Clean, healthy air for your business

An air purifier generates circulation of indoor air (combination of motor and fan), senses PM2.5 and reacts to the impurities in the air and filters polluted air via a filtration system that captures particulate matter, allergens, viruses, bacteria, harmful gasses, etc. This working cycle will be repeated as indoor air is recirculated by the air flow of the air purifier; hence it is very important that the air purifier has a high airflow to clean the air constantly.

CADR – Clean Air Delivery Rate is the absolute cleaned amount of air cleaned by an air purifier in time period (often expressed in cubic feet per minute) , we measure this as the combination of airflow and filtration efficiency.

CADR helps you to understand how fast an air purifier can clean a room, higher CADR in a room will result in faster cleaning leading and/or to lower concentration of pollutants in the air

HEPA (High-Efficiency Particulate Air) filters are composed of a mat of randomly arranged fibers. HEPA filters are designed to target a range of particle sizes. These particles are trapped and stacked to the fiber. Philips Air Purifiers employ NanoProtect HEPA filters. These filters deliver 99.97% particle removal at 0.003µm. NanoProtect HEPA uses a combination of mechanical and electrostatic filtering, where mechanical action catches the bigger particles and electrostatic action is used to capture the smaller particles. This filter design enables optimum size, better air circulation, increased speed of air cleaning, lower material costs and lower energy consumption.

99.97% is normally connected with 0.3 μm as a commonly used filter specification, which is the HEPA requirement specified by some US HEPA standard. Philips air purifiers show 99.97% efficiency for even smaller particles. Our products are tested against 0.003 μm, which is the smallest particle which currently can be tested, showing high efficiency at 99.97% filtration.

• The Filter efficiency is measured by proportion of particle removal at a specified particle size. At Philips, we measure filter efficiency at a particle size of 0.3µm (assumed to be the most difficult particle size to capture) and to 0.003µm (smallest measurable particle size nowadays).

HEPA-13 / H13 is a known industry standard in air filters that follow EU standard EN1822.

Certified HEPA-13 filters are guaranteed to deliver 99.95% air purification at MPPS, as per European standard. MPPS stands for “most penetrating particle size”, in other words this is the most difficult particle size to filter in any filter (not necessarily the smallest particle size). HEPA-13 standard has however a couple of important limitations. One of them is that it doesn’t consider rate of air purification (measured by CADR as per industry standards), which is arguably much more important in every-day real-life consumer situations.

Philips NanoProtect HEPA filters provide 99.97% filter efficiency at 0.003µm. The faster the air purification rate (CADR), the better the protection against hazardous small particles, allergens and aerosols from viruses. Based on this, NanoProtect HEPA filters are expected to do a better job than conventional HEPA-13 certified filters in every-day real-life consumer situations, cleaning the air faster with a more optimum design size, lower energy consumption and lower material costs, thus lower total cost of ownership for our intended consumers.

We recommend placing the filter into a disposable bag and following the good practice to wash your hands afterwards for at least 20 seconds and follow the advice of your local health authorities for handling potentially infected surface.

A 20 seconds hand washing period would then also be included for filter cleaning step.

Philips NanoProtect HEPA filters from all air purifier ranges have an extreme high performance against allergens, particles and viruses as shown in the table below.