
Frequently
asked questions
Answers to anything Cler
The technology
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.
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.
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.
They drain away automatically during operation into your existing drainage system. No manual collection, no scheduled cleaning, no downtime.
Yes. Cler integrates with most existing ventilation setups without structural changes to ductwork or fire suppression systems.
Most installations are completed within one working day. Your operations run normally the same day.
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.
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.
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.
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.
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.
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.
They drain away automatically during operation into your existing drainage system. No manual collection, no scheduled cleaning, no downtime.
Yes. Cler integrates with most existing ventilation setups without structural changes to ductwork or fire suppression systems.
Most installations are completed within one working day. Your operations run normally the same day.
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.
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.
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.
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.
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.
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.
They drain away automatically during operation into your existing drainage system. No manual collection, no scheduled cleaning, no downtime.
Yes. Cler integrates with most existing ventilation setups without structural changes to ductwork or fire suppression systems.
Most installations are completed within one working day. Your operations run normally the same day.
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.
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.
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.

Maintenance & costs
No. Cler is entirely filter-free and self-cleaning. There are no consumables, no recurring parts to order and no maintenance schedules to keep.
Cler monitors itself continuously, so most buildings only need an annual inspection. Compare that to monthly or quarterly filter replacements with conventional systems.
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.
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.
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.
No. Cler is entirely filter-free and self-cleaning. There are no consumables, no recurring parts to order and no maintenance schedules to keep.
Cler monitors itself continuously, so most buildings only need an annual inspection. Compare that to monthly or quarterly filter replacements with conventional systems.
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.
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.
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.
No. Cler is entirely filter-free and self-cleaning. There are no consumables, no recurring parts to order and no maintenance schedules to keep.
Cler monitors itself continuously, so most buildings only need an annual inspection. Compare that to monthly or quarterly filter replacements with conventional systems.
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.
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.
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
