Variable Speed
Units with variable speed control — EC motors or inverter drives. Fan power falls with the cube of speed, so trimming to actual demand is where most of the running-cost saving in ventilation comes from.
- 72products with this specification
- 44verified manufacturers
- 12equipment categories
Which equipment is available as Variable Speed
A specification like this cuts across categories, so the useful question is not “what is it” but “which equipment types offer it, and how much choice is there in each”.
Applications that call for Variable Speed
- Commercial Kitchen Ventilation & Refrigeration Lets extract volume follow the cooking line rather than running flat out all service.
- Data Center Cooling Equipment Fan power falls roughly with the cube of speed, so part-load hours are where the savings actually are.
- Cleanroom & Pharmaceutical HVAC The mechanism that keeps airflow constant as HEPA filters load.
- Pharmaceutical & Vaccine Cold Chain Storage Holds a stable band instead of cycling around it — stability is what mapping rewards.
- Paint Booth & Spray Finishing Ventilation Lets extract follow spray and flash-off cycles instead of running flat out all shift.
- Welding Fume Extraction Matches suction to the number of stations actually welding.
- Warehouse Ventilation & Destratification Gentle continuous mixing works better than intermittent high speed.
- Layer House Ventilation Staged and proportional control keeps rate matched to conditions rather than cycling.
- Swine Barn Ventilation Stage ventilation smoothly across growth phases rather than cycling.
- Edge & Micro Data Centre Cooling Loads are small and vary; fixed-speed equipment cycles and wears.
- Free Cooling Retrofit Fan power falls with the cube of speed — the largest single saving in the system.
- High-Density & AI Rack Cooling Flow follows rack load rather than running at design flow permanently.
- Cloud & Dark Kitchen Ventilation Lets each unit follow its own service hours instead of running flat out.
- Hotel & Banquet Kitchen Ventilation The difference between paying for the peak all day and paying for what you use.
- Vertical Farm & Indoor Growing HVAC Trimming to actual load across the light and dark cycle.
- Mushroom Growing Climate Control CO₂ is steered continuously; fixed-speed ventilation cannot follow the phases.
- Indoor Pool Dehumidification Evaporation varies with bather load and cover use; fixed-speed over-ventilates and wastes heat.
- Semiconductor & Electronics Cleanroom Air Closed-loop control holding flow constant as filters load.
- Hospital Operating Theatre Ventilation Holding the cascade while doors are used, and setting back unoccupied theatres.
- Fan Filter Unit Selection Closed-loop constant volume, not open-loop speed setting.
Often specified alongside
Specification combinations that actually occur in this catalogue — counted from the products themselves, not assumed.
Showing 1–36 of 72 results
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- 12V
- Blade Diameter 7in
- Power Source Electric
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Adjustable Speed Boiler, Cast Iron
$1,100.00- Customised Sizes
- Cast Iron
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- 18–28.9 in
- 170 W
- Material Metal
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- 8001-10000 BTU
- Power Type AC
- 22-44 dB(A)
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- 230 VAC
- 0.9/1.2/1.5/2m
- 110V/60HZ
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- 16-42m3/min
- Power Source Electric
- Aluminum Alloy
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- 220V~480V
- Blade Material iorn
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- 220V~480V
- Blade Material iorn
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- 12 V
- Power Source Solar
- Material Plastic
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- 220 V
- Power Source Electric
- Material PA66
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- 220 V
- Power Source Electric
- Material PA66
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- 230 V
- Power Source Electric
- Cast Iron
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- 230 V
- Power Source Electric
- Cast Iron
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- 12V/24V
- 30-75CFM
- 92x92x25mm
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- 24/48V
- Power Source Electric
- Stainless Steel
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- 24V
- Power Source Electric
- Stainless Steel
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- 16-18 inch
- 50 W
- Material Metal
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- Power Source Battery
- Material Plastic
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- 230V
- Galvanized Steel
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- Voltage 220VAC
- Stainless Steel
- 3570RPM±10%
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- 380V
- Blade Material Plastic
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- 110-240V
- Blade Material Plastic
- 1850rpm
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Centrifugal Fan, AHU, HVAC
$68.00- 380 V
- High Airflow
- Stainless Steel
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- 380 V
- High Airflow
- Stainless Steel
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- 440 V
- Corded Electric
- Aluminum Alloy
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- 380 V
- High Airflow
- Stainless Steel
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- Power Interface USB
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- 20 CFM
- 3 W
- Noise 17dbA
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- 12D VC
- 12-55CFM
- Power Interface 2PIN
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- 12D VC
- 12-55CFM
- Power Interface 2PIN
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- 12V-230 V
- Aluminum Alloy
- 4000 RPM
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- 12V/24V
- Stainless Steel
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- 12V/24V
- Stainless Steel
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- 214 CFM
- 30W
- Blade Material plastic
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- 5 V
- Power Source Electric
- Blade Material Plastic
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- Power Source Electric
- Stainless Steel