Exhaust Fans
Exhaust and ventilation fans for bathrooms, kitchens, workshops and basements, including floor dryers and solar roof fans. Final selection is confirmed at the duty point (airflow / static pressure / voltage / control mode) and by project verification.
| Model | Size | Max airflowm³/h | Max static pressurePa | PowerW | NoisedB(A) | Speedrpm | VoltageV | ||
|---|---|---|---|---|---|---|---|---|---|
 |
LWF-100-01AAC | Ø29 mm | — | see curve | 100 | — | — | 220 | Details |
 |
LWF-1000-02AAC | Ø47 mm | — | see curve | 1,000 | — | — | 220 | Details |
 |
LWF-1000-03AAC | Ø40 mm | — | see curve | 1,000 | — | — | 220 | Details |
 |
LWF-1000-04BAC | Ø47 mm | — | see curve | 1,000 | — | — | 220 | Details |
 |
LWF-1100-01BAC | Ø50 mm | — | see curve | 1,100 | — | — | 220 | Details |
 |
LWF-1300-01BAC | — | — | see curve | 1,000 | 79 | 1,480 | 220 | Details |
 |
LWF-1300-02BAC | — | — | see curve | 1,000 | 79 | 1,480 | 220 | Details |
 |
LWF-300-01AAC | — | 61,200 | see curve | 300 | 62 | 1,280 | 220 | Details |
 |
LWF-300-02AAC | Ø32 mm | — | see curve | 300 | — | — | 220 | Details |
 |
LWF-3200-01BAC | — | — | see curve | 3,200 | 80 | 1,480 | 220 | Details |
 |
LWF-3200-02BAC | Ø43 mm | — | see curve | 3,200 | — | — | 220 | Details |
 |
LWHB-01AC | — | — | see curve | 450 | — | 2,800 | 21 | Details |
 |
LWHB-02AC | — | 216 | see curve | — | — | 15,000 | 21 | Details |
Exhaust Fans — selection guide
The Exhaust Fans category currently lists 13 models, impellers Ø29–50 mm, maximum airflow 216–61,200 m³/h, on AC motors, across 2 series. Common voltages: 220 V, 21 V.
Exhaust fans for bathrooms, kitchens, workshops and warehouses, plus floor dryers and portable blowers: simple, robust axial and centrifugal units for wall, window or roof mounting.
How to select a Exhaust Fan
- Size by room volume and air-change rate; add resistance for louvres and ducts.
- Choose shutter type and IP rating for outdoor or wet locations.
Typical applications
- Bathrooms and kitchens
- Workshops and garages
- Warehouses and basements
Why specify LONGWELL exhaust fans
Every model here is a current production item with structured data — not a catalogue scan. Curves are tested on our own wind-tunnel rigs per AMCA 210 / ISO 5801 methods, drawings and datasheets download directly, CAD is released on request, and a quotation with the duty-point check comes back within one business day. Samples ship in 1–3 days and production batches in 15–30 days from the factory in Ningbo, with ISO 9001 / 14001 / 45001 management systems and ETL, CE and RoHS documentation per product line.
FAQs — Exhaust Fans
How do I size an exhaust fan?
Multiply room volume by the required air changes per hour to get airflow, then choose a model whose curve covers that airflow at the louvre resistance.