How to choose a ventilation box for a kitchen hood

It is essential to select the proper ventilation box for your kitchen hood if you want to keep your home cozy and healthy. A kitchen hood, sometimes referred to as an extractor hood or range hood, is essential for eliminating moisture, odors, smoke, and grease produced during cooking. But not all ventilation boxes are made equal, and choosing the right one necessitates taking a number of things into account.

You should evaluate your kitchen’s size and design first and foremost. It is important that the ventilation box you select fits the size of your cooking area. Take into account the dimensions of your cooktop or stove and the space that will be available above it for the hood installation. A ventilation box that is too big could be unduly large and overwhelming, while one that is too small might not be able to adequately capture all the fumes and particles.

The kind of cooking you usually do in your kitchen is another crucial factor to take into account. A ventilation box with a higher extraction capacity is required if you cook foods that release a lot of smoke, steam, or grease on a regular basis. However, if you cook in a less extravagant manner and generate less smoke, a regular ventilation box might do.

A ventilation box’s efficiency and noise level are also important considerations. To guarantee efficient air filtration, look for models with high extraction rates and low energy consumption. Additionally, take into account the ventilation box’s noise level, particularly if your kitchen is open-plan or close to other living areas. To reduce interruptions during meal preparation and social gatherings, choose a model that operates quietly.

Lastly, remember the importance of design and aesthetics. Not only should your ventilation box be useful and practical, but it should also blend in with the design and aesthetic of your kitchen. There are many options available to suit your taste, whether you prefer a more traditional appearance or a sleek and minimalist design.

Considerations Features
1. Size Choose a box that fits your kitchen hood and space.
2. Airflow Ensure the ventilation box can handle the airflow from your hood.
3. Noise Level Look for quieter models to avoid disturbances.
4. Energy Efficiency Opt for energy-efficient boxes to save on electricity bills.
5. Filtration Consider if the box has adequate filters to trap grease and odors.

Association of air ducts for kitchen hoods

Three different kinds of boxes are used to connect the hood’s output pipe to the vertical mine’s hole:

  • Flexible aluminum corrugation type "Aluntent";
  • channels of PVC plastic round and rectangular cross -section;
  • Metal boxes of various shapes.

Note: Air ducts from different materials, such as fabric or three-layer with sound insulation, are typically used in ventilation systems. An extensive summary of ventilation pipes can be found in a different article.

We will now examine each category of kitchen exhaust boxes in detail, outlining the features, benefits, and drawbacks of each product.

Aluminum corrugated pipes

A flexible channel is a soft wire frame that has a thin layer of aluminum foil covering it. To improve sealing, a layer of polyester is applied from above. The pipeline is compressed when it is shipped and sold, and it is stretched to the required length (up to five times) after unpacking.

Technical details about the duct:

  • The thickness of the wall is up to 100 microns, the cross section is round;
  • maximum operating temperature – 250 ° C;
  • The permissible bending radius is 0.7D (D – diameter);
  • line of diameters: 80, 100, 110, 120, 125, 130, 140, 150 mm.

The primary selling point of aluminum sleeves is their reasonable price; one meter of stretched air duct with a diameter of 100 mm costs roughly 50 rubles. (0.9 u. e.). It is simple to select the ventilator for the output diameter of the hood hole and ventilation grill because of the saturated series of sizes.

Installing the hood’s corrugated duct is an easy and quick process. After the pipe is stretched to the necessary length, one end is installed on the exhaust unit fitting and the other end is placed on the grille. After that, the installation is completed by fixing the corrugation with regular clamps.

Note: You can cut and stretch the pipe further if the sleeve’s membrane becomes damaged. However, the ends of the second corrugation won’t emerge straight; a rigid intermediate pipe is required.

The drawbacks of adaptable channels

  1. The appearance of aluminum corrugation does not satisfy modern interior design requirements. The box is suitable for hoods in the country, in a summer kitchen or apartment with a conventional repair. In other cases, the pipe must be hidden behind a decorative casing or drywall skin.
  2. The wavy structure of the walls creates increased resistance to the air flow. The efficiency of the fan is reduced.
  3. For the same reason, more fat deposits are delayed inside the channel. It is unrealistic to clean the corrugation, it’s easier to replace.
  4. Aluminum foil is easily damaged by any sharp object.

The final unpleasant moment is when the corrugated triber’s hoods start to make a lot of noise. The cause is a wave profile that resists air movement combined with the vibration of thin, flexible walls.

Plastic ventilation boxes

PVC, or white polyvinyl chloride, is used to make air ducts. Since the pipeline is not curved, couplings, nipples, knees, tees, and different adapters are used to join the different sections of the ventilation network. Features of boxes made of plastic:

  • the maximum temperature of the transported environment is 200 degrees;
  • The shape of the section is round, rectangular (flat);
  • The diameters of the round channels suitable for hoods – 100, 125, 150 mm;
  • “Cherry” dimensions of flat boxes – 55×110, 60×112, 60×204, 90×220 mm;
  • The length of the standard section is from 35 cm to 2 m.

Citation. Here is a size indication for the household series pipes. You can order the manufacture of non-standard products, like a square channel measuring 100 x 100 mm or fabric measuring Ø180 mm, for a fee. Even though you only need one to three meters of duct to connect the hood, using the existing dimensions makes the process easier.

There are two methods for connecting plastic air ducts to fittings:

  1. The round section is put on the outside on the response of the mounting element – the withdrawal, tee or nipple.
  2. Rectangular pipes, on the contrary, are inserted into fittings. Clushes are used to dock straight sections.

In both situations, the silicone material completely seals the joint. The ventilator’s section can be changed at any time by applying a tee with different conclusions or installing an angular or straight adapter.

Plastic is substantially more expensive than corrugated diameter corrugations. About 180 rubles will be spent on Ø100 mm meter pipes. (3.15. e.), 110 x 55 mm rectangular box of the corresponding section – 185 rubles. (3.3. e.). Here, the cost of the shaped parts that are a part of the scheme still needs to be added.

Additional drawbacks of plastic vents:

  • The color scheme is limited to light shades, it is unrealistic to find black pipes;
  • Accordingly, dust and other pollutants are clearly visible in the duct;
  • The plastic is afraid of overheating over 200 ° C and is able to burn independently;
  • Over the years, polyvinyl chloride turns yellow and loses its appearance;
  • The walls of flat boxes are bend at the junctions, a gap 1-4 mm wide is formed, as shown in the photo.

Hint. It is acceptable to use short screws for a high-quality flat channel connection, as the master does in the video (which we watch below). The fitting and box walls are securely pulled by the fasteners.

We list the benefits of plastic ventilation systems as follows:

  • satisfactory appearance;
  • low resistance of air flow due to smooth walls;
  • resistance to mechanical and chemical influences;
  • low noise level during the operation of the hood;
  • Durability, small weight of the structure.

Metal channels

Four different kinds of metal pipelines are used to transfer contaminated air from the hood into the natural ventilation mine:

  • from galvanized steel;
  • made of painted metal;
  • from stainless steel;
  • From copper.

The air duct section is square, oval, rectangular, or round. There is an extremely large selection of sizes, and the parts are connected using shaped pieces that resemble plastic channels.

Steel air pipelines have aesthetics as their primary benefit. Almost any kitchen interior can accommodate the copper or stainless steel extract box pictured in the picture. The galvanizing gaps are an exception, as their external coating is rapidly clouding without compromising its anti-corrosion properties.

Additional benefits of metal boxes include:

  • strength, long service life;
  • low noise;
  • satisfactory roughness of the walls, aerodynamic resistance is low;
  • The metal easily withstands heating up to 500 ° C, does not burn;
  • Polymer or zinc coating protects the surface from corrosion.

The primary disadvantage of metal ducts is their exorbitant cost. The price of a meter of Ø100 galvanized channel is at least 180 rubles (3.15. e.), but it cannot be opened completely. Not including style, a comparable stainless steel box costs about 530 rubles/m P. (8.1 e.).

Products with a thin, leafy metal coating and a colorless polymer (polyester) are a compromise. Copper and stainless steel are far more expensive than an air carriage like this one.

Ventilation iron boxes become less flexible due to weight, but not significantly. The plastic can be up to 2 mm thick, while the metal of the air duct is only 0.5–0.6 mm thick, so the difference is negligible.

Recommendations for choosing an air duct

The cost is still a major factor in homeowners’ decisions; the ventilation systems’ appearance and functionality are becoming less and less important. Here, flexible corrugation unquestionably prevails since it requires no fittings and is significantly less expensive than the other options.

Allow us to share our suggestions for selecting a ventilation box for your hood:

  1. 2 types of channels are suitable for the outer laying – plastic and metal. The former are cheaper, but they look worse, it is better to hide them above the cabinets or behind a decorative cladding.
  2. For a hidden gasket, you can take any air duct: corrugation, PVC, galvanizing. If you are not concerned with the noise level, put a cheap aluminum sleeve.
  3. In a summer house, summer kitchen or verande with a stove, connect an hood with a corrugated triber. Plastic in such rooms is quickly polluted, it is quite difficult to remove yellowness.
  4. If an expensive repair is made in the apartment, you can’t save and disfigure the interior. Select a steel box, fittings and a bars to the color of the hood. Stainless stainless steel is perfect for a nickel.

Suggestions. White plastic can be made yellow-free in one method. Try using acetone or a brand with a 647 brand to clean the areas; these substances break down the plastic’s outer layer. The deeply embedded pollution is too old to be removed.

Correct connection of hoods

Draw a connection diagram of the unit’s exhaust opening with a ventilation shaft so that you can buy the appropriate amount of pipes and connecting components. Simple guidelines to follow:

  1. Ideally, the total length of the boxes should not exceed 2 m: 1 meter in a height of + 1 m horizontally to the receiving hole. With a larger length, the exhaust performance will decrease (although the user does not notice the difference, since there is nothing to compare with).
  2. The optimal number of turns by 90 ° is two. The more knees, the weaker the fan “pulls” due to an increase in the resistance of the air ducts.
  3. Think about the gasket route so that the duct does not intersect with a gas pipe summed up to the plate. If the intersections cannot be avoided, go around the riser using the taps of 45 °, and not the straight angles.
  4. Use round channels if possible, from the point of view of aerodynamics, their throughput is higher. Real plus: on the rounded surface, less dust is collected than on a flat.
  5. No complex formulas are needed to calculate the diameter or size of a square box. Focus on the cross -sectional area of the output of the hood – the air supply should be the same (or more).
  6. If the total length of the ventilator does not exceed 2 m, the cross -sectional area can be reduced by 15% without a noticeable deterioration in the performance of the unit. But keep in mind: the household device will become stronger to make noise.
  7. With the length of the channels of more than 2 m, it is impossible to reduce the size of the pipe – the hood will significantly lose in power, and the electricity will “wind up” more. And in general, when the plate is located far from ventilation, it is necessary to put the recirculation island hood without any channels.

It’s crucial to leave an opening for natural ventilation when connecting an umbrella because the majority of kitchens only have one ventilation shaft. That is, as shown in the picture, the channel is attached to a unique flange using a lattice.

Reference: The natural air exchange within the house will cease if the box completely seals the exhaust hole. The impeller of the fan and the fat filter on the hood are obstacles to air flow that the mine’s traction cannot overcome.

The alternative method for facilitating ventilation with an inoperable extractor is to install a tee featuring a check valve in lieu of a grate. The fan’s damper will slam shut when it is turned on, but it will open again when disconnected. One drawback is that the ceiling-mounted valve is unsightly and gathers dust.

It is acceptable to move from a round to a square section and vice versa. One requirement is that the duct’s area shouldn’t shrink (it can actually expand). Change the shape of the channel by using the appropriate fittings as explained below.

It’s crucial to select the appropriate ventilation box for your kitchen hood if you want to keep your home air fresh and healthy. With so many options, it’s critical to take installation requirements, size, power, and noise level into account.

First, determine how big your kitchen is and what kind of cooking you do. To effectively remove airborne pollutants, choose a ventilation box with a higher airflow capacity if your kitchen is large or you cook often with smoke and strong odors.

Do not forget to take into account the ventilation box’s power. High cubic feet per minute (CFM) models are ideal for swiftly and effectively eliminating smoke, steam, and smells from your kitchen, leaving the air clean and fresh.

Another crucial thing to think about is noise level, particularly if your kitchen is next to a living or sleeping area. If you want to reduce noise disturbance while your ventilation box is operating, choose one with a low decibel (dB) rating.

It is important to consider the installation requirements as well. Make sure the ventilation box you select is compatible with your current ductwork or ventilation system and can be readily installed in your kitchen layout.

In conclusion, size, power, noise level, and installation requirements are all important considerations when choosing the correct ventilation box for your kitchen hood. It is possible to efficiently remove air pollutants, keep your home clean, and have a comfortable cooking experience if you select a model that suits your needs.

Choosing the right ventilation box for your kitchen hood is crucial for maintaining a healthy and comfortable environment in your home. A good ventilation system helps to remove smoke, grease, and odors from cooking, improving air quality and preventing the buildup of harmful substances. When selecting a ventilation box, consider factors like the size of your kitchen, the type of cooking you do, and the layout of your home. Look for features such as adequate airflow capacity, efficient filtration to trap grease and particles, and low noise levels for a peaceful cooking experience. Additionally, ensure compatibility with your existing kitchen hood and ductwork to simplify installation. By prioritizing these factors, you can choose a ventilation box that meets your specific needs and contributes to a cleaner, healthier home environment.

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