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Frequently
asked questions

Answers to anything Cler

The technology

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.

What size particles does Cler remove?
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Cler captures particles down to PM0.5, finer than most HEPA filters are rated for. The separation generates forces up to 5,000 g, which is effective even against the ultrafine particles that pass straight through conventional filter material.

How is Cler different from a HEPA filter?
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A HEPA filter traps particles in dense material. As it fills up, airflow drops and energy use rises until someone replaces it. Cler never fills up. Particles drain away continuously during operation, so performance stays consistent from day one to year twenty.

What happens to the particles that are removed?
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They drain away automatically during operation into your existing drainage system. No manual collection, no scheduled cleaning, no downtime.

Can Cler be retrofitted to existing systems?
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Yes. Cler integrates with most existing ventilation setups without structural changes to ductwork or fire suppression systems.

How long does a Cler installation take?
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Most installations are completed within one working day. Your operations run normally the same day.

Can Cler handle greasy air from kitchens and fast food environments?
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Yes. Cler is built for these environments. It separates sticky particles like oil and grease before they enter your ducts, keeping ventilation clean and reducing fire risk at the same time.

Which industries does Cler work in?
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Cler is used across commercial kitchens, commercial buildings, data centres and industrial facilities. Anywhere ventilation carries particles, grease or fine dust, Cler removes them continuously without filters or downtime.

What is the difference between Cler Pro and Cler Pro Compact?
icon

Both units use the same filter-free centrifugal separation technology and deliver the same performance. The Compact is a smaller version designed to fit tighter spaces and installations where the standard unit would not. Your site assessment will determine which is the right fit.

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.

What size particles does Cler remove?
icon

Cler captures particles down to PM0.5, finer than most HEPA filters are rated for. The separation generates forces up to 5,000 g, which is effective even against the ultrafine particles that pass straight through conventional filter material.

How is Cler different from a HEPA filter?
icon

A HEPA filter traps particles in dense material. As it fills up, airflow drops and energy use rises until someone replaces it. Cler never fills up. Particles drain away continuously during operation, so performance stays consistent from day one to year twenty.

What happens to the particles that are removed?
icon

They drain away automatically during operation into your existing drainage system. No manual collection, no scheduled cleaning, no downtime.

Can Cler be retrofitted to existing systems?
icon

Yes. Cler integrates with most existing ventilation setups without structural changes to ductwork or fire suppression systems.

How long does a Cler installation take?
icon

Most installations are completed within one working day. Your operations run normally the same day.

Can Cler handle greasy air from kitchens and fast food environments?
icon

Yes. Cler is built for these environments. It separates sticky particles like oil and grease before they enter your ducts, keeping ventilation clean and reducing fire risk at the same time.

Which industries does Cler work in?
icon

Cler is used across commercial kitchens, commercial buildings, data centres and industrial facilities. Anywhere ventilation carries particles, grease or fine dust, Cler removes them continuously without filters or downtime.

What is the difference between Cler Pro and Cler Pro Compact?
icon

Both units use the same filter-free centrifugal separation technology and deliver the same performance. The Compact is a smaller version designed to fit tighter spaces and installations where the standard unit would not. Your site assessment will determine which is the right fit.

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.

What size particles does Cler remove?
icon

Cler captures particles down to PM0.5, finer than most HEPA filters are rated for. The separation generates forces up to 5,000 g, which is effective even against the ultrafine particles that pass straight through conventional filter material.

How is Cler different from a HEPA filter?
icon

A HEPA filter traps particles in dense material. As it fills up, airflow drops and energy use rises until someone replaces it. Cler never fills up. Particles drain away continuously during operation, so performance stays consistent from day one to year twenty.

What happens to the particles that are removed?
icon

They drain away automatically during operation into your existing drainage system. No manual collection, no scheduled cleaning, no downtime.

Can Cler be retrofitted to existing systems?
icon

Yes. Cler integrates with most existing ventilation setups without structural changes to ductwork or fire suppression systems.

How long does a Cler installation take?
icon

Most installations are completed within one working day. Your operations run normally the same day.

Can Cler handle greasy air from kitchens and fast food environments?
icon

Yes. Cler is built for these environments. It separates sticky particles like oil and grease before they enter your ducts, keeping ventilation clean and reducing fire risk at the same time.

Which industries does Cler work in?
icon

Cler is used across commercial kitchens, commercial buildings, data centres and industrial facilities. Anywhere ventilation carries particles, grease or fine dust, Cler removes them continuously without filters or downtime.

What is the difference between Cler Pro and Cler Pro Compact?
icon

Both units use the same filter-free centrifugal separation technology and deliver the same performance. The Compact is a smaller version designed to fit tighter spaces and installations where the standard unit would not. Your site assessment will determine which is the right fit.

cler-rotor

Maintenance & costs

Do I need to replace any parts?
icon

No. Cler is entirely filter-free and self-cleaning. There are no consumables, no recurring parts to order and no maintenance schedules to keep.

How often does Cler need service?
icon

Cler monitors itself continuously, so most buildings only need an annual inspection. Compare that to monthly or quarterly filter replacements with conventional systems.

Is Cler more expensive than traditional filtration systems?
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The initial investment is comparable to traditional systems. The difference shows over time: no filter purchases, no maintenance callouts, lower energy consumption. Operating costs are significantly lower from year one.

How much can a business typically save by switching to Cler?
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Most customers save between €8,000 and €24,000 per year, depending on building size and current setup. Use our savings calculator for a site-specific estimate.

What happens if something goes wrong?
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Every unit monitors air quality, pressure, power and temperature around the clock. If something is off, you receive an alert before it becomes a problem. All units are covered by a 20-year service plan.

Do I need to replace any parts?
icon

No. Cler is entirely filter-free and self-cleaning. There are no consumables, no recurring parts to order and no maintenance schedules to keep.

How often does Cler need service?
icon

Cler monitors itself continuously, so most buildings only need an annual inspection. Compare that to monthly or quarterly filter replacements with conventional systems.

Is Cler more expensive than traditional filtration systems?
icon

The initial investment is comparable to traditional systems. The difference shows over time: no filter purchases, no maintenance callouts, lower energy consumption. Operating costs are significantly lower from year one.

How much can a business typically save by switching to Cler?
icon

Most customers save between €8,000 and €24,000 per year, depending on building size and current setup. Use our savings calculator for a site-specific estimate.

What happens if something goes wrong?
icon

Every unit monitors air quality, pressure, power and temperature around the clock. If something is off, you receive an alert before it becomes a problem. All units are covered by a 20-year service plan.

Do I need to replace any parts?
icon

No. Cler is entirely filter-free and self-cleaning. There are no consumables, no recurring parts to order and no maintenance schedules to keep.

How often does Cler need service?
icon

Cler monitors itself continuously, so most buildings only need an annual inspection. Compare that to monthly or quarterly filter replacements with conventional systems.

Is Cler more expensive than traditional filtration systems?
icon

The initial investment is comparable to traditional systems. The difference shows over time: no filter purchases, no maintenance callouts, lower energy consumption. Operating costs are significantly lower from year one.

How much can a business typically save by switching to Cler?
icon

Most customers save between €8,000 and €24,000 per year, depending on building size and current setup. Use our savings calculator for a site-specific estimate.

What happens if something goes wrong?
icon

Every unit monitors air quality, pressure, power and temperature around the clock. If something is off, you receive an alert before it becomes a problem. All units are covered by a 20-year service plan.

Sustainability

How sustainable is Cler?
icon

Cler eliminates the need for disposable filters entirely, removing the waste and CO₂ emissions that come with manufacturing, transporting and disposing of them. It is a long-term solution designed to run for decades without consumables.

Can Cler handle greasy air from kitchens and fast food environments?
icon

Yes. Cler is built for exactly these environments. It separates sticky particles like oil and grease before they enter your ducts, keeping ventilation clean and reducing fire risk at the same time.

How does Cler affect energy consumption?
icon

Unlike conventional filters, Cler maintains a consistently low pressure drop throughout its lifetime. Energy use stays stable from day one. The clean air can be recirculated back into occupied spaces, retaining warmth from exhaust air and reducing heating costs.

How sustainable is Cler?
icon

Cler eliminates the need for disposable filters entirely, removing the waste and CO₂ emissions that come with manufacturing, transporting and disposing of them. It is a long-term solution designed to run for decades without consumables.

Can Cler handle greasy air from kitchens and fast food environments?
icon

Yes. Cler is built for exactly these environments. It separates sticky particles like oil and grease before they enter your ducts, keeping ventilation clean and reducing fire risk at the same time.

How does Cler affect energy consumption?
icon

Unlike conventional filters, Cler maintains a consistently low pressure drop throughout its lifetime. Energy use stays stable from day one. The clean air can be recirculated back into occupied spaces, retaining warmth from exhaust air and reducing heating costs.

How sustainable is Cler?
icon

Cler eliminates the need for disposable filters entirely, removing the waste and CO₂ emissions that come with manufacturing, transporting and disposing of them. It is a long-term solution designed to run for decades without consumables.

Can Cler handle greasy air from kitchens and fast food environments?
icon

Yes. Cler is built for exactly these environments. It separates sticky particles like oil and grease before they enter your ducts, keeping ventilation clean and reducing fire risk at the same time.

How does Cler affect energy consumption?
icon

Unlike conventional filters, Cler maintains a consistently low pressure drop throughout its lifetime. Energy use stays stable from day one. The clean air can be recirculated back into occupied spaces, retaining warmth from exhaust air and reducing heating costs.

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Cler is cleaner

Cler is cleaner

Cler is cleaner