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ebm-papst D3G250 Alternative — LONGWELL LWFE3G250

Looking for an alternative for ebm-papst D3G250-FR07-23? The LONGWELL LWFE3G250 is the same-size alternative — same control protocol, mounting dimensions on the LONGWELL drawing, performance characterized using AMCA 210/211 test methods (test report on request) — at 40–55% lower landed cost with 15–30 day delivery vs 14–22 weeks ex-works ebm-papst. Widely deployed across Small AHU, commercial dryer, compact ERV / smart home ventilation.

Replaces: ebm-papst D3G250-FR07-23 Diameter: Ø250 mm Family: D-series double-inlet → LONGWELL LWBE3G / LWAE3G / LWHV / LWFC Sample: 1–3 days
Replacing
ebm-papst
D3G250
D-series double-inlet · EC double-inlet forward-curved blower · Ø250 mm
→
With
LONGWELL
LWFE3G250
Same size class (Ø250 mm) — mounting per drawing · Same control · 15–30 day delivery

Specification Comparison

Specification ebm-papst D3G250 LONGWELL LWFE3G250
Fan type EC double-inlet forward-curved blower EC double-inlet forward-curved blower
Impeller diameter Ø250 mm Ø250 mm 2 models
Airflow range 400–2,400 m³/h up to 4,058 m³/h
Static pressure (max) 600 Pa up to 742 Pa
Motor power (max) 420 W up to 750 W
Noise floor (Lw) 62 dB(A) from 74 dB(A) (nameplate, per model)
Voltage 200–240 V 1Φ 220–230 V 1Φ · 380–400 V 3Φ
Control input 0–10 V / PWM / Modbus / EC-Control 0–10 V / PWM / Modbus RTU (RS485)
IP rating IP54 / IP55 IP54 std · IP55 / IP67 option
Certifications CE · UL · VDE · EAC CE · ETL (UL 507 / CSA C22.2 No.113) · RoHS · REACH
Sample lead time 4–10 weeks 1–3 days
Series lead time (≤500 units) 14–22 weeks 15–30 days
Landed cost index (LONGWELL = 100) 175–200 100 (baseline)
Verify it on the LONGWELL selector: all 2 LWFE3G250 models — data, measured curves, drawings · LWFE3G250-138DS-02 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

Why Engineers Switch from D3G250 to LWFE3G250

4–8× Faster Delivery

15–30 days
vs 14–22 weeks ex-works for ebm-papst in 2026. Sample units 1–3 days from stock vs 4–10 weeks.

40–55% Lower Landed Cost

−€600 to −€2,400
per unit at equivalent spec, depending on size and quantity. On a 50-unit FanGrid retrofit, typical CapEx delta is €30k–€120k.

Drop-in Candidate · Same Size Class

Ø250 mm
Same impeller size and control protocol; confirm the mounting hole pattern and inlet ring against the LONGWELL drawing before ordering.

Drop-in compatibility: what matches and what to confirm

Mechanical match

The LONGWELL LWFE3G250 matches the ebm-papst D3G250 mounting pattern (M-mount, ISO 9001 plenum-fan footprint) per the mounting dimensions on the LONGWELL drawing. Inlet ring diameter, motor shaft height, and electrical termination box position are identical. In most retrofits no plate modification is needed — confirm the mounting dimensions against the LONGWELL drawing before ordering.

Electrical & control match

The LWFE3G250 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as ebm-papst D3G250. LONGWELL provides the Modbus register map and a cross-reference to the ebm-papst map for BMS integration.For ebm-papst-specific bus protocols (EC-Control), ask LONGWELL engineering for the integration options.

Performance match

The measured P-Q curve of every LONGWELL model is on its model page; we check your duty point against it before quoting.

Typical Applications

The LWFE3G250 is widely deployed across Small AHU, commercial dryer, compact ERV / smart home ventilation. Common application categories include:

  • Small AHU
  • Commercial dryer
  • Compact ERV

Particularly suited for commercial dryer OEM and smart-home ERV at scale.

FAQ

Is LONGWELL LWFE3G250 a true drop-in replacement for ebm-papst D3G250?
Same size class and control interface. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWFE3G250 model page before ordering; it accepts the same 0–10 V analog / PWM / Modbus RTU control signals and is offered in the voltages listed in the table above.
How does LWFE3G250 compare on efficiency to D3G250?
LONGWELL does not publish a single peak-efficiency figure for the LWFE3G250. The model page on the selection site gives airflow, static pressure and input power along the curve (measured where marked, nameplate-estimated otherwise), so the efficiency at your duty point follows directly; a test report for a specific model is available from engineering on request.
What's the 2026 lead time difference?
As of May 2026: ebm-papst D3G250 requires 14–22 weeks ex-works due to ongoing allocation. LONGWELL LWFE3G250 ships in 15–30 days for orders up to 500 units and 6–10 weeks for 1,000+ unit OEM programs. Sample units ship in 1–3 days from stocked Ø250 mm inventory.
What's the cost delta?
At equivalent specification (same Ø, same airflow/Pa, same IP, same control), LONGWELL LWFE3G250 typically lands at 40–55% below ebm-papst D3G250 ex-works pricing. Final pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWFE3G250 typically used for?
LWFE3G250 is widely deployed across Small AHU, commercial dryer, compact ERV / smart home ventilation. Particularly suited for commercial dryer OEM and smart-home ERV at scale.

Replace your D3G250 — samples in 1–3 days

Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15–30 day lead time after PO.

Request Sample View Full Cross-Reference Table
Official Product Page
Browse the full Forward-Curved Centrifugal EC Fans range on longwellfans.com — request a quote on LWFE3G250 directly.
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ebm-papst® is a registered trademark of ebm-papst Group. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by ebm-papst. Any references to third-party trademarks are used solely for identification and comparison purposes. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.