Mixed-Flow Inline Fan Boost I 250 T

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Dimensions and technical details

220-240 V ~ 50 Hz
Housing colour: silver
Housing material: galvanised steel
30mm acoustic material layer for sound and heat insulation
Nominal size: 250 mm
Bearings: ball bearing
Speed levels: 3
Wattage: 144 / 173 / 188 W
Current consumption: 0.7 / 0.81 / 0.84 A
Revolutions per minute: 2292 / 2626 / 2876
Airflow rate: 1007 / 1404 / 1670 m³/h
Airflow rate: 280 / 390 / 464 l/s
Sound pressure Lp-3m: 38 / 43 / 45 dB(A)
Diameter: 337 mm
Diameter with terminal box: 389 mm
Length: 739 mm
Diameter duct connection : 249 mm
Weight: 9.8 kg
Max. temperature of transported air: -25 to +55°C
IP rating: IPX4
IP rating motor: IP20
Adjustable shut-off timer (2-30 min): fan turns off after expiration of the pre-set time
Mounting options: any position
Application: ventilation systems requiring high pressure and low noise level
Ideal for air extraction in damp rooms of residential and commercial properties

Boost-I 250 T – Sound-insulated semi-radial inline duct fan with run-on timer 250 mm

Quiet power for demanding ventilation tasks: the Boost-I 250 T pairs high pressure with low noise to support both supply and extract duties in modern systems. Its galvanised-steel casing is wrapped in a continuous 30 mm acoustic lining that subdues motor and airflow noise before it reaches the ductwork. A semi-radial impeller maintains stable flow against resistance, while precision ball bearings deliver long-life reliability. Rated IPX4 and designed for −25 to +55 °C, this sound-insulated inline duct fan 250 mm performs consistently in humidity-prone, noise-sensitive environments. The 249 mm spigot integrates directly with standard round ducting, and all-position installation speeds up retrofits without compromising airflow paths.

On duty, the Boost-I 250 T moves up to 1670 m³/h at a maximum 2876 rpm, keeping air changes high even on longer runs, with sound pressure limited to a modest 45 dB(A) at 3 m. That blend of pressure and discretion makes it a natural fit wherever a quiet high-pressure extract fan is needed around filters, dampers or heat-recovery components. Practicality extends to control: the adjustable run-on timer (2–30 min) purges residual humidity and odours after occupancy, then shuts the unit down automatically to save energy. From changing areas and shower blocks to wellness suites, commercial kitchens, technical rooms and back-of-house spaces, this semi-radial duct fan for supply and extract duties delivers dependable performance with a refined acoustic signature. The result is healthier indoor air, fewer disturbances from the plant, and a robust, low-maintenance upgrade that keeps projects on specification – quiet, pressure-strong and installation-friendly.

Zone	Country	Shipping	Free shipping on ordes over
UK	United Kingdom	free	free
European Union	Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, France, Finland, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Poland, Portugal, Romania, Sweden, Slovakia, Slovenia, Spain	free	free
Non-EU	Albania, Belarus, Bosnia and Herzegovina, Canary Islands, Gibraltar, Guernsey, Iceland, Jersey, Liechtenstein, Macedonia, Moldavia, Montenegro, Norway, Serbia, Switzerland, Ukraine	free	free
Australia	Australia	£ 99.00	not applicable
South Africa	South Africa	£ 109.00	not applicable
W4	Egypt, Israel, Morocco, Russia, Turkey	£ 45.00	not applicable
W5 and W5.1	Bahrain, Canada, China, India, Japan, Kazakhstan, Kuwait, Maledives, Mexico, Mongolia, Philippines, Qatar, Republic of Korea, Saudi Arabia, Singapore, Sri Lanka, Thailand, United Arab Emirates, USA, Vietnam	£ 110.00	not applicable
W6	Argentinia, Barbados, Benin, Botswana, Brasil, Burkina Faso, Caiman Islands, Cameroon, Chile, French-Guayana, French-Polynesien, Ghana, Guadeloupe, Hongkong, Ivory Coast, Macau, Mali, Martinique, Mauritius, New Caledonia, New Zealand, Nigeria, Réunion, Saint Barthelemy, Sao Tomé und Príncipe, Seychelles, Vanuatu	£ 165.00	not applicable

Fans: Multi-purpose devices

Patio, garden, bathroom and commercial use

Small to large rooms and halls

Improving Air Quality

Sanitary & washroom equipment

Protection from Insects

Light bulbs

Dimensions and technical details

Boost-I 250 T – Sound-insulated semi-radial inline duct fan with run-on timer 250 mm

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