EV Charging Stations
Filtration for Power Equipment
Cleanroom & Semiconductor
Ultra-High Cleanliness Filtration
Commercial HVAC
Central Air System Filtration
Data Centers
Precision Equipment Protection
Livestock & Farming
Farming Environment Purification
Spray Booths & Industrial Dust
Paint Mist & Dust Purification
Filtration for Power Equipment
Professional air filtration for EV charging devices, protecting against dust and sand ingress to ensure stable, reliable operation of charging piles and station infrastructure.
View Related Products →Ultra-High Cleanliness Filtration
Ultra-high efficiency filtration for semiconductor wafer fabs and precision electronics cleanrooms, capturing nano-scale particles to meet ISO Class 1–3 standards and maximize product yield.
View Related Products →Central Air System Filtration
High-efficiency filtration for commercial building HVAC systems, improving indoor air quality, reducing energy consumption, and extending equipment service life.
View Related Products →Precision Equipment Protection
Precision air filtration for data centers, shielding servers and critical hardware from dust contamination to keep cooling systems running efficiently and reliably.
View Related Products →Farming Environment Purification
Dedicated filtration systems for farms and livestock facilities — capturing dust, adsorbing ammonia, and inhibiting pathogen spread to improve animal health and overall productivity.
View Related Products →Paint Mist & Dust Purification
Designed for spray booths and grinding workshops, efficiently capturing paint mist, metal dust, and wood chips to meet emission standards while protecting finished surface quality.
View Related Products →
Pre-Filter (G1–G4)
First-Stage Large-Particle Capture
Medium-Efficiency Filter (F5–F9)
Precise PM2.5 Capture
HEPA High-Efficiency Filter
Sterile-Grade Purification
ULPA Ultra-High Efficiency Filter
Sub-Micron Particle Capture
First-Stage Large-Particle Capture
The first line of defense, capturing particles ≥5 μm such as dust, hair, and fibers to protect downstream filters and extend overall system service life.
View Related Products →Precise PM2.5 Capture
Captures fine particles of 1–5 μm including PM2.5, pollen, and mold spores, significantly improving indoor air quality for commercial HVAC and ventilation systems.
View Related Products →Sterile-Grade Purification
≥99.97% filtration efficiency for particles ≥0.3 μm, delivering sterile-grade clean air widely used in medical, pharmaceutical, and electronics manufacturing.
View Related Products →Sub-Micron Particle Capture
≥99.9995% efficiency for particles ≥0.12 μm, meeting the extreme cleanliness demands of semiconductor fabs, aerospace, and other ultra-precision applications.
View Related Products →
High-Temperature Resistant
Industrial-Grade Heat Tolerance
Washable & Reusable
Cut Costs, Reduce Waste
Activated Carbon
Odor & Harmful Gas Removal
Bag Filter
High Dust-Holding, Long Life
Panel / Pleated Filter
Compact Space-Saving Design
Low-Resistance Airflow
Energy-Saving Operation
Industrial-Grade Heat Tolerance
Built with specialized heat-resistant materials, operating stably up to 250°C for paint ovens, industrial dryers, and high-temperature process environments.
View Related Products →Cut Costs, Reduce Waste
Cleanable by water washing or air blowing, reusable multiple times to significantly reduce replacement frequency and O&M costs — an economical, eco-friendly choice.
View Related Products →Odor & Harmful Gas Removal
Leverages activated carbon's high adsorption capacity to eliminate odors, VOCs, and formaldehyde, ideal for newly renovated spaces and industrial exhaust treatment.
View Related Products →High Dust-Holding, Long Life
Bag-style construction delivers a larger filtration area, high dust-holding capacity, and extended service life — ideal for high-dust environments with reduced replacement frequency.
View Related Products →Compact Space-Saving Design
Compact form factor for easy installation and replacement; pleated structure maximizes filtration area within a small footprint for higher efficiency.
View Related Products →Energy-Saving Operation
Low-resistance design minimizes pressure drop while maintaining filtration performance, reducing fan energy consumption for cost-effective, eco-friendly operation.
View Related Products →
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HVAC Filters
HVAC filtration is built as a ladder: a coarse stage takes the bulk of the dust, a medium stage protects the final filter, and the final stage decides the air quality in the occupied space. Whalesens supplies the media that the first two rungs are made from — synthetic HVAC filter media in G2, G3 and G4, in 10, 15 and 20 mm thicknesses — and the finished filters for all three stages.
The media is chosen by the dust load and by the pressure drop budget of the air handling unit, not by the filter grade alone. If you need a finished panel, pleated or bag filter for the same system, the Panel & Pleated Filters and Dust Collection Filters ranges cover those stages.
HVAC Filters range
Selection table
| Model | Filtration grade | Thickness | Weight | Initial resistance | Final resistance | Dust holding capacity |
|---|---|---|---|---|---|---|
| HVAC Air Filter Media | G2, G3, G4 | 10, 15, 20 mm | 150, 200, 250 g/m² | 20 – 25 Pa | 200 – 250 Pa | 450, 500, 580 g/m² |
How it compares
G2, G3 and G4 pre-filtration
G2 stops lint and insects and is used where the air is visibly dirty; G3 is the general first stage in a commercial air handling unit; G4 is the usual choice directly ahead of a medium or fine filter, because it takes enough of the dust load to materially extend the life of the stage behind it.
Media vs a finished panel filter
Media in rolls or slices is cut and fitted on site, which suits a large flat area, a non-standard frame or a filter maker buying material. A finished panel filter arrives framed, gasketed and with a declared grade, which is what most HVAC contractors specify.
Pre-filter vs main filter
A pre-filter is not there to clean the air — it is there to keep the main filter alive. Doubling the dust load on the coarse stage is usually cheaper than replacing the medium stage twice as often, which is the whole argument for a staged system.
Where it is used
Commercial buildings
Air handling units in offices, hotels, hospitals and public buildings, where the filter has to be changed on a planned maintenance round.
Commercial building case →Data centres
Computer room air handling and free cooling, where filter resistance shows up directly in fan energy and PUE.
Data centre HVAC solutions →Airports and transport buildings
Large terminal air handling systems with a high outdoor dust load and a long duct run.
Airport air filtration case →Schools and institutions
Classrooms and public buildings where filter changes are scheduled around term time and a low maintenance burden matters.
School filtration case →