The Heart of a Reliable Exhaust Fan: High‑Static Pressure AC/DC/EC Centrifugal Fans
Overcome duct resistance, grease, and humidity. Our centrifugal fans deliver stable airflow even with long exhaust runs, backdraft dampers, and fine filters. Built for bathroom, kitchen, and industrial exhaust – 50,000h continuous operation.
Our Industrial Ventilator Fans
We make yours indestructible.
Your customers demand an exhaust fan that lasts for years – no noise rise, no airflow drop. The difference is inside: a high-static pressure centrifugal fan that fights backpressure from ducts, louvers, and grease build-up. We supply AC/DC/EC motors that turn your housing into a performance legend.
- Ducted systems: Maintain 80% airflow even at 150Pa backpressure
- Wet & oily environments: IP44/IP54/IP56 impellers & sealed lead
- Long life: 50,000h ball bearing, thermal overload protected
View Our Industrial & Electric AC Fans
Our AC axial and radial fans combine advanced engineering, durability, and efficiency to support diverse industrial cooling requirements.
133-355 mm
Size Range
115-240 V
Voltage
159-1735 CFM
Air Volume
60,000 hour
Service Life
Fan
Model
Size
(mm)
Voltage
(VAC)
Power
(W)
Speed
(RPM)
Airflow
(CFM)
80-280mm
Size Range
110 V / 220 V
Voltage
–30°C ~ 80°C
Operation Temperature
50,000 hour
Service Life
Fan
Model
Size
(mm)
Voltage
(VAC)
Power
(W)
Speed
(RPM)
Airflow
(CFM)
Why exhaust fan manufacturers choose centrifugal (not axial)
Problem: Airflow collapse in long ducts
Axial fan airflow can drop 60% with 3 meters of flex duct + 2 elbows.
Our solution: Centrifugal fan maintains ≥85% rated airflow at 100Pa.
Problem: Grease & moisture kill motors
Standard motors fail within 1 year in kitchen exhaust or bathroom ceiling.
Our solution: Sealed housing, coated PCB, IP54-rated centrifugal fan with drainage holes.
Problem: Overheating during continuous use
Industrial exhaust fans run 24/7 – cheap fans suffer winding failure.
Our solution: Class F insulation (155°C) and auto-reset thermal protector.
Match the motor technology to your exhaust fan application
From cost‑sensitive continuous fans to smart IoT range hoods – we have all three.
Our Industrial Ventilator Fans
- How to choose static pressure (Pa)
Simple rule: Required Pa = (duct length in meters × 6) + (elbows × 12) + (louver/damper × 20). Example: 4m duct + 2 elbows + backdraft damper = 4×6 + 2×12 + 20 = 68Pa minimum.
Our fans provide 100–500Pa, with P-Q curve available for each model. We help you avoid under‑sizing.
- IP rating for exhaust fans
- IP44 – Splash proof (standard bathroom/kitchen)
- IP54 – Dust protected & water jets (unducted wall exhaust)
- IP56 – Powerful jets & marine humidity (outdoor/industrial)
- All our centrifugal fan motors can be upgraded to IP54/IP56 with sealed lead wires and encapsulated electronics.
Every fan validated: factory testing for 24/7 ventilator duty
We don’t guess. We test. Each batch and critical parameters are verified to eliminate field failures.
Dielectric strength (HIPOT)
1500VAC / 1sec 100% tested – no electrical leakage, safe for humid environments.
Airflow & pressure check
Sample from each batch verified on wind tunnel; CFM and Pa within ±5% of spec.
Exhaust fan OEM services – from prototype to bulk
Custom mechanical integration
We adjust inlet diameter, outlet flange, mounting bracket, and impeller material (aluminium/plastic/steel) to fit your existing housing.
Electrical & connector options
Pre-wired leads, custom terminal blocks, waterproof connectors, and even tacho output for speed monitoring.
Logistics & warranty
18-month warranty, fast sample (5-7 days), advanced replacement for quality issues, and safety stock for long‑term contracts.
FAQ of Ventilator Fans
Why is static pressure so critical for exhaust fans?
Static pressure (measured in Pa) is the “pushing power” of a fan. In exhaust systems, airflow faces resistance from long ducts, elbows, backdraft dampers, and grease filters. While standard axial fans lose up to 60% of their airflow under these conditions, our centrifugal fans are engineered to maintain over 85% of rated airflow, ensuring the room is actually ventilated rather than just spinning air.
How do I calculate the minimum static pressure (Pa) required for my exhaust fan design?
A reliable engineering rule of thumb is:
For example, a 4m duct with 2 elbows and a damper needs at least 68Pa. Our fans typically provide 100Pa to 500Pa, giving you a significant safety margin for reliable performance.
What makes your fans "Grease & Moisture Resistant" for kitchens and bathrooms?
We use a three-tier protection strategy:
IP Rating: Motors are available with IP54 or IP56 ratings, featuring sealed lead wires and encapsulated electronics.
Materials: We offer stainless steel shafts and Class H (180°C) insulation for high-heat kitchen environments.
Design: Our centrifugal impellers include drainage holes and coated PCBs to prevent failure from condensation or oily build-up.
Can LINKWELL fans help my product meet international energy codes?
Our EC (Electronically Commutated) fans are specifically designed for energy compliance (like ERP in the EU or DOE in the USA). They offer:
Up to 75% energy savings compared to AC motors.
0-10V/PWM speed control for smart, demand-controlled ventilation.
Ultra-low standby power (as low as 2W).
What kind of testing do you perform to ensure "Zero Field Failure"?
Every batch undergoes rigorous verification:
Dielectric Strength (HIPOT): 1500VAC testing to ensure safety in humid zones.
Locked Rotor Test: Simulating a blockage for 48 hours to ensure the thermal protector prevents fire risks.
Performance Curve Audit: Sample testing in our wind tunnel to ensure CFM and Pa are within ±5% of specifications.
