Fans – roof, duct, wall and bathroom fans

The fan is the heart of the mechanical ventilation system – a device that forces air flow where the gravitational pull is not enough. In this category you will find more than 200 devices: from bathroom fans for 79 PLN, through canal and wall, to roof, radial, kitchen for food hoods and EX explosion-proof versions. We offer Aventa, Dospel, Vents, S&P, Harmann, Ferono, Tywent, Havaco, Venture Industries and Salda brands including energy-efficient EC and BLDC constructions. Shipping from a wholesale warehouse in Kielce.

Subcategories – go right to the right group

Roofing · Channel · Axle and wall-mounted · Bathroom · Radial · Cellular · Central · Kitchen-ware for eaves · EX-explosive · EX axles · EX channel axles · Drum WBS · Industrial transport WPT · DELTAFAN · WVPKT suppression bases

Which fan for what task?

How to calculate the required performance?

The simplest method for a room is Cubatura multiplied by times the air change per hour. The size is calculated as the length × width × height and the number is taken from the nature of the room:

Example: bathroom 2,5 × 2,0 × 2,5 m has 12,5 m3 quabs. With 6 replacements per hour you need about 75 m3/h, so a typical fin 100 fan – but with a spare, because the catalogue efficiency is given at zero spring, i.e. for a device without a connected channel. The values in the table are indicative and do not replace the design of the installation; in addition, the minimum streams from the PN-83/B-03430 are used in the dwellings.

Performance alone is not enough – look at the spring

That's the most common purchase mistake. The fan reaches the catalog m3/h only when nothing resists it. The connected channel, knees, filter, damper and grate form the flow resistance expressed in strips, and with its increase the efficiency falls – this dependence describes the characteristics of the fan's work. Therefore, with a short throw straight through the wall, an axial fan is enough, while with several meters of canals with fittings you have to reach for a radial version or model with a significantly higher spring. If the manufacturer gives a performance/pressure graph, select the device at a point corresponding to the resistance of your installation, not after the highest number of descriptions.

AC or EC/BLDC engine?

The EC and BLDC engines take on significantly less energy and work quietly, especially at lower speeds, and the speed is adjusted by the control signal instead of choking the voltage. In continuous work – ventilation of the house, service premises, installation working around the clock – higher purchase price is paid in bills. The classic AC engine remains a sensible choice where the device works briefly and occasionally. Note for steering: the EC fan is not regulated by ordinary tyristor regulator – a 0–10 V signal driver is needed.

Installation and operation – 6 rules

• Keep the air flowing. The exhaust fan in a sealed apartment has no place to get air – window or wall vents are necessary.
• Do not mount your knee directly on the shortcut. A disturbed inlet stream can reduce productivity by several percent.
• Cut the vibrations. The flexible connector with the fan and the rubber insert are the difference between quiet and audible installation throughout the building.
• Use return flap where the fan works periodically – without it, the air returns via a canal when the device is turned off.
• Check the working conditions. The air temperature, humidity, the presence of fat or dust and the degree of IP protection shall correspond to the manufacturer's declaration.
• Clean the rotor at least once a year. The base on the blades reduces performance and considers the rotor, which reduces bearing life.

Complete Installation

You'll get the rest of the system to the fan: ventilation ducts, silencers, return flaps, grates and anemostats, turnover regulators, grips and handles and chimneys.