The technology
behind CLER 

Continuous clean air. No filters. No waste.
Here's how it works.

Get CLER

Get CLER

Cleaner air without filter changes.

Traditional filtration traps particles in filters that clog over time. CLER separates particles by weight using centrifugal force. No filters to replace, no performance drop, just continuous clean air.

Get Cleaner Air

Get Cleaner Air

Get Cleaner Air

“After four months of operation, the chimney sweep said he had never seen cleaner ventilation ducts. Our filters appeared unused and required no replacement, even though we typically change them three times per year.”

Magnus, Franchisee

McDonald's Gotland

Read Customer Case

Read Customer Case

Read Customer Case

No filter replacements - System runs continuously without clogging or maintenance stops.

No filter replacements - System runs continuously without clogging or maintenance stops.

No filter replacements - System runs continuously without clogging or maintenance stops.

Constant performance - No pressure drop over time. Peak efficiency 24/7.

Constant performance - No pressure drop over time. Peak efficiency 24/7.

Constant performance - No pressure drop over time. Peak efficiency 24/7.

Self-cleaning technology - Uses just 0.5 dl/month to automatically rinse particles away.

Self-cleaning technology - Uses just 0.5 dl/month to automatically rinse particles away.

Self-cleaning technology - Uses just 0.5 dl/month to automatically rinse particles away.

Handles all particle sizes - Wet, dry, small or large. Removed in one step.

Handles all particle sizes - Wet, dry, small or large. Removed in one step.

Handles all particle sizes - Wet, dry, small or large. Removed in one step.

Easy installation - Fits into existing systems. Setup takes less than a day.

Easy installation - Fits into existing systems. Setup takes less than a day.

Easy installation - Fits into existing systems. Setup takes less than a day.

Install it. Then forget it.

Learn how CLER Pro works with your ventilation systems. Hit the button below or call us at +46 10 168 68 68 

Learn how CLER Pro works with your ventilation systems. Hit the button below or call us at +46 10 168 68 68 

Get in touch

Get in touch

Get in touch

How CLER works

Traditional air cleaning creates a problem: catching tiny particles requires thick filter material that blocks airflow, uses more energy, and needs frequent replacement. The result is high maintenance costs and environmental waste. 

CLER's Perpetual Filtration Technology (PFT) solves this. We use spinning air instead of filter material to catch particles down to PM0.5 with minimal pressure drop, no performance loss, and zero filter waste. 

Get CLER

Get CLER

Get CLER

Centrifugal Separation

Lamella Stack Design

Self-Cleaning System

  • 5000G Centrifugal separation
    Extreme forces catch tiny particles

    5000G Centrifugal separation Extreme forces catch tiny particles

    Traditional fiber filters rely on passive catching. Particles stick to filter material through contact or static electricity. This makes PM2.5 capture inefficient, and performance drops as filters fill up. 

    CLER's Perpetual Filtration Technology creates spinning forces up to 5,000 g. These forces separate even the smallest particles (PM2.5 and smaller) from the airstream based on weight. Because separation uses physics rather than filter material, performance stays the same no matter how many particles come through. 

    No performance drops. No filling up. Reliable PM2.5 removal, continuously. 

  • Lamella Stack Design
    Maximum separation surface without pressure loss 

    Air passes through narrow gaps between hundreds of stacked cone-shaped plates. This creates an effective separation area of 25,000 m². The plate shape uses spinning force to separate particles by weight and pushes them away from the clean airstream. 

    This design delivers steady particle catching with minimal pressure drop, even with high moisture, dust bursts, or changing airflow. Unlike filter material that blocks airflow as it fills, the plate stack keeps stable pressure and energy performance during operation. 

    The result is predictable system performance and lower fan energy use over the equipment's life. 

    Air passes through narrow gaps between hundreds of stacked cone-shaped plates. This creates an effective separation area of 25,000 m².

    The plate shape uses spinning force to separate particles by weight and pushes them away from the clean airstream. 

    This design delivers steady particle catching with minimal pressure drop, even with high moisture, dust bursts, or changing airflow.

    Unlike filter material that blocks airflow as it fills, the plate stack keeps stable pressure and energy performance during operation. 

    The result is predictable system performance and lower fan energy use over the equipment's life. 

  • Self-cleaning system
    No maintenance needed at commercial scale 

    CLER's patented cleaning system keeps plates clear using minimal cleaning liquid. For a 1,000 m² building, only 0.5 dl per month is needed. The system automatically rinses caught particles from the 25,000 m² separation surface and keeps peak performance without manual work. 

    This removes filter changes entirely. No scheduled downtime. No waste disposal. No changing performance. Just continuous operation with very clean air output and lower total ownership cost. 

  • Get CLER

    Get CLER

    Get CLER

    Contact us

    Contact us

    Contact us

No Cure. No Pay.

If you are not satisfied after two months, we will gladly return to remove the equipment and reinstateyour previous solution at no cost and no risk.​​

If you are not satisfied after two months, we will gladly return to remove the equipment and reinstate your previous solution at no cost and no risk.​​

Get CLER

No Cure. No Pay.

If you are not satisfied after two months, we will gladly return to remove the equipment and reinstateyour previous solution at no cost and no risk.​​

If you are not satisfied after two months, we will gladly return to remove the equipment and reinstate your previous solution at no cost and no risk.​​

Get CLER

No Cure. No Pay.

If you are not satisfied after two months, we will gladly return to remove the equipment and reinstateyour previous solution at no cost and no risk.​​

If you are not satisfied after two months, we will gladly return to remove the equipment and reinstate your previous solution at no cost and no risk.​​

Get CLER

Continuous clean air.

Clean air shouldn't come at the expense of the environment or your health.

Get in touch

Get in touch

Get in touch

FAQ

How does CLER work without filters?
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Instead of trapping particles in disposable filters, our system uses centrifugal force to separate them by weight and density — removing them before they enter the ventilation system.

Can it handle greasy air from kitchens or fast food environments?
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Yes. Our solution is designed for demanding environments like Quick Service Restaurants (QSR), where traditional filters clog quickly. It separates even sticky particles like oil and grease, keeping ducts clean.

Is the air really clean enough to reuse?
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Yes. The purified air is so clean it can be safely reused in public areas, contributing to energy savings by retaining warmth from exhaust air.

What happens to the particles that are removed?
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They’re collected in a self-draining unit and removed from the system automatically. No manual cleaning required.

How sustainable is this solution?
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Very. It eliminates the need for disposable filters, reducing waste and CO₂ emissions from manufacturing and transportation. It’s a long-term solution designed with the planet in mind.

Can this be retrofitted to existing systems?
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Yes. Our technology can be integrated into most existing ventilation systems to enhance performance and reduce maintenance.

Do I need to replace any parts?
icon

No. The system is entirely filter-free and self-cleaning. There are no consumables or recurring maintenance parts to replace.

Is it more expensive than traditional filtration systems?
icon

No — the cost is comparable to traditional systems. The key difference is that our solution eliminates ongoing expenses like filter replacements and maintenance. You get the same initial investment, but with significantly lower operating costs over time.

How does CLER work without filters?
icon

Instead of trapping particles in disposable filters, our system uses centrifugal force to separate them by weight and density — removing them before they enter the ventilation system.

Can it handle greasy air from kitchens or fast food environments?
icon

Yes. Our solution is designed for demanding environments like Quick Service Restaurants (QSR), where traditional filters clog quickly. It separates even sticky particles like oil and grease, keeping ducts clean.

Is the air really clean enough to reuse?
icon

Yes. The purified air is so clean it can be safely reused in public areas, contributing to energy savings by retaining warmth from exhaust air.

What happens to the particles that are removed?
icon

They’re collected in a self-draining unit and removed from the system automatically. No manual cleaning required.

How sustainable is this solution?
icon

Very. It eliminates the need for disposable filters, reducing waste and CO₂ emissions from manufacturing and transportation. It’s a long-term solution designed with the planet in mind.

Can this be retrofitted to existing systems?
icon

Yes. Our technology can be integrated into most existing ventilation systems to enhance performance and reduce maintenance.

Do I need to replace any parts?
icon

No. The system is entirely filter-free and self-cleaning. There are no consumables or recurring maintenance parts to replace.

Is it more expensive than traditional filtration systems?
icon

No — the cost is comparable to traditional systems. The key difference is that our solution eliminates ongoing expenses like filter replacements and maintenance. You get the same initial investment, but with significantly lower operating costs over time.

How does CLER work without filters?
icon

Instead of trapping particles in disposable filters, our system uses centrifugal force to separate them by weight and density — removing them before they enter the ventilation system.

Can it handle greasy air from kitchens or fast food environments?
icon

Yes. Our solution is designed for demanding environments like Quick Service Restaurants (QSR), where traditional filters clog quickly. It separates even sticky particles like oil and grease, keeping ducts clean.

Is the air really clean enough to reuse?
icon

Yes. The purified air is so clean it can be safely reused in public areas, contributing to energy savings by retaining warmth from exhaust air.

What happens to the particles that are removed?
icon

They’re collected in a self-draining unit and removed from the system automatically. No manual cleaning required.

How sustainable is this solution?
icon

Very. It eliminates the need for disposable filters, reducing waste and CO₂ emissions from manufacturing and transportation. It’s a long-term solution designed with the planet in mind.

Can this be retrofitted to existing systems?
icon

Yes. Our technology can be integrated into most existing ventilation systems to enhance performance and reduce maintenance.

Do I need to replace any parts?
icon

No. The system is entirely filter-free and self-cleaning. There are no consumables or recurring maintenance parts to replace.

Is it more expensive than traditional filtration systems?
icon

No — the cost is comparable to traditional systems. The key difference is that our solution eliminates ongoing expenses like filter replacements and maintenance. You get the same initial investment, but with significantly lower operating costs over time.