Molekule’s Patented PECO Technology

Molekule’s proprietary technology, Photo Electrochemical Oxidation (PECO), works at the molecular level to destroy pollutants. Take a deep breath and see what makes Molekule air purifiers the first of their kind.

Science at the nanoscale

Developed over two decades by research scientists, PECO is an innovative technology that utilizes free radicals—the same radicals used to destroy cancer cells—to break down pollutants at a molecular level, including VOCs, bacteria, mold, viruses, and allergens. By using nanotechnology, PECO is able to destroy pollutants 1000 times smaller than what traditional HEPA technology was designed to trap.

  • Free Radical (OH)
  • Oxygen (O2)
  • Virus (C,O,H,N)
  • Carbon Dioxide (CO2)
  • Water (H2O)
  • Trace Elements (N2, etc)

The path to clean air.


PECO destroys pollutants. HEPA simply collects them.

HEPA simulation

Mold and bacteria can live and grow on HEPA filters. PECO destroys them.

Pollutants trapped on HEPA filters can grow and be released back into the air you breathe. PECO destroys bacteria, mold, and other pollutants such as allergens, ozone, and VOCs.

HEPA simulation

HEPA technology isn't designed to remove the smallest pollutants, like VOCs. PECO destroys VOCs.

Many harmful pollutants are under the 0.3-micron HEPA standard and are too small for HEPA filters to capture. PECO technology was designed to destroy even tiny pollutants, including VOCs.

Under the microscope

Unlike HEPA technology, PECO can eliminate pollutants at a microscopic scale (including VOCs and viruses). With no ozone byproduct, Molekule air purifiers safely destroy a vast range of indoor air pollutants. As a science company, Molekule conducts extensive testing of its technology through its own labs as well as certified third-party laboratories.

Before Molekule

Black mold captured on the surface of the Molekule PECO-Filter before being broken down.


Black mold in the process of being oxidized (broken down).


Black mold is oxidized and eliminated.

PECO: the clear winner against HEPA

Mold destruction

Mold spreads through the air and finds surfaces to grow on. While HEPA technology can catch mold, its filters also can become places for mold growth. Eventually, this mold can escape back into the air. Because of Molekule’s breakthrough PECO purification process, mold is destroyed in the air as it passes through the device.

White Papers & Technology Reports

Molekule believes in scientific disclosure. That’s why we make our testing and scientific data public.

The whole-home answer for pure air

  • Whisper quiet

    Sleep easy. Our air purifiers are made for even the lightest snoozers.

  • Ozone-free

    Not only do our air purifiers not emit ozone, they destroy it.

  • Filter auto-refills

    Filters ship automatically to your door when you need them. We cover shipping.

  • Free 30-day returns

    Don’t love it? Return it within 30 days for a refund—including shipping.