- ImpellerØ250 mm9.8 in
- Max airflow2,500 m³/h1,471 CFM
- Max static pressure380 Pa1.53 in. wg
- Noise70 dB(A)
LWFA-E-250-01 LWFA Series Direct Drive Centrifugal Blower Ø250 mm
Ø250 mm | AC | Max airflow 2,500 m³/h | Max static pressure 380 Pa | 70 dB(A)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · RoHS · ETL on request
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Performance curve (P-Q) LWFA-E-250-01
Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (1 here, rated V). Data version: catalogue curve re-digitised 2026-09-20 (axis-calibrated, cross-checked). The system resistance curve depends on the actual ductwork — confirm the operating point on site. Need an engineer to verify the duty point? Contact us or add the model to your RFQ and note the duty point.
Drawing, Curve & Wiring LWFA-E-250-01
Files for LWFA-E-250-01: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWFA-E-250-01
LWFA-E-250-01 is a LONGWELL LWFA Series Direct Drive Centrifugal Blower from the Impeller Ø178–254 mm range, impeller Ø250 mm, maximum airflow 2,500 m³/h, maximum static pressure 380 Pa, noise 70 dB(A). The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWFA-E-250-01 |
|---|---|
| Motor type | AC |
| Max. airflow | 2,500 m³/h |
| Max. static pressure | 380 Pa |
| Noise | 70 dB(A) |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 0 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø250 mm |
| Blade diameter | 250mm |
| Impeller material | Galvanized sheet ( Impeller ) |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 30,000Hours(L10), At 40 °Croom, humidity 15%~65%RH |
Typical applications
- Commercial kitchen extraction
- Ventilation units and AHUs
- Process and fume extraction
Nameplate values: maximum airflow is measured at zero static pressure and maximum static pressure at zero airflow; the two never occur together. Confirm the operating point on the performance curve. Final selection is subject to the duty point (airflow / static pressure / voltage / control mode) and project verification.
Company certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO 9001 / 14001 / 45001 management-system certificate. Click a scan to open the original.
ISO 9001 / 14001 / 45001Management systems of Ningbo Longwell Electric Technology Co., Ltd. (company certificate).
PDFISO 9001 / 14001 / 45001 management system certificateNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWFA-E-250-01
Most first orders follow the same eight steps. Quantities, terms and lead times are confirmed in your quotation.
- 1SelectFind models by duty point in the selector or by model number, compare on the curve and add them to your RFQ list.
- 2Engineering checkWithin 1 business day you receive the duty-point check on the curve, price and lead time.
- 3SamplesStock models ship in 1–3 days.
- 4Validation supportDatasheets, drawings, wiring diagrams and DoC per model; test reports, CAD and register maps after a short project check or NDA.
- 5Order & paymentProforma invoice; first orders on T/T 30 / 70.
- 6Production & release15–30 days at the partner factory that builds your model, then inspected and released to LONGWELL standards with outgoing sampling to AQL 2.5.
- 7ShippingFOB / CIF / DDP by sea from Ningbo or Shanghai; express and air on EXW / FCA / DAP.
- 8After-sales12 months standard, extendable to 18–24 months by project agreement; test records retained for 5 years; 8D closed-loop for any issue; annual technical review for framework customers.
Test & release at LONGWELL
Specified and drawn by LONGWELL; built to LONGWELL drawings by qualified partner factories; inspected and released to LONGWELL standards before shipment.
See test and release photos (8)
Alternatives with the same impeller (Ø250 mm · AC)
Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.
| Model | Max airflow | Max static pressure | Speed | Power | Noise | Voltage | |
|---|---|---|---|---|---|---|---|
| LWFA-E-250-01 this model | 2,500 m³/h | 380 Pa | — | — | 70 dB(A) | — | |
| LWFA-E-250-02 | 2,100 m³/h | 215 Pa | — | — | 64 dB(A) | — | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWDD10-10-ECØ254 mm · 4,102 m³/h · 608 Pa · ECadjacent size
LWDD10-8-ECØ254 mm · 3,458 m³/h · 528 Pa · ECadjacent size
LWDD9-9-ECØ229 mm · 4,146 m³/h · 587 Pa · ECadjacent size
LWDD9-7-ECØ229 mm · 2,410 m³/h · 486 Pa · ECadjacent size
LWFA-E-225-01Ø225 mm · 2,300 m³/h · 325 Pa · ACadjacent size
LWFA-E-280-02Ø280 mm · 2,100 m³/h · 220 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWCA-150700SN-06Ø150 mm · 2,500 m³/h · 85 Pa · ACsimilar duty
LWCD-150700MN-06Ø150 mm · 2,500 m³/h · 83 Pa · DCsimilar duty
LWDA-400 (16")U-MWN-03Ø400 mm · 2,500 m³/h · ACsimilar duty
LWDA-400 (16")U-MWN-01Ø400 mm · 2,500 m³/h · ACsimilar duty
LWDA-315(12.6'')S-PWN-05Ø315 mm · 2,500 m³/h · 450 Pa · ACsimilar duty
LW-G200T2,500 m³/hsimilar dutySee all Commercial Centrifugal Blowers · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for commercial centrifugal blowers — on our main site.
Solutions
- Commercial HVACAHU, rooftop, fan coil, air curtain
- Home appliance coolingHoods, ovens, dryers, air conditioners