Before installing a window fan, it is necessary to evaluate its technical parameters and capabilities, as well as the size of the room where the installation is supposed to be. Modern systems have a reduced noise level (25–30 dBA) and will not cause discomfort in this regard. Spending a small amount of electricity, they at the same time provide significant air exchange that meets sanitary standards.
For a simple device and a reliable design of window fans, an expensive service is not required — it is enough to periodically clean its parts from dust.
Installing a window fan is a simple process and does not take much time. The device has a small weight and size, which allows you to install it directly in the window, cutting a hole in the glass of the appropriate size. In order to ensure a snug fit of parts and assemblies at the installation sites, special components and fasteners are provided to ensure complete tightness. To eliminate noise, noise-insulating gaskets are used, which are also advisable to use during installation.
How to choose
In order to make the right decision, particular attention should be paid to the power, performance and dimensions — these parameters are of particular importance during installation and further operation. The most popular option is the axial window fan, which is characterized by simple design, high efficiency, and good aerodynamic characteristics.
When choosing, the volume (m3) and the purpose of the room are taken into account. So, for a bedroom, an air exchange rate (the number of air changes per hour) is 2–4, for a living room — 3–6, for a toilet — 6–10, for a kitchen — 10–15. Based on the required air exchange rate, you can calculate the required system performance by multiplying the indicated parameters. So, for a kitchen of 10 m², a device with a capacity of at least 100 m³ / hour will be required.
An analogue of window fans is a window fan, which is installed in the windows, performing the same functions. In accordance with the size and shape of the window, you can choose exactly the device that is most suitable in a particular case. A separate, high-tech model of this type is the fore-mounted supply and exhaust fan, which provides ideal possibilities for cleaning and fresh air supply. To protect against the ingress of air from the outside in the “off” position, it is recommended to purchase an inexpensive ventilator with a cover.
The size of the device should correspond to the size of the window or vent, without taking up too much space and without interfering with the penetration of sunlight. It is also important that the shape and design of the device fit into the overall interior.
To ensure the removal (inflow) of air in large volumes, in some cases, window three-phase fans can be used. Such fans have increased performance characteristics and are used as auxiliary in the general ventilation system of industrial buildings and structures.
Depending on the direction of movement of the air medium, window fans are divided into:
- supply and exhaust.
Exhaust fans, provide an extract of especially polluted air. This category includes kitchens, bathrooms, toilets, small laboratories and workshops.
A window supply fan will help to solve the issues of fresh air supply to the office, to living rooms where there is no need to pre-extract polluted air, and a slightly increased pressure of fresh supply air will help to freshen the air in the room.
The supply and exhaust system is particularly effective, providing both the removal of polluted air and the supply of fresh air. A window reversible supply and exhaust fan can perform these functions. Depending on the need for cleaning or fresh air supply, devices of this type can perform both specified modes of operation. To do this, the device is equipped with a reversible electric motor powered by a 220 V network.
Some models of this type are equipped with transformers that reduce the mains voltage to 12V and ensure complete safety for users. Each modern window reversible fan is equipped with a position switch that allows you to manually switch speeds, operating modes (supply-exhaust), as well as turn the device on or off. If desired, you can order a device with a remote control.
The innovative DC reversible DC motor has speeds up to 3000 rpm and low power consumption. The DS motor is designed for 12V voltage, operates in a two-speed mode and has a reduced noise level due to special design solutions. A particularly attractive feature is its reliability: the motor is protected against overheating, is designed for continuous operation and does not require maintenance.
Window fans are fully adapted to work in conditions of temperature difference: changing weather conditions, especially in winter, do not affect their efficiency. A modern household exhaust window fan has a housing and most of the components made of heat-resistant, shock-resistant, thermoplastic ABS plastic, which equally well perceives both high (up to +40 ° C) and low (up to 30–40 ° C) temperatures outside the window, is resistant to exposure to ultraviolet rays.
The window louvered fan, which extracts the exhaust air, is equipped with special devices — shutters, which automatically close smoothly when the device is turned off, thus preventing back draft (air from outside). A simpler device is a window fan with a cover, in which a cover is provided to prevent the flow of air from the street, which can be closed manually if necessary.
Ease of maintenance, efficient operation, innovative technical features and performance make window fans increasingly popular.