High humidity, accumulation of condensation in the bathroom, disturbed ventilation in the bathroom is a situation familiar to many. If you see such a picture, then it's time to start fighting the problem, abandon the old methods of solving.
Why ventilation is needed
As a rule, there are no windows in the bathroom, and properly equipped ventilation is the only way for air to enter. Today, the construction of any house is not complete without the development of an effective ventilation system (forced or natural type), which takes into account not only the direction, but also the location of air flows.
Often, a simple ventilation system does not completely eliminate excess air humidity. The easiest way to check how well the ventilation in the bathroom is functioning is to place a piece of paper over the hole (grate). If the paper falls, it means that the ventilation is weak.
At the same time, do not forget that even a working system of natural ventilation is not always able to cope with the tasks assigned to it, since the principle of the device is based on the difference in the temperature range of the air in the room and outside.
Therefore, in the summer, natural ventilation in the bathroom practically does not work. It is also necessary to understand that after some time, the ventilation shafts become clogged, accumulate dust.
If you notice that mold, small insects, or an unpleasant smell have appeared on the walls, then this means that the natural ventilation is defective. One of the most effective solutions will be the installation of an exhaust fan for the bathroom.
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Additional functions of the exhaust fans
Today, many manufacturers, ranging from well-known to small offices, offer a wide range of these "necessary" devices. They differ among themselves not only in price, design, quality of materials, but also in technical characteristics.
The most popular among consumers is the bathroom fan with a timer, because the round-the-clock operation of this electrical appliance is not at all desirable and not necessary.
The timer provides the ability to ventilate the bathroom space for a specified time, for example, 15 - 20 minutes.
Models that are equipped with humidity sensors operate on indoor air readings. They work only in high humidity, regardless of the time of year and day.
If you live in a multi-storey building, experts recommend giving preference to models with a check valve. Thus, the penetration of foreign odors into the apartment can be prevented.
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Variety of models of exhaust fans
In order to choose which fan to buy, you need to study all types of modern models, manufacturers, designs.
Structurally, modern models of the arrangement of forced ventilation are divided into axial, radial, centrifugal and roof.
Axial exhaust fans
The design of axial fans consists of a wheel with blades in a casing. Often the impeller is mounted on the axis of an electric motor, which ensures the movement of air masses only in the axial direction.
The main advantages of axial fans are high aerodynamic performance characteristics. Such models have high performance indicators compared to other types of fans.
The effective performance of the axial fan is more than 100 meters per hour, but the indicators of the pressure characteristics leave much to be desired. Installation of equipment must be carried out directly inside the wall. Among the many advantages of the model, the disadvantage is the high noise figure, reaching 50 dB.
The axial fan for the bathroom has gained wide popularity due to its ease of installation.
Radial exhaust fans
Structurally, radial fans are impellers housed in a spiral casing.
Among the many advantages of radial fans, the most relevant are:
- the presence of side surfaces of the blades on the hollow cylinder;
- uniform parallel arrangement of the axis of rotation;
- minimum noise indicators;
- the presence of one-, two-sided suction.
In order to choose the right radial fan in the bathroom, it is necessary to disassemble the design features. When using ventilation systems with backward curved blades, the consumption of electrical energy can be reduced by up to 20%.
Such ventilation systems have smaller impeller dimensions, rotation and noise indicators.
Centrifugal exhaust fans
This type of ventilation equipment is the most "young", was developed in the second half of the twentieth century. The main advantages that ensured the popularity of the system are:
- ensuring correct operation in large areas (more than 15 squares);
- ease of installation;
- low noise level;
- high power exchange of air flows;
- lifetime.
To ensure maximum system life, experts recommend choosing a semi-rigid or rigid duct. Often, a duct fan for an exhaust hood in a bathroom is installed under the ceiling and hides behind a plasterboard box. Centrifugal ventilation equipment can be either rectangular or circular. The centrifugal fan can be mounted in front of the air intake or inside.
Roof exhaust fans
Structurally, a roof fan for a bathroom is a specialized system, which includes vibration damping pads, an electric motor, a fan, and automatic control equipment. The equipment is installed directly on the roofs.
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Main selection criteria
In order to choose the right ventilation system for the bathroom, it is necessary to study the parameters (performance, noise, work safety, resistance to moisture), functionality, cost.
- Performance... This indicator depends on the quadrature of the space and the frequency of air exchange in 1 hour.
- Noise... An exhaust fan for the bathroom is operated with a forced system using an electric motor. His job just the same can adversely affect the nervous system if the noise levels are greater than 35 dB. Therefore, before purchasing a ventilation system, experts recommend studying the noise level in the technical specifications.
- Safety... When choosing a fan for a bath, do not forget about safety, equipment protection from moisture.Due to the fact that the bath is the wettest room, the risk of a short circuit increases significantly.
- Functional features... Today, all types of ventilation systems are divided into stationary (axial system with a check valve) and automatic.
- Rationality... In order to choose a good fan, you need to pay attention not only to the cost of the equipment, but also to the merits, relevant documents (certificates), guarantees, standards, in accordance with which the equipment was made.
When choosing an automatic ventilation system, you should pay attention to the possibility of setting a timer, the presence of humidity sensors or other methods of operating control.
A wide range of bath fans provides the ability to completely get rid of mold, unpleasant odors, insects.
The bathroom is the wettest room in the house. Therefore, having listened to the advice of professionals, you can easily choose the type of fan you need, which meets all the parameters and tasks.
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