Spot cooling
A cooler is positioned to direct cooled airflow towards one workstation, machine operator or heat-exposed working position.
This approach is useful when only a small part of a much larger building is permanently occupied.
Industrial Evaporative Air Coolers for Large Workspaces
Mobile high-airflow cooling for warehouses, workshops, production halls, logistics facilities and other large ventilated workspaces where conventional air conditioning may be impractical.
5,000–48,000 m³/h
Airflow range
Up to 600 m²
Nominal application area
Purchase & rental
Flexible supply options
01
Why large industrial spaces are difficult to cool
Cooling a warehouse or production hall is fundamentally different from cooling an office or other enclosed room.
Industrial buildings often combine large internal volumes, high ceilings, open loading doors, solar heat gain and continuous air exchange. Machinery, motors, vehicles, ovens, dryers and production processes can add further heat directly inside the workspace.
Conventional air-conditioning systems generally attempt to maintain the temperature of an entire enclosed volume. In a large industrial building, that may mean conditioning thousands of cubic metres of air while doors, loading bays or extraction systems remain open.
Industrial evaporative cooling uses a different strategy. Instead of necessarily conditioning the complete building, high-volume cooled airflow can be directed through the areas where operators actually work.
ENGINEERING PRINCIPLE
Cool the occupied zone — not automatically the entire building.
In many industrial facilities, operators occupy only a small proportion of the total building volume. Mobile cooling allows airflow to be positioned around workstations, production lines and high-heat areas.
02
How industrial evaporative air cooling works
Evaporative cooling uses the natural heat absorption that occurs when water changes from liquid to vapour.
01
Warm air enters the cooler
Ambient air is drawn into the unit at a high volumetric airflow.
02
Incoming air can be pre-filtered
Industrial KM configurations incorporate G4 coarse air pre-filtration before the air reaches the evaporative section.
03
Air passes through the wetted medium
Water is continuously distributed through the evaporative medium. Part of this water evaporates into the incoming air.
04
Evaporation absorbs heat
The phase change from liquid water to vapour requires energy. This energy is taken from the incoming air, reducing its dry-bulb temperature.
05
The fan distributes cooled air
High-volume airflow carries the cooled air towards operators, workstations or a defined cooling zone.
03
Evaporative cooling requires air renewal
An evaporative cooler should not normally be treated as a closed-loop air-conditioning system.
Evaporative cooling adds moisture to the treated air. The cooled air introduced into the workspace therefore needs a path through the building.
Loading doors, windows, roof vents, wall openings or mechanical extraction can provide the required exhaust path.
The objective is to establish a controlled airflow pattern through the occupied space rather than continuously recirculating the same increasingly humid air.
Fresh warm air
↓
Evaporative cooler
↓
Occupied work zone
↓
Air leaves building
04
Understanding the achievable cooling effect
Temperature reduction depends on the actual atmospheric conditions.
Evaporative cooling performance is influenced primarily by the incoming air temperature and relative humidity.
Hot, relatively dry air has a greater capacity to absorb additional water vapour and therefore offers greater evaporative cooling potential. As relative humidity increases, the available temperature reduction decreases.
Internal heat load, ventilation and cooler placement also influence conditions experienced by operators.
Illustrated example: approximately 9°C temperature reduction
This is an example operating condition, not a guaranteed temperature
reduction. Actual performance depends on temperature, relative humidity,
airflow and site conditions.
05
Spot cooling, zone cooling and distributed cooling
The correct cooling strategy depends on where heat is generated, where operators are positioned and how air can move through the building.
Zone cooling
One or more units cool a defined production line, maintenance bay, picking zone, assembly area or workshop section.
The cooling capacity is concentrated where the thermal load and operator exposure are highest.
Distributed cooling
Several mobile coolers are distributed throughout a large facility to create multiple cooled working zones.
This can provide better airflow distribution than relying on one central unit in a large or irregular building.
06
How to select the correct industrial air cooler
Floor area provides a useful first indication, but industrial evaporative cooling should not be sized from square metres alone.
Floor area
Determine whether the requirement applies to the complete building
or only to a defined occupied cooling zone.
Ceiling height
A 250 m² workshop with a 4 m ceiling contains considerably less
air volume than a 250 m² industrial hall with a 10 m ceiling.
Internal heat load
Ovens, motors, compressors, machinery, vehicles, dryers and other
production equipment can add substantial sensible and radiant heat.
Ambient temperature
Higher incoming air temperatures can provide greater evaporative
cooling potential when humidity remains sufficiently low.
Relative humidity
Relative humidity determines how much additional water vapour the
incoming air can absorb and therefore directly influences the
achievable cooling effect.
Ventilation & air exchange
Doors, loading bays, windows, roof vents and mechanical extraction
determine how fresh air enters and humidified air leaves the facility.
Operator positions
Targeting occupied workstations can require substantially less total
airflow than attempting to cool the complete building volume.
Dust & airborne contamination
Workshops and industrial environments with coarse airborne contamination
can benefit from an industrial KM configuration with G4 pre-filtration.
07
Professional VL or industrial KM configuration?
Several cooling capacities are available in both professional and industrial configurations. The required airflow can therefore be selected separately from the required level of air pre-filtration.
Professional evaporative cooling
VL configurations are intended primarily for relatively clean commercial, professional and light-duty working environments where the main requirement is high-volume evaporative cooling.
- Mobile high-airflow cooling
- Professional and commercial environments
- No dedicated G4 industrial pre-filtration stage
- Multiple capacities for different workspace sizes
- Standard 1-year warranty
Industrial cooling with G4 pre-filtration
KM configurations are designed for more demanding industrial environments where dust and coarse airborne contamination may otherwise enter the cooling system.
- Industrial application configuration
- Pureflow G4 incoming-air pre-filtration
- High-volume evaporative cooling
- Suitable for factories, workshops and industrial warehouses
- Extended 5-year warranty
08
Evaporative air cooler range
Eight configurations cover applications from smaller professional workspaces to large industrial cooling zones requiring up to 48,000 m³/h of airflow.
VL50
Up to 60 m²
VL120 EC-W
Up to 150 m²
KM12 EC-W
Industrial · 150 m²
KM22 EC-W
Industrial · 250 m²
VL300 EC-W
Up to 400 m²
KM30 EC-W
Industrial · 400 m²
KM48
Industrial · 600 m²
VL50
Up to 60 m² · 5,000 m³/hThe most compact cooler in the range. Intended for smaller professional spaces, local work zones and applications where a lightweight mobile cooling solution is required.
VL120 EC-W
Up to 150 m² · 12,000 m³/hA professional high-airflow configuration for larger commercial, workshop and general workplace cooling applications.
KM12 EC-W
Up to 150 m² · 12,000 m³/hThe industrial equivalent in the 12,000 m³/h airflow class, adding Pureflow G4 incoming-air pre-filtration and a 5-year warranty.
VL220 EC-W
Up to 250 m² · 22,000 m³/hDesigned for medium-sized professional spaces where a larger cooling zone is required without the industrial G4 pre-filtration stage.
KM22 EC-W
Up to 250 m² · 22,000 m³/hA versatile industrial configuration for workshops, warehouses, logistics facilities and production environments requiring high airflow with G4 pre-filtration.
VL300 EC-W
Up to 400 m² · 30,000 m³/hHigh-capacity professional cooling for large ventilated commercial and working environments.
KM30 EC-W
Up to 400 m² · 30,000 m³/hHigh-volume industrial cooling for manufacturing, warehousing, logistics and other demanding environments where G4 pre-filtration is beneficial.
KM48
Up to 600 m² · 48,000 m³/hThe largest cooler in the range, designed for high-volume industrial work zones, production halls, warehouses and distributed cooling applications.
| Model | Nominal area | Maximum airflow | Configuration | Warranty |
|---|---|---|---|---|
| VL50 | Up to 60 m² | 5,000 m³/h | Professional | 1 year |
| VL120 EC-W | Up to 150 m² | 12,000 m³/h | Professional | 1 year |
| KM12 EC-W | Up to 150 m² | 12,000 m³/h | Industrial + G4 | 5 years |
| VL220 EC-W | Up to 250 m² | 22,000 m³/h | Professional | 1 year |
| KM22 EC-W | Up to 250 m² | 22,000 m³/h | Industrial + G4 | 5 years |
| VL300 EC-W | Up to 400 m² | 30,000 m³/h | Professional | 1 year |
| KM30 EC-W | Up to 400 m² | 30,000 m³/h | Industrial + G4 | 5 years |
| KM48 | Up to 600 m² | 48,000 m³/h | Industrial + G4 | 5 years |
09
Purchase, rental and model availability
Industrial cooling requirements may be permanent, seasonal or temporary. Filtra International therefore supplies evaporative air coolers through several routes.
2026 models available now
Current-generation coolers are available for purchase and rental, subject to stock availability.
This option is intended for businesses that require cooling immediately, during the current season or for a temporary operating period.
02
10% EARLY-ORDER DISCOUNT
2027 models with Wi-Fi
The 2027 generation can already be ordered in advance.
Orders placed by 30 November 2026 receive 10% off a 2027 model.
The 2027 models include Wi-Fi connectivity and continuously adjustable airflow from 0–100%. Delivery is scheduled from April 2027.
Fully serviced ex-rental units
Selected coolers returning from the rental fleet may be made available for purchase at a reduced price.
Each unit is inspected, serviced and function-tested before resale. Ex-rental equipment is supplied with the applicable standard factory warranty.
PRODUCT AVAILABILITY
View the cooler collection →
Current availability, rental equipment and ex-rental stock can change throughout the cooling season.
10
Typical industrial evaporative cooling applications
Evaporative cooling is particularly useful where industrial processes create high heat loads and operators occupy identifiable working zones.
Automotive workshops & garages
Vehicle maintenance areas commonly combine open workshop doors, large internal volumes and technicians working at fixed positions around cars, trucks or other vehicles.
Mobile cooling allows airflow to follow the active workshop zones rather than attempting to cool the complete building.
Industrial laundries
Washing, drying, ironing and finishing equipment continuously releases heat into occupied production areas.
Industrial laundry workshops can reach approximately 40–45°C, making operator-zone cooling particularly relevant around washing, drying and ironing stations.
Metalworking & heavy industry
Furnaces, extrusion, wire drawing, welding, machining and heavy industrial equipment can generate strong process and radiant heat.
High-volume mobile cooling can be positioned around operator stations without attempting to air-condition an entire heavy industrial hall.
Food production & bakeries
Industrial ovens, baking tunnels, drying equipment and hot production processes can create concentrated thermal loads along food production lines.
Cooling can be directed towards operators working near ovens, process exits and packaging stations.
Train & bus maintenance workshops
Rail and public-transport maintenance facilities are often high-bay buildings containing very large volumes.
Technicians, however, work in comparatively small intervention zones around trains and buses, making targeted airflow a practical cooling strategy.
Paper, cardboard & printing
Paper machines, corrugating equipment and high-speed printing lines generate continuous heat over long production areas.
Multiple mobile coolers can be distributed along a production line to provide airflow around occupied operator stations.
11
Operation, water hygiene and maintenance
Evaporative cooling is mechanically straightforward, but proper maintenance of the water system and evaporative medium is important for stable performance and equipment life.
Regular water draining
Regular draining reduces accumulated deposits and helps prevent pipe blockage, stagnant-water odours and loss of cooling performance.
Typical guidance- Approximately once per week in standard environments
- Approximately every other day in heavily dusty environments
Pre-filter inspection
Where G4 pre-filters are fitted, their condition should be checked periodically because accumulated contamination increases resistance and reduces effective filtration performance.
Typical guidance- Replace at least once per year
- Replace sooner where contamination levels require it
Evaporative pad inspection
The evaporative medium depends on even water distribution across its full surface.
Inspection points- No dry areas
- Even water distribution
- No excessive clogging
Seasonal storage
The evaporative medium should be thoroughly dried before long-term winter storage.
Running the fan without water before storage helps remove residual moisture from the evaporative pad.
IMPORTANT
Maintenance frequency should always be adapted to the actual operating environment. Dusty production areas and contaminated water supplies can require shorter maintenance intervals than relatively clean commercial spaces.
12
Industrial evaporative air cooling FAQ
Technical questions commonly considered when evaluating evaporative cooling for an industrial or professional workspace.
What is an industrial evaporative air cooler?
An industrial evaporative air cooler draws warm ambient air through a water-wetted evaporative medium.
Water evaporation absorbs heat from the incoming air before a high-volume fan distributes the resulting cooler air into the workspace.
Is evaporative cooling suitable for warehouses?
Yes. Warehouses are often suitable because they contain large air volumes, regularly open loading doors and significant natural or mechanical air exchange.
Mobile units can also target occupied picking, packing and logistics zones rather than trying to maintain the entire warehouse at a fixed temperature.
Do doors and windows need to remain closed?
No. Evaporative cooling generally requires continuous air renewal. Humidified air should be allowed to leave through doors, windows, roof vents or mechanical extraction while fresh incoming air replaces it.
How much can an evaporative air cooler reduce the air temperature?
The achievable temperature reduction depends mainly on the incoming air temperature and relative humidity.
The illustration on this page shows an example of approximately 9°C temperature reduction under a particular operating condition. This should not be interpreted as a guaranteed temperature reduction under all environmental conditions.
Does humidity affect evaporative cooling?
Yes. Relative humidity is one of the primary factors determining evaporative cooling potential.
Hot, relatively dry air can absorb more additional water vapour than already-humid air. Cooling potential therefore decreases as relative humidity rises.
What size industrial air cooler do I need?
Correct selection considers more than floor area. Relevant factors include ceiling height, total building volume, internal heat sources, ventilation, relative humidity and the location of occupied work zones.
The available range covers nominal application areas from approximately 60 to 600 m².
What is the difference between VL and KM evaporative air coolers?
VL configurations are intended primarily for professional and relatively clean working environments.
KM configurations are designed for industrial applications and add G4 incoming-air pre-filtration. KM industrial configurations also carry an extended 5-year warranty compared with the standard 1-year warranty of the VL range.
Can industrial air coolers be rented?
Yes. Filtra International supplies evaporative air coolers for both purchase and rental, subject to equipment availability.
Rental can be particularly useful for seasonal heat, temporary production requirements, short-term projects or businesses that only require additional cooling during the warmer months.
Can I already order a 2027 model with Wi-Fi?
Yes. The 2027 range can already be ordered in advance.
Orders placed by 30 November 2026 qualify for the current 10% early-order discount. The 2027 generation includes Wi-Fi connectivity and is scheduled for delivery from April 2027.
Are serviced ex-rental air coolers available?
Selected units returning from the rental fleet may be offered for sale at a reduced price.
These units are inspected, serviced and function-tested before resale and are supplied with the applicable standard factory warranty.
How often does an evaporative air cooler require maintenance?
Maintenance frequency depends on the operating environment. Regular water draining, filter inspection where applicable and inspection of the evaporative medium are important.
Dusty industrial environments generally require shorter maintenance intervals than relatively clean commercial spaces.
COOLING SYSTEM SELECTION
Provide your workspace details
Floor area, ceiling height, application, ventilation and internal heat sources provide the starting information required to identify an appropriate cooler capacity and configuration.