoods with air recirculation can be called an innovation in this segment of household appliances. They are installed behind the hob or in the countertop. If necessary, they can be positioned vertically, at a slight angle, behind or to the side of the cooking zone.

Telescopic hoods (retractable or retractable) have reduced dimensions in the non-working position. When you turn on the device, its working surface doubles thanks to the retractable panel.

Built-in models allow you to preserve the design when placed in a kitchen cabinet. The cabinet itself can be fully used for its intended purpose, since there are no wires in it.

Island models of recirculating hoods amaze with their variety of shapes and sizes. They are installed above the stove and attached to the ceiling. The absence of ventilation ducts allows you to “disguise” the hood without relegating it to a decorative element of the room.

Advantages of recirculating hoods

After listening to a lot of laudatory odes about the power and efficiency of exhaust hoods, you can decide that a hood with recirculation is the worst option. However, this is not at all true. A lot depends on the type of device, its manufacturer, model, price and other parameters. Recirculating hoods for the kitchen have many advantages, which many do not pay attention to, because they are overshadowed by the main drawback - the lack of an air duct, and therefore the possibility of removing contaminated air outside.

However, if you analyze all aspects of the operation of circulation exhaust devices, this disadvantage may not be as significant as it seems at first glance. For example, even someone who has never dealt with installing air purifiers can install this device, because there is no need to lay out the air duct. Models operating in recirculation mode are lightweight and compact, and therefore take up much less space than diverter models. Many of them are mounted in kitchen cabinets. The air duct pipe will not disturb the interior of the room. They work much quieter and do not cool the air in the room in winter.

After reading the following sections, you will learn everything about the circulation mode in the hood and will be able to draw your own objective conclusions about its real advantages and disadvantages.

Principle of operation

If you look in the dictionary, you can find out that recirculation is the repeated use of the same volume of air in a closed system and its repeated processing. How is this principle implemented in a kitchen hood?

When you turn on the exhaust device during cooking, it, with the help of powerful turbines and fans, begins to suck in the air coming from the stove. It is saturated with water vapor, fat particles, combustion products and other impurities. Before returning to the room again, the air goes through two degrees of purification - coarse and fine. The grease filter installed immediately behind the working panel is responsible for the first. It traps particles of fat and evaporation, preventing them from penetrating inside the mechanism. Unpleasant odors and combustion products are adsorbed by a carbon filter element. After this, the purified air is returned back to the kitchen through special holes in the upper part of the device.

Speaking about the principle of operation of a recirculation hood, one cannot fail to mention its main working elements - filters. Since there is no possibility of air removal, they are responsible for the quality of its cleaning. Grease removal cartridges are available in disposable and reusable versions. Non-woven, padding polyester or paper elements, which can be used only once, are usually installed in budget models. When choosing them, you should keep in mind that filters will have to be replaced approximately once every 2-4 months. Having saved on the purchase of an exhaust device, you will periodically spend money on its maintenance.

Acrylic filters are an intermediate option. They can be washed and used several times, but they wear out quite quickly. The best are reusable filter elements made of aluminum foil or stainless steel. They are not changed, but only cleaned when they become dirty. High-quality filters will last as long as the air purifier itself.

Previously, carbon filters were exclusively disposable. But now elements have begun to appear that can be cleaned and reused. However, it is still difficult to find them on sale, and they are quite expensive. Therefore, you should prepare for the fact that the cartridges will have to be changed every few months. How often to do this depends on several factors: the quality of the element, manufacturer, cost, intensity of work. The service life of carbon filters can range from 3 months to a year.

Which is the best hood to choose?

Having decided on the location of the hood, you need to pay attention to the power of the device. The quality of ventilation and air purification depends on this parameter.

Interesting: in the Russian Federation there is a standard for air exchange in the kitchen. According to it, the air must be replaced every 12 hours.

To calculate the power of the hood for your kitchen, you need to multiply its area by the height of the ceiling, and then multiply the resulting number again by 12. Add 30% to the result (losses due to the length of the ventilation duct and bends of the air duct). The final number is the power required for your kitchen.

Where and how to remove the air duct

Most often, the duct from the hood is connected to a vent, which is ventilated naturally (due to draft). This is inaccurate, since with this method most of the grille is tightly closed by the ventilation ducts, and there is insufficient air exchange through the remaining openings.

Most of the ventilation grille is closed, and ventilation in the apartment is insufficient

It is a good idea to connect the duct to a separate ventilation duct. In this case, install the grille as in the picture above.

If there is no separate ventilation duct, but there is an external wall nearby, you can lead the pipe to the street by placing the grille outside. These are two ways to ensure adequate ventilation and ensure that your hood is working properly.

How to take it outside

In order to install the hood and connect the wires to the wall, you need to make a hole in the wall. And this is the only difficulty. Then an air duct is inserted into this hole, sealing it with a solution. From the outside, the hole is closed with a grill to prevent the entry of debris and the settlement of birds and small animals.

One example of a kitchen hood with air outlet through the wall

To prevent outside air from blowing into the room, install a check valve (indicated diagonally in the figure above). By the way, it is best to install it at the junction of the air duct with the ventilation system so that odors from the pipes do not penetrate into the room.

The check or anti-return valve for air ducts looks like this:

A duct check or non-return valve is a lightweight plastic or metal plate. It is movably attached in two places to the pipe - top and bottom, the blade is supported by a light spring. When the hood is not working, the valve blocks the flow of outside air. When the hood is turned on, the air flow pushes the plate forward, pushing the spring back. As soon as the hood is turned off, the plate returns to its place under the action of a spring. If you install a hood without this valve, the kitchen may be too cold in winter; outside air will easily penetrate into the room.

So that the hood does not interfere with natural ventilation in the kitchen

By the way, using a tee and a check valve, you can install the hood so that it does not interfere with natural ventilation in the kitchen. To connect the hood, you need a special ventilation grille, a check valve and a tee. A tee is attached to the ventilation grille, air from the hood is connected to its lower inlet, and a check valve is placed on the free outlet; it is just such that the blades overlap when air passes from the pipe (in the figure below).

Non-return valve for normal natural ventilation in the kitchen

How does such a system work? When the hood is turned off, the petals of the check valve are bent, air from the kitchen enters the ventilation duct through the grille and the open outlet of the tee. When the hood is turned on, the air flow from the hood unfolds the valve plate and air enters the ventilation system. When the hood is removed, the springs again open the air through the tee.

Outwardly, such a system does not look very attractive, and it will have to be disguised in some way. However, this is the only way to connect the hood to the only existing ventilation outlet without compromising air exchange.

Flow-through air vents

Evacuation kitchen hoods (with ventilation outlet) are more powerful, but this equipment has its drawbacks:

• Installation of a check valve is required;
• Required to be connected to a ventilation shaft;
• The supply and flow system removes warm air in winter, instead cold air is supplied from the street, this will negatively affect heating, in the summer everything happens the other way around;
• There are separate expenses for using a kitchen hood without recirculation if the air duct is located remotely from the entrance to the ventilation system;
• Air circulation from open windows is required at all times.

Therefore, the installation of a hood of this type is most often used in specialized premises of catering establishments, in which the equipment justifies the installation costs. In apartments, especially small ones, it is better and more efficient to use an exhaust hood without venting to the ventilation.

Installing a hood in the kitchen with your own hands: process and installation steps

To ensure air exchange and get rid of unnecessary odors in the apartment, install an exhaust system. And you can do it yourself, without the help of specialists. This is confirmed by our own experience. Knowing how to install a kitchen hood with your own hands, you will save a round sum in the family budget.

Considering the principle of operation, there are 2 types of hoods:

• flow. The device sucks in contaminated air and discharges it directly into the ventilation chute. This system is the most effective option for air purification.
• Circulation. The device passes air through purifying filters, and then the same air, but already purified, is returned to the kitchen.

When using a circulation system, you do not need a duct, and the installation of the device itself is very simple. But, believe me, this is of little use. Filters constantly become clogged and must be replaced regularly. In addition, they cannot cope with the volume and do not properly clean the incoming air.

Having decided on the location of the hood, you need to pay attention to the power of the device. The quality of ventilation and air purification depends on this parameter.

Interesting: in the Russian Federation there is a standard for air exchange in the kitchen. According to it, the air must be replaced every 12 hours.

To calculate the power of the hood for your kitchen, you need to multiply its area by the height of the ceiling, and then multiply the resulting number again by 12. Add 30% to the result (losses due to the length of the ventilation duct and bends of the air duct). The final number is the power required for your kitchen.

The height of the hood above the electric stove must be at least 70 cm. Above the gas hob, the device can be installed at a distance of at least 80 cm.

Before installing the exhaust system, I had to consult with professionals on this issue. Some of them told me that the distance between the gas stove and the hood should be at least 70 cm. This should be enough for all the fumes to escape.

However, keep in mind that a gas stove produces hotter air than an electric stove, so the power of the device may not be enough to suck in combustion products. In addition, such temperatures can damage filters and other parts of the exhaust system, which affects the efficiency of the device. You decide for yourself whether it is worth the risk while maintaining a minimum distance.

The distance between the hood and the hob also depends on the height of the person who will stand at the hob. The system must be fixed at such a height that a person’s head does not hit the device body.

For installation and installation of the exhaust system you need:

• Venturi - for air outlet into the ventilation duct.

Tip: it is better to choose a chimney made of plastic rather than aluminum. It looks nicer and is quieter

• Hammer drill or impact drill (for concrete walls);
• Clamps (2 pcs.) – for attaching the chimney to the eaves;
• knife;
• Circular saw and emery board (for cutting and finishing the pipe);
• Jigsaw - for making a hole in a cabinet or shelf (if the system is built-in);
• screwdriver (for a wooden wall);
• ventilation grille;
• sealant (silicone) – for sealing gaps and joints between structural elements.
• Level, tape measure, marker - for marking;
• Screwdriver;

Mandatory condition: carry out all work wearing gloves and safety glasses!

If the system operates according to a flow-through design, an air duct with a diameter of at least 120 mm must be laid in the ventilation shaft. It should not be narrowed, bent or stretched in any way, otherwise the capacity will be lost. Round and square diffusers work equally well.

Note: It is better to buy smooth ducts than corrugated ones. This will significantly reduce the noise level when the device operates.

If the hood operates in circulation mode, there is no need to connect it to ventilation. The main component, the filter, will have to be purchased separately.

An important part of the installation is calculating the distance from the hob to the hood so that it complies with regulations and does not interfere with food preparation.

Built-in models are not attached to the wall, but are installed in the kitchen cabinet itself. Once installation is complete, attach a protective cover to the cabinet to hide the wires.

The hood screen should be slightly wider than the hob to ensure that the exhaust gases are completely absorbed by the hood.

Detailed installation steps are given in the table below.

It is better to use a plastic pipe as an air duct than an aluminum one. It looks more aesthetically pleasing, and the material is durable, easy to install and quiet in operation, since its smooth surface does not interfere with the free flow of air.

Carefully pull the duct through the holes you made so as not to damage the pipe itself. At the junction with the vent, carefully cut off the excess ductwork, leaving a small margin. Cut off a few corners and then bend them inside the vent. When pulling the air duct, do not make bends, and if they cannot be avoided, make an angle of no more than 90°, otherwise the efficiency of air intake will decrease.

Securely fasten the air ducts and secure them with clamps. Don't forget to seal the gaps in the joints with silicone so as not to lose traction.

To ensure that your hood works properly and eliminates the risk of fire, clean it of carbon monoxide at least twice a year. Follow the safety rules for your exhaust system and it will serve you for a long time and safely.

Connecting the hood to electricity

This step is the simplest. It is very good, when you are initially planning a kitchen, to carefully consider the location of all electrical sockets and sockets.

If you don't have a clear exhaust outlet, you'll have to install one. To do this you will need the following materials:

• VVGngls 3 * three-core cable 2.5 mm2

Use a cable of this brand (index Ls) in your home electrical system.

• Standard 16A grounded socket

The hood, unlike other kitchen appliances, is a low energy consumption device. It is not necessary to correctly pull separate wiring underneath it directly from the distribution board.

It turns out that you can connect the device from a common group of sockets with the nearest distribution panel.

Pull the mounting boxes or conduit out to the location of the future outlet and install the outlet box.

This outlet is located at the top, almost under the ceiling, slightly above or to the side of the hood itself. The choice of a specific location depends on the length of the cable and the requirement for the minimum height of the exhaust device above the stove.

This often means cutting a hole in an adjacent kitchen cabinet.

You then remove the insulation from the cable, label the wires, and connect them in a junction box.

All that remains is to connect the outlet correctly.

You have connected a kitchen appliance. Let's go to the channel.

Correct connection of the air duct to the ventilation system

For this you will need:

• plastic hoses

• offset check valve

• tee

As a result, you should end up with a project like this.

How does it all work? When the hood is turned off, the valve will be open and warm air will be able to bypass the duct. As soon as you turn on the hood, the valve closes automatically, cutting off the air supply to the room.

All odors from the hood can escape freely. When you turn off the air duct, the pressure in it is released and the valve automatically opens, connecting the ventilation duct to the apartment.

How kitchen hoods work

Regardless of the type of device, the basic principles of operation are identical:

1. Air suction is carried out by a motor with an impeller.
2. The streams then pass through the first coarse filter. Fat, soot and large particles settle on its surface.
3. At the next stage, the air undergoes fine cleaning. To do this, use: paper, acrylic and carbon filters. In flow-through systems, these filters may be absent or they can be removed by the users themselves, since the first level of air treatment is sufficient to discharge them into the ventilation system.
4. In recirculation devices, air flows back into the room through channels located on the sides. While in the case of diverters it moves into the ventilation shaft.

Regardless of what type of device you choose, it is important to install and connect correctly. The operation of the system and its productivity depend on the quality of work performed. Also, do not forget about service. Change filters and clean the system in a timely manner. You can order the full range of services from the experts of our company. Just fill out the form on the website or call.

The use of ventilation pipes for kitchen hoods

The key to a beautiful and comfortable kitchen is to keep it spotlessly clean. Regular cleaning and fresh air are important. Conventional ventilation is not enough here, since cooking produces moisture and combustion elements that can settle on walls, ceilings, floors and furniture. A ventilation hood can largely solve this problem. This device requires proper installation, especially when connected to a ventilation duct. The correct choice of air duct for the hood will significantly increase the efficiency of ventilation.

Properly selected and installed air duct will increase the efficiency of the kitchen hood

Every home should be equipped with a kitchen hood. This is necessary not only for comfort, but also for the safety of people, since carbon dioxide and moisture are released during breathing. In addition, cooking produces decomposition products such as soot, grease, gases and moisture.

As a result, moisture settles on furniture and walls, forming mold, soot and smoke contaminate surfaces, and combustion elements such as carbon dioxide lead to fatigue, respiratory irritation, poor health and decreased productivity. Carcinogens produced during frying can cause poisoning. That is why it is so important to install a ventilation hood, the effectiveness of which largely depends on the choice of ventilation ducts.

The evolution and development of air ducts for kitchen hoods

In multi-storey buildings built during Soviet times, apartments had a small area. Ventilation in such rooms removed not only harmful substances from the kitchen and bathroom, but also air from living rooms. The ventilation ducts were then built directly into the walls of the buildings. Single-family houses had no ventilation at all, and residents were saved from the harmful effects of carbon dioxide by a common chimney built into the stove. This is where the products of fuel combustion and decomposition elements go during cooking.

The exhaust duct is usually not enough, so ducted air exhaust is added.

Fresh air in old houses and apartments usually entered through poorly fitted doors and windows, and soot and odors gradually accumulated on the walls and ceilings, so whitewashing was required every year. In some apartments, ventilation ducts were prototypes of kitchen hoods, and the same ventilation was installed in bathrooms and toilets.

In modern homes, in addition to the exhaust fan, an additional ventilation system is installed. This could be an exhaust system or a supply and exhaust system. In energy-efficient houses, a mandatory condition is the installation of a supply and exhaust system with heat recovery.