About us

CLER's history.

CLER's history.

CLER's products are built on over 20 years of centrifugal separation expertise from Alfa Laval, a company with 150+ years of experience in liquid separation. Their research teams had perfected how centrifugal forces can filter tiny liquid droplets from air, such as those in diesel engine crankcase ventilation.

R&D and Innovation Directors from Alfa Laval advanced the technology further, developing it to remove not just liquids, but also dry airborne particles like viruses, bacteria, and dust. That evolution became CLER.

Since 2021, we've operated full-time with one clear mission: democratise access to clean indoor air.

CLER's products are built on over 20 years of centrifugal separation expertise from Alfa Laval, a company with 150+ years of experience in liquid separation. Their research teams had perfected how centrifugal forces can filter tiny liquid droplets from air, such as those in diesel engine crankcase ventilation.

R&D and Innovation Directors from Alfa Laval advanced the technology further —developing it to remove not just liquids, but also dry airborne particles like viruses, bacteria, and dust. That evolution became CLER.

Since 2021, we've operated full-time with one clear mission: democratize access to clean indoor air.

Join us in making clean air standard.

Work at CLER

Join us in making clean air standard.

Career at CLER

Join us in making clean air standard.

Work at CLER

Join us in making clean air standard.

Work at CLER

Join us in making clean air standard.

Work at CLER

Join us in making clean air standard.

Work at CLER

Our mission.

CLER is a Swedish deep-tech company pioneering a new era in air purification with our proprietary Perpetual Filtration Technology (PFT). Our mission: eliminate the world's reliance on disposable air filters by delivering a maintenance-free, energy-efficient, and sustainable solution for even the most demanding environments.

We aim to set a new global standard for air filtration. Not just by supplying products, but by redefining how the world cleans its air.

Less waste. Lower CO₂ emissions. Cleaner air for everyone.

CLER's technology.

Our mission

Current filtration technologies can't meet this challenge. High-grade filters consume massive energy, require frequent replacement, and remain costly. According to WHO, less than 10% of indoor environments globally meet recommended air quality guidelines.

CLER's patented centrifugal separation technology solves this. We deliver clean indoor air to everyone, not just those who can afford premium solutions.

Our PFT combines high centrifugal forces, unique lamella disc design, and patented self-cleaning. Continuous filtration down to PM0.5. No consumables. No manual handling. Ultra-clean air at lower cost with zero waste and zero downtime.

CLER is a Swedish deep-tech company pioneering a new era in air purification with our proprietary Perpetual Filtration Technology (PFT). Our mission: eliminate the world's reliance on disposable air filters by delivering a maintenance-free, energy-efficient, and sustainable solution for even the most demanding environments.

We aim to set a new global standard for air filtration. Not just by supplying products, but by redefining how the world cleans its air.

Less waste. Lower CO₂ emissions. Cleaner air for everyone.

Learn more

Learn more

CLER's technology

Current filtration technologies can't meet this challenge. High-grade filters consume massive energy, require frequent replacement, and remain costly. According to WHO, less than 10% of indoor environments globally meet recommended air quality guidelines.

CLER's patented centrifugal separation technology solves this. We deliver clean indoor air to everyone, not just those who can afford premium solutions.

Our PFT combines high centrifugal forces, unique lamella disc design, and patented self-cleaning. Continuous filtration down to PM0.5. No consumables. No manual handling. Ultra-clean air at lower cost with zero waste and zero downtime.

Learn more

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

Or leave your details, and we'll get in touch.