🔥 Get Full Catalog
Need a quote for DC Forward Fans? Send airflow, static pressure, voltage and quantity — an engineer replies within 1 business day.Send specs to an engineer →
Have your duty point?

See every LONGWELL model whose P-Q curve covers it — margins, noise and power included. No login.

Library: Ø25–1,000 mm, single units up to about 52,000 m³/h — larger duties go straight to an engineer. Prefer to talk it through? Send your specs to an engineer Browse all DC Forward Fans models with curves on the Fan Selector →

Buying from LONGWELL

  • Brand owner since 1990
  • Yuyao, Ningbo
  • 12-month standard warranty, extendable to 18–24 months by project agreement
  • Reply within 1 business day

Certificates you can check

Product certificates cover only the models listed on each document — ask which ones apply to your model. ISO certificates cover management systems, not products. Declaration of Conformity for your model and destination on request.

All document scans and what each covers

Test & release at LONGWELL

Specified and drawn by LONGWELL, built to our drawings by qualified partner factories, inspected and released to LONGWELL standards.

  • Wind tunnel · AMCA 210 method
  • Semi-anechoic room · sound power testing
  • Outgoing sampling to AQL 2.5
  • Test records retained for 5 years

How ordering works

  1. Spec check duty point & drawings
  2. Samples 1–3 days (stock models), fee credited to first order
  3. Validation on your bench
  4. Order T/T 30/70 (first order)
  5. Production & release 15–30 days, partner factory
  6. Shipping & after-sales FOB · CIF · DDP
Full terms, QC and FAQ
Current book for DC Forward Fans

DC Forward Fans

DC forward fans put a forward-curved wheel on a brushless DC motor for battery, vehicle and portable air handling where the supply is already 12 or 24 volt. A PWM signal trims the volume to demand, and the low draw suits intermittent or off-grid duty. They keep the forward curve’s compactness with DC’s control and efficiency.