Kitchen air purification with grease separation

Self-cleaning grease extraction and air purification for restaurants and commercial kitchens.

No filter changes, no duct cleaning, no waste.

Self-cleaning grease extraction and air purification for restaurants and commercial kitchens.

Simple installation.

No maintenance.

Cleaner ducts than ever.

Grease-free extraction
with CLER Pro

Grease-free extraction with CLER

Commercial kitchens generate massive amounts of grease, smoke, and particles that clog traditional filters within weeks. CLER Pro eliminates that cycle.

Our self-cleaning system captures grease, oil mist, smoke, and particles down to PM2.5 before they reach your ducts. No clogged filters. No duct fires. No weekly maintenance shutdowns.

CLER Pro integrates into existing kitchen ventilation. Installation takes less than a day. After that, it runs continuously, capturing wet grease, dry particles, smoke, and odors automatically.

  • Cut maintenance. Lower your costs. Gain peace of mind.

    Cut maintenance. Lower your costs. Gain peace of mind.

Cleaner ducts than ever. No filter change. No maintenance. Available today. 

Cleaner ducts than ever. No filter change. No maintenance. Available today. 

"After four months, the chimney sweep said he'd never seen cleaner ducts. Our filters look unused and didn't need any replacement"

"After four months, the chimney sweep said he'd never seen cleaner ducts. Our filters look unused and didn't need any replacement"

"After four months, the chimney sweep said he'd never seen cleaner ducts. Our filters look unused and didn't need any replacement"

Magnus, franchiser

McDonald's

Magnus, franchiser

McDonald's

Air purification for commercial kitchens and restaurants

Our system is maintenance-free, scalable and energy efficient. It's built to handle the demanding conditions of commercial kitchens, from quick service restaurants to full-service dining and institutional food service.

Grease extraction at the kitchen hood

CLER Pro captures grease and oil at the kitchen hood, preventing it from entering the ventilation system. This protects ducts, exhaust fans, and filters from buildup in Quick Services Restaurants.

Restaurant kitchen maintenance reduced by up to 90%

Restaurants that typically change grease filters 3 to 4 times per year and schedule duct cleaning 2 to 3 times per year only need service once every 3 years with CLER Pro.

Integrates into existing kitchen exhaust systems

Our solution works with existing kitchen ventilation setups, improving performance without requiring structural changes to your building or equipment.

McDonald's Gotland on their collaboration
with CLER

McDonald's Gotland on their collaboration
with CLER

Get in touch to explore what we can do for your kitchen.

Get in touch to explore what we can do for your kitchen.

No Cure. No Pay.

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.​​

No Cure. No Pay.

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.​​

Patented technology Grease-free extraction

Patented technology
Grease-free extraction

CLER Pro has three core components that handle the toughest kitchen environments.

High-speed rotation creates extreme centrifugal force that separates grease, oil, and smoke particles by weight and density. Our lamella design captures everything before it reaches your ducts. And the self-cleaning system rinses it all away automatically.

No filters. No grease buildup. No duct fires

5000G centrifugal force for heavy grease

Our Perpetual Filtration Technology (PFT) spins air at extreme speeds, creating forces up to 5,000 g. This separates grease, oil mist, and smoke particles by weight, capturing everything down to PM0.5 without filters that clog.

5000G centrifugal force for heavy grease

Our Perpetual Filtration Technology (PFT) spins air at extreme speeds, creating forces up to 5,000 g. This separates grease, oil mist, and smoke particles by weight, capturing everything down to PM0.5 without filters that clog.

5000G centrifugal force for heavy grease

Our Perpetual Filtration Technology (PFT) spins air at extreme speeds, creating forces up to 5,000 g. This separates grease, oil mist, and smoke particles by weight, capturing everything down to PM0.5 without filters that clog.

Lamella design handles peak kitchen loads

Hundreds of cone-shaped plates create 25,000 m² of separation surface. Even during peak service, grease and particles are pushed away from clean air through narrow gaps. Steady performance no matter how heavy the grease load.

Lamella design handles peak kitchen loads

Hundreds of cone-shaped plates create 25,000 m² of separation surface. Even during peak service, grease and particles are pushed away from clean air through narrow gaps. Steady performance no matter how heavy the grease load.

Lamella design handles peak kitchen loads

Hundreds of cone-shaped plates create 25,000 m² of separation surface. Even during peak service, grease and particles are pushed away from clean air through narrow gaps. Steady performance no matter how heavy the grease load.

Self-cleaning technology for 24/7 operation

CLER's cleaning process automatically rinses grease and particles from the plates using minimal liquid. No manual cleaning. No filter changes. No kitchen shutdowns. Just continuous grease-free extraction during service.

Self-cleaning technology for 24/7 operation

CLER's cleaning process automatically rinses grease and particles from the plates using minimal liquid. No manual cleaning. No filter changes. No kitchen shutdowns. Just continuous grease-free extraction during service.

Self-cleaning technology for 24/7 operation

CLER's cleaning process automatically rinses grease and particles from the plates using minimal liquid. No manual cleaning. No filter changes. No kitchen shutdowns. Just continuous grease-free extraction during service.

Customer case

Customer case

Customer case

McDonald's Gotland eliminated filter changes and duct cleaning with CLER Pro. Three months in, the system captured over 15 liters of grease that would otherwise clog ducts and filters.

15 litres

Grease captured in 3 months

"After four months, the chimney sweep said he'd never seen cleaner ducts. Our filters looked unused and needed no replacement"

Magnus, Franchisee

McDonald's Gotland

90%

Less maintenance

McDonald's Gotland eliminated filter changes and duct cleaning with CLER Pro. Three months in, the system captured over 15 liters of grease that would otherwise clog ducts and filters.

15 litres

Grease captured in 3 months

"After four months, the chimney sweep said he'd never seen cleaner ducts. Our filters looked unused and needed no replacement"

Magnus, Franchisee

McDonald's Gotland

90%

Less maintenance

McDonald's Gotland eliminated filter changes and duct cleaning with CLER Pro.

15 litres

Grease captured in 3 months

"After four months, the chimney sweep said he'd never seen cleaner ducts. Our filters looked unused and needed no replacement"

Magnus, Franchisee

McDonald's Gotland

90%

Less maintenance

Get in touch!

Whether you need technical support or want to discuss a solution for your facility, leave your details and we'll get back to you.

+46 10 168 68 68
info@clerglobal.com

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?
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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?
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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.