German flag DE
English flag EN
DP Purifier Logo New
Order Now
Designed & Engineered in Germany

Where German precision
meets clean indoor air

dp rexo is a ceiling-mounted air purification system that combines HEPA H14 and HEPA H10 filtration with refined architectural lighting — drawing air from above and distributing filtered air evenly back into the occupied zone.

HEPA H14 Filtration
Ceiling-Mounted
360° Air Distribution
UV-C Hygiene Stage
Engineered in Germany
Hospital-Tested
HEPA H14 Filtration
Ceiling-Mounted
360° Air Distribution
UV-C Hygiene Stage
Engineered in Germany
Hospital-Tested
The Problem Indoor space showing air quality challenge
dp ceiling-mounted uniform distribution vs floor unit localised airflow
Ceiling-mounted: uniform distribution vs. floor unit: localised airflow
The Challenge

Indoor air is more complex than it appears

In occupied spaces, fine particles, aerosols, pollen, dust and particle-bound biological contaminants can remain suspended in the air for long periods. The challenge is not filtration alone - it is how evenly clean air reaches the zone where people breathe.

01
Uneven air cleaning Conventional floor-standing units can create strong local airflows near the device, while other areas of the occupied zone receive less effective air cleaning.
02
Particle accumulation at breathing height Fine particles, aerosols, pollen and dust are often present in the breathing zone. Without effective air distribution, they can remain suspended and circulate within the room.
03
Filtration rate alone does not define air quality A unit with excellent filter efficiency but poor air distribution may not provide uniform clean air across the full occupied zone of a room.
Ceiling-Mounted Air Purification

Cleaner indoor air where people actually breathe

Ceiling-mounted HEPA H14 and HEPA H10filtration with 360° air distribution and integrated lighting — designed for uniform air cleaning, practical room integration and reliable filtration performance in demanding environments.

Request Consultation See How It Works

Airflow analysis by TU Berlin / Hermann-Rietschel-Institut

Supported by airflow analysis under research conditions - not by laboratory filter performance alone.

Why Ceiling-Mounted

A fundamentally different approach to air distribution

The installation position of an air purifier determines how air actually reaches people. dp is engineered to draw air from above the occupied zone and return clean air across the full room width — without consuming floor space or disrupting the room.

Floor-standing portable unit
Conventional Approach Floor-standing portable units
✕ Occupies floor space and disrupts room flow
✕ Localised airflow — limited distribution radius
✕ Visible and difficult to integrate architecturally
✕ Draws air at floor level, not breathing height
✕ Creates dead zones in larger rooms
vs
dp ceiling-mounted system
dp rexo Approach Ceiling-mounted recirculating system
✓ No floor space required — zero room disruption
✓ 360° radial distribution at breathing height
✓ Integrates cleanly into architecture and interior
✓ Positioned above aerosol generation zone
✓ More homogeneous particle reduction across the room
Technology

How dp rexo works

Each dp rexo unit combines proven filtration stages with carefully engineered airflow geometry. The result is consistent particle reduction across the entire occupied zone.

360° Air Intake 01
360° Air Intake
Air is drawn horizontally at ceiling level, above the occupied zone and the primary aerosol generation area.
HEPA H14 Filtration 02
HEPA H14 Filtration
All air passes through a medical-grade HEPA H14 filter, retaining ≥99.995% of particles at MPPS (0.3 µm), including aerosols, fine dust, pollen, and biological contaminants.
UV-C Hygiene Stage 03
UV-C Hygiene Stage
UV-C irradiation acts directly on the HEPA H14 filter surface inside the closed device to neutralise residual biological contamination at the filter layer — not in room air.
Uniform Air Return 04
Uniform Air Return
Cleaned air is distributed radially at 360° back into the room, ensuring even coverage at breathing height across the full occupied floor area.
Filter Class HEPA H14 — retains ≥99.995% at Most Penetrating Particle Size
Optional Stage Activated carbon for odour and Volatile Organic Compounds reduction
Sizing Basis Room volume (m³) × target air changes per hour
Integrated Lighting Multi-band LED, selectable 2700–6000 K
Air Distribution 360° radial, ceiling intake, breathing-height return
Maintenance Timely filter replacement essential for sustained performance
Proven Performance

Measured in real-world

environments

dp performance is supported by field measurements in operational healthcare environments and airflow analysis by TU Berlin / Hermann-Rietschel-Institut.

Trust seal — certified air purification performance
Field Study · New Delhi
Max Hospital
Measurements
Particle reduction in incense (smoke stress test)99.967%
Particle size measured0.3 µm
Significant reduction within20 min
Measurements were conducted in an active clinical environment under operational conditions.
Clinical Study · Iran
Hospital
Clinical Findings
Particle reduction at 0.5 µm98.2%
Microbiological findingsReduced
Filter maintenanceEssential
Hospital findings reported reduced microbial burden in isolation-room measurements and no microbial/fungal growth in operating-room samples. Timely filter replacement is essential for sustained performance.
Research · TU Berlin / HRI
Hermann-Rietschel-Institut
Airflow Analysis
Distribution qualityHomogeneous
vs. floor-standing unitsUniform Coverage
Breathing-zone coverageOptimized
TU Berlin / HRI airflow analysis shows that ceiling-mounted distribution delivers more uniform air cleaning in the occupied breathing zone than a portable floor unit under the tested conditions.
Comparative particle reduction - selected dp field measurements
dp · 0.3 µm (Max Hospital, incense smoke stress test)
99.967%
dp · 0.5 µm (Iran hospital measurement)
98.2%

*Performance of portable floor-standing units varies significantly by placement, room size, airflow pattern, occupancy and operating conditions. dp ceiling-mounted systems are designed to support more homogeneous occupied-zone distribution.

Product Range

Purification that matches your lifestyle
A new standard in indoor air purification

Correct sizing is based on room Correct sizing is based on room volume and target air changes per hour - not room area alone. Both dp models deliver ceiling-mounted HEPA H14 and HEPA H10 filtration with 360° air distribution.

Professional Series dp Pro
Ø 445 mm
H 227 mm
dp Pro Professional ceiling-mounted air purification with integrated LED lighting. Suitable for selected residential spaces up to approx. 75 m², depending on ceiling height, usage and target ACH. For offices, classrooms and higher-occupancy spaces, approx. 40 m² is recommended as a practical planning reference.
Especially suitable for homes, bedrooms and allergy-sensitive environments during pollen season.
Max Air Flow 550 m³/h / 550,000 L/h
Weight 12 kg
Voltage 220–240 V
Power A+++ · Max 150 W
Filter Class HEPA 14 + H 10 + carbon
Filter Life ~2,200 working hrs
UV-C Wavelength 270–280 nm
Sound Pressure 40–65 dB
Light Colour 2000–6000 K
Remote Control Up to 100 devices
CE Certified HRI Airflow Analysis TU Berlin/HRI Analysed
Request information →
Industrial Grade dp Industrial
640 × 540 mm
H 227 mm
dp Industrial High-capacity ceiling-mounted air purification for larger commercial spaces, with final sizing based on room volume, occupancy and target air changes per hour. Programme-controlled network of up to 100 devices.
Max Air Flow 1,500 m³/h / 1,500,000 L/h
Weight 20 kg
Voltage 220–240 V
Power A+++ · Max 150 W
Filter Class HEPA 14 + H 10 + carbon
Filter Life ~4,200 working hrs
UV-C Wavelength 270–280 nm
Sound Pressure 40–65 dB
Filtration Efficiency HEPA H14 according to EN 1822
Remote Control Up to 100 devices
CE Certified HRI Airflow Analysis TU Berlin/HRI Analysed
Request information →

Find the right dp system for your room

Enter your room parameters to receive a product direction. Correct sizing depends on room volume and target air changes per hour — not floor area alone.

Recommended product —
Recommended System

—

—

Request information about this model →

App Controlled. Effortlessly refined.

Advanced air purification, seamlessly controlled through the DP-Purifier App.

Power On/Off

One tap is all it takes to start breathing better.

Adjust settings to match your room, comfort and usage needs.

Smart control options help manage purification performance with ease.

Applications

Where dp performs

Selected environments where ceiling-mounted air purification provides measurable benefit over conventional solutions.

Homes & Living Spaces
Homes & Living Spaces
Recommended: dp pro
Offices & Meeting Rooms
Offices & Meeting Rooms
Recommended: dp Pro or dp Industrial
Clinics & Healthcare
Clinics & Healthcare
Recommended: dp Pro or dp Industrial
Schools & Education
Schools & Education
Recommended: dp Pro or dp Industrial
Hospitality & Waiting Areas
Hospitality & Waiting Areas
Recommended: dp Pro oder dp Industrial
High-Traffic Commercial
High-Traffic Commercial
Recommended: dp Industrial
Customer Stories

Real people, real results

Watch our customers share their experience with dp rexo ceiling-mounted air purification — in their own spaces, in their own words.

Everything you need to know before choosing a dp purifier

DP Purifier Logo New

Still have questions?

Contact our air quality experts

Contact us now

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.

Can dp help with pollen, dust and odours? + -

Yes. dp uses HEPA H14 and HEPA H10 filtration to help reduce airborne pollen, dust, fine particles and aerosols. The activated carbon stage supports odour reduction and selected VOC reduction, depending on the application and operating conditions. This makes dp especially relevant for allergy-sensitive living spaces, bedrooms and indoor environments during pollen season.

Office
Office
Office
Office
DP Pro
DP Pro
School
School
Living Room
Living Room
DP Pro
DP Pro
School
School
School
School
DP Pro
DP Pro
Reception Area
Reception Area
Bedroom
Bedroom
Classroom
Classroom
DP Pro
DP Pro
School
School
Living Room
Living Room
Workplace
Workplace
Office
Office
Classroom
Classroom
Bedroom
Bedroom
Grocery Store
Grocery Store
Hospital
Hospital
Retail Store
Retail Store
Commercial
Commercial
Hospital Room
Hospital Room
Hospital Room
Hospital Room
Get in Touch
Request a consultation dp is a technically specific solution. We recommend a short consultation to identify the right configuration for your space, usage context, and performance requirements.
  • Personalised sizing recommendation based on room volume and target ACH
  • Product direction matched to your application and environment
  • Clear, no-obligation project advice for single and multi-space installations
  • Support for specification documents upon request