DP Air Purifier

How is dp different from a portable air purifier?

dp is ceiling-mounted, drawing air above the occupied zone and distributing clean air at 360° across the full room width. Portable floor-standing units create localised airflow near the device only, leaving large areas of the room inadequately cleaned. This fundamental positional difference results in more homogeneous particle reduction at breathing height, as validated by independent research at TU Berlin and in real clinical environments.

Which dp system is right for my room?

Correct sizing depends on room volume (m³) and the required air changes per hour (ACH) for your application — not floor area alone. As a general direction: dp Pro is suited to rooms up to approximately 40 m² depending on room height and target ACH; dp Industrial for rooms up to approximately 80 m². Use the sizing tool above or contact us for a personalised recommendation.

What filter technology is used?

dp uses HEPA H14 filtration — the highest standard HEPA filter classification — which retains ≥99.995% of particles at the most penetrating particle size (MPPS, 0.3 µm). Depending on the application, an activated carbon stage for odour and VOC reduction can be added. UV-C irradiation acts on the filter surface inside the closed device as an additional hygiene stage.

How often do filters need to be replaced?

Timely filter replacement is a critical operational requirement — confirmed by clinical study findings which noted that filter maintenance directly impacts sustained performance. Replacement intervals depend on usage intensity, environmental particle load, and operating hours. We recommend a scheduled maintenance plan appropriate to the specific installation environment.

Is sizing based on room area or room volume?

Sizing should always be based on room volume (m³) combined with the target number of air changes per hour (ACH) for the application type. Room area alone is not a sufficient basis because ceiling height significantly affects the total air volume to be treated. For example, a 40 m² room at 3.0 m ceiling height requires 120 m³ per air change — meaningfully different from the same area at 2.5 m height.

Can dp be used in healthcare or education settings?

Yes. dp has been independently measured in active clinical environments, including a hospital setting in New Delhi where 99.967% particle removal was confirmed at 0.3 µm. Both healthcare and education installations are well-documented application contexts. The dp Industrial model meets the requirements of VDI-EE 4300 Sheet 14.

Does the system include activated carbon?

Activated carbon filtration for odour and VOC reduction is available as an optional stage depending on application and model specification. It is particularly relevant where chemical compounds, cooking odours, or volatile organic compounds are a concern alongside particle filtration. Contact us to discuss which configuration suits your specific environment.

What role does UV-C play inside the device?

UV-C irradiation inside dp acts directly on the surface of the HEPA H14 filter within the closed device housing. Its function is to provide an additional hygiene stage — neutralising biological contaminants captured at the filter surface. The UV-C system operates exclusively within the sealed device and does not irradiate room air or occupants.