LONGWELL · Industry applications
Find the right airflow solution for your equipment.
Start with what your equipment needs to do. Explore fan and blower options for HVAC, cleanrooms, refrigeration, electronics and OEM equipment—then build a selection around your operating point.
Choose by application
What equipment are you developing?
Use these application routes to identify a suitable fan arrangement and the information needed for an engineering review. Product images illustrate available fan families; they do not identify a completed customer installation.
Building HVAC & air handling
Compare the fan at your coil and filter resistance, with room for installation and service.
Cleanroom & filtered air
Start with filter resistance, target air delivery and the available housing depth. Review the motor and impeller as an assembly.
Data centers & precision cooling
Review fan-array layout, access and control behavior across the required operating range.
Refrigeration & cold chain
Match the air path and fan arrangement to the heat exchanger, ambient conditions and moisture exposure.
Heat pumps & heating terminals
Review coil airflow and outdoor noise for heat pumps, or a compact air path for indoor heating terminals.
Appliances & air curtains
Review cross-flow fans for a long, narrow outlet and centrifugal fans where the equipment needs more pressure.
Equipment & electronics cooling
Build the selection around the heat load, enclosure airflow path and the actual resistance of grilles or filters.
Fresh air & agricultural ventilation
Choose the air-moving arrangement around duct resistance, air distribution and the operating environment.
Exploring a narrow outlet? Browse the cross-flow fan catalog (PDF).
From application to selection
Go deeper before choosing a model.
These guides connect the equipment requirement with installation checks, controls and the documents to request.
FFU & filtered-air selection
Review the housing, filter condition and motor–impeller arrangement before comparing fan options.
Read the FFU guide →AHU & ventilation unit fans
Work through the duty point, installation drawing and controls needed for a fan review.
Read the AHU engineering guide →Replacing an existing fan?
Check dimensions, duty, electrical supply and control behavior before calling a replacement compatible.
Use the 9-point replacement checklist →Catalogs describe product families. Request the current drawing, performance data and compliance documents for the exact selected model.
See the engineering work
Move from a catalog curve to your system.
A fan specification is a starting point. The inlet, outlet, coil, filter and control settings affect the installed result. Agree on the operating conditions and acceptance checks before sample testing.
Browse product catalogsExplore the existing industry library
All industry entry points
Continue into a sector overview, a cooling solution or a retrofit route.
Buildings & thermal systems
Digital & industrial equipment
OEM & specialist equipment
Existing equipment upgrades
Make the first review useful
Send the equipment brief, not just a fan diameter.
01 · Air duty
Required airflow and pressure at the same operating point, with filter and coil conditions.
02 · Mechanical fit
Available envelope, mounting pattern, inlet and outlet arrangement, plus service access.
03 · Power & control
Supply voltage and frequency, speed command, feedback signal and connector requirements.
04 · Validation needs
Temperature, noise target, exposure conditions and model-specific documents required for the destination market.
Bring us your equipment challenge.
Share a drawing, the operating point and your project stage. LONGWELL can review the available fan families and the next checks needed for your application.
See why the fan is needed before choosing one.
Each guide follows the airflow through one machine, identifies the fan's task and lists the inputs needed for a useful LONGWELL selection review.
Dry-type transformers reject winding and core losses by natural convection. In a design prepared for forced-air cooling, bottom-mounted cross-flow fans can distribute air along the coil width and support upward flow through the winding channels.
3D GUIDE 030Aspirating Smoke Detection Airflow Guide →A small air mover continuously draws samples from holes across the protected space and transports them through a pipe network to a remote sensing chamber. It moves measurement samples; it does not ventilate the room.