How to choose the right hoods for the bathroom and toilet: types and features in the fan device

Do you need to install a hood fan for the toilet and bathroom? To answer this question, it is necessary to check the quality of work already in the ventilation stage of the exhaust system. If the hole is at the top of the wall, made during the construction works, covered with bars, works properly, then there is no need to install forced ventilation.

Ventilation works properly, when steam stagnation is not formed during washing, and when cleaning agents and powders are used, the odor evaporates quickly. To check the already installed ventilation, you only need to raise a sheet of paper to the lattice. With a properly functioning ventilation system in the house, it will be held by air flow. If that doesn't happen, it's time to think about it, how to choose a hood for the toilet or bathroom. Owners of apartments in high-rise buildings rarely think about ventilation, unlike owners of private homes, where ventilation must be done with your own hands.

Before, how to install an exhaust fan, you need to choose the most suitable, optimal model, which is best for your home. There is now a wide range of ventilation systems on the market.

Varieties of exhaust fans

Before, how to go shopping, you need to know, what are the exhaust devices for the toilet and bathroom:

• roofing;
• axial;
• radiator;
• channel.

axial fans

This design consists of a cylinder-shaped housing, where the wheel is located inside, located on the axis of the electric motor. On the sides of the wheel are cantilever blades, which capture air during rotation. Air masses circulate in the radial direction. To increase the aerodynamic exhaust system, at the entrance to the hood is a collector. Axial hood devices are the most productive. The best place to place them is the wall in the bathroom.

Axial devices are hugely popular because of their ease of installation, because they are mounted directly in the ventilation box.

radial fans

It has a blade wheel design, located in a spiral casing. During rotation, air enters between the blades, going to the wheel, in which it is compressed and ejected by centrifugal force into the casing, then enters the discharge hole. Quiet models are best for the bathroom. At the same time radial fans are rather economic, can easily withstand air loads.

Centrifugal fans with curved blades take up very little space and work with little noise.

channel

Also called centrifugal. Channels have appeared relatively recently. Duct systems are installed in those rooms, where the area is over 20 square meters.

Channel systems are quite powerful, and at the same time have a low noise level. They are installed in the flowing part of the ventilation system and can be rounded, and a rectangular shape. Duct fan is usually installed directly under the ceiling and covered with drywall.

The air ducts of these fans can be:

• flexible;
• semi-rigid;
• Tough.

It is desirable to make your choice in favor of the last two types of air ducts, because they are more reliable and have a longer service life.

suction ventilator

As is clear directly from the title, mounted on the roofs of private homes. In the design of the roofing device is directly a fan, electric motor, autoregulation device, anti-vibration pads.

This system uses a fan:

• radial;
• multidimensional;
• axial.

Technical parameters of exhaust fans

When choosing an exhaust fan for the toilet and bathroom, you must also pay attention to a number of technical parameters and characteristics:

• Productivity. To determine the performance of the ventilation system, it is necessary to consider two characteristics - the number of air changes per hour and area (volume) rooms. Multiply the height and width of the room and multiply the result by the number of air changes per hour. So, you determine the number, which indicates the performance of the ventilation system. Having made a calculation, you can easily pick up an exhaust fan, which is best for your bathroom. You need to choose a device, which has slightly higher performance, than in your calculations.
• Noise level. The operation of each device is accompanied by mechanical or aerodynamic noise. Aerodynamic noise is generated during the operation of all elements of the hood. Mechanical noise enters the room and spreads in the duct. It is necessary to consider, that noise, which exceeds more 40 dB, irritating effect on the psyche. Therefore, before purchasing it is necessary to look at the passport of the equipment, where the noise level must be specified. The main part of the products is made of mufflers.
• Security. Exhaust fans are powered by electricity. The bathroom is constantly high humidity, therefore it is strictly forbidden to mount devices there, which are intended for other purposes. Appropriate markings must always be present on bathroom fans.
• Functionality. Hood fans can be automatic or standard. Standard axes start working when you turn on the lights in the room, in other words, lighting is included - hood is included. This is quite convenient, but not all the time practically. Automatic fans are equipped with an on or off timer. Automatic extractors will cost a little more.
• Cost. Not always, the expensive price guarantees long-term and high-quality work of ventilation system. Choose devices from well-known brands. Be sure to check the product certification.

Components for installation

The extractor fan consists of plastic and metal air ducts, having either a rectangular cross section, or round. The most appropriate, the most optimal installation option is for a suspended ceiling. For small bathrooms in typical city apartments are installed conventional fans, built into the opening of the ventilation shaft. But today with advanced construction technologies, most people choose more complex designs.

To understand the meaning of installing a ventilation system, you need to understand the main elements of the installation of the hood:

• Air ducts. Can be rectangular and rounded. It is desirable to choose the first type of section. Rectangular air ducts are perfectly mounted under the ceiling and do not take up much usable space.
• Fan. It can be built into the air duct or made as an invoice element in the form of decor. Fan, built into the air duct, suitable for complex branched ventilation systems, example, for those cases, if the toilet and bath are separate. The overhead fan is best suited for one room.
• Elements, which provide different mounting options for air ducts. You can choose ready-made brackets for mounting air ducts or make mounts with your own hands.
• Couplings - required for fastening parts of air ducts.
• Swivel knees. Needed for rectangular pipes.
• Check valve. Does not allow air to return from the ventilation shaft or from the street.

All these elements are required for quality installation of the exhaust fan in the toilet or bathroom.

Installation of the exhaust fan

Auxiliary air ducts are not required when installing the fan in the toilet and bathroom. Quite enough standard ventilation shaft, where the exhaust radiator is mounted. This is the best option, when the ventilation is behind the wall of the combined bathroom. If the bathroom and toilet are separate, then you need to put the ventilation grille on both sides of the mine. Exhaust fan is considered to be the easiest device to install and assemble.

To find out the essence of the installation of exhaust ventilation, it is necessary to draw a scheme for work. This includes the central air duct, where by means of tees channels for air intake from other rooms are connected. This scheme is no different from the schemes of installation of any other communication systems.

The next stage of installation is the installation of the fan directly. It is installed in the ventilation shaft. You can also place a fan near the openings on the street or vent. That air from the street or from the centralized ventilation did not get to the fan, it is necessary to solve the inlet valve.

Next is the installation of the duct. For this purpose it is necessary to fasten elements of a pipe and a design by means of sealant. In this case, silicone is perfect. To begin with it is necessary to work with the main channel, where you need to attach all the tees. When the main canal was assembled, you need to go to the side tees, side valves must also be fitted to them. This is necessary for that, so that the air from one room does not pass into another. Air ducts must be routed to the air intakes. If you make a suspended ceiling in the bathroom, then the air intakes can be installed after mounting. That's all! The installation of the exhaust fan can be considered complete.

There are several nuances to consider when installing an exhaust fan:

• Most often, the exhaust fan is mounted during repairs in the toilet or bathroom. This must be done before installing a suspended ceiling. It is also necessary to still check the quality of the ventilation system. Otherwise, problems with the dismantling of the already sewn ceiling can not be avoided.
• The air outlet in the ventilation shaft or directly on the street must be carefully sealed with construction foam. If you do not perform a good seal, then you will not be able to get away from drafts.

Summing up

The bathroom is one of the most humid places in a private house or apartment. Certainly, answer to the question "How to choose an exhaust fan for the toilet and bathroom?"You already know. Let's say it again, that for humid rooms compact are used, but at the same time powerful hood devices in the spray housing, the design of which does not allow moisture to enter the duct, reducing the risk of electric shock to zero. In general, we have considered all the choices of exhaust fans.