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Need a quote for Gas Blowers? 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 Gas Blowers 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 Gas Blowers

Gas Blowers

Achieving the right gas/air mixing ratio is crucial for optimal combustion and low NOx emissions, especially in condensing units. Longwell’s centrifugal blowers, featuring advanced EC technology, deliver excellent control characteristics, smooth operation, and high efficiency, making them ideal for this purpose. Integrated System Solutions To meet this need, Longwell offers centrifugal blowers with integrated gas valves, venturis, and boiler control units as complete systems for both pneumatic and electronic combustion control. Our systems are supplied as fully tested, harmonized units with optimized interfaces, minimizing your setup efforts. Future-Proof and Efficient Solutions Regardless of the specific requirements, our solutions are designed to be future-proof, systematically enhancing efficiency.
Longwell Gas Blowers are specialized units engineered to move air and flue gases in combustion, HVAC, and industrial processes. They provide consistent airflow under high temperatures and harsh operating conditions.
Constructed from heat-resistant materials and high-strength impellers, Longwell gas blowers ensure durable, safe, and energy-efficient performance. They are suitable for boilers, furnaces, and chemical process ventilation.