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Clean the air coming in—keep odors, germs, and allergens out

UV-C technology for hygienic fresh air from controlled residential ventilation

Controlled residential ventilation (CRV) brings outside air into the house—but also pollen, fine dust, odors, germs, and mold spores. Conventional filters quickly reach their limits: they become clogged, require intensive maintenance, and often do not reliably retain microorganisms.

With UV-C solutions from oxytec, the supply air is sterilized and deodorized directly at the source—efficiently, chemically free, and without ozone. This turns every ventilation solution into a contribution to health.

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Typical challenges in supply air purification

Problem area Typical stresses Consequences
Outdoor air intake Pollen, fungal spores, odors, germs Contaminated indoor air despite fresh air supply
Filters (G4, F7, F9, etc.) Biological deposits, odors Biofilm, odor breakthrough, maintenance requirements
Damp areas in the system Germ formation, mold growth Contamination of the air ducts
Combined recirculation/fresh air systems Cross-contamination through recirculated air Health hazard, potential for infection

Why Oxytec for the supply air?

UV-C technology eliminates up to 99.999% of germs, mold, and viruses
Odor molecules are neutralized by photolysis
Systems without ozone formation – safe for living areas
Efficient even at low air speeds
Low maintenance, space-saving, can be integrated into new and existing buildings

Legal requirements

VDI 6022 – Hygiene in ventilation systems

  • Requires verifiable hygiene assurance for fresh air supply
  • UV-C is considered an approved method for disinfection

DIN 1946-6 – Ventilation of residential buildings

  • Supply air must not pose a risk to indoor air quality
  • Mold prevention, odor avoidance, and sterility are essential

Fresh air is not necessarily clean air.
Oxytec ensures that your supply air is truly healthy.

Get advice now – cleverly integrated supply air sterilization.

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  • Breaks down odor molecules from industry, agriculture, and the environment
  • Prevents olfactory pollution indoors
  • Even with fresh air supply in urban areas or industrial parks

UV Box

  • Suitable for central ventilation systems, KWL devices, air purifiers
  • Quiet operation, energy-efficient, no loss of air pressure
  • Compatible with heat recovery systems

Typical areas of application

  • Single-family homes with controlled ventilation or central ventilation
  • Apartment buildings, residential complexes, retirement homes
  • Kindergartens, schools, law offices, doctors’ offices
  • Living spaces in industrial environments or areas with heavy traffic

Your advantages with oxytec supply air purification

Odorless, germ-free fresh air—even with outdoor pollution
No filter changes, no maintenance backlog, no biofilm
Compatible with any KWL or ventilation system
Promotes health, well-being, and building value
Ideal for sensitive user groups (children, allergy sufferers, seniors)

FAQ – Frequently Asked Questions

Why should outdoor air be additionally sterilized before entering the building?

Because despite filtration, germs, mold spores, bacteria, viruses, and odor molecules can still be present in the outside air.
Filters alone are often not enough, especially in areas with high humidity, pollen levels, or in urban areas with industrial emissions.
UV-C solutions in the supply air duct reliably eliminate these pollutants—right at the source.

What are the advantages of UV-C over conventional filters in supply air?

UV-C destroys germs and microorganisms directly, rather than just mechanically retaining them.
This prevents biofilm, filter contamination, and odor breakthrough.
UV-C works regardless of particle size and humidity—even with organic odors, e.g., from manure, industry, or exhaust gases.

How is UV-C technology installed in the supply air?

UV-C modules are usually installed:

  • Installed directly in the supply air duct, ideally before the heat exchanger or filter
  • Can also be retrofitted to existing systems
  • Combined with odor neutralization via photolysis on request

The systems are low-maintenance, compact, and can be adjusted to the air velocity.

What standards apply to hygiene in the supply air?
  • VDI 6022 requires hygienically impeccable supply air
  • DIN 1946-6 requires ventilation design without health risks
  • EN 16798-1 defines quality standards for indoor air – including with outdoor air content

UV-C systems enable you to meet these requirements in a legally compliant and energy-efficient manner.

How safe is UV-C technology in air ducts?

The UV-C sources used are:

  • Ozone-free
  • Radiation-proof encapsulation
  • Safe for continuous operation in sensitive areas (homes, medical practices, daycare centers)

There is no direct contact with UV light; the systems are tested and approved.

What maintenance is required?

Minimum:

  • Light bulb replacement approx. every 9,000 hours
  • Visual inspection during ventilation system maintenance
  • No filter replacement or cleaning cycles necessary

This reduces follow-up costs and keeps the system hygienically stable.

Is the system also suitable for small KWL devices in single-family homes?

Yes. Oxytec offers mini UV modules for:

  • Compact ventilation units
  • Wall or ceiling units
  • Decentralized solutions

Scalable systems are also available for larger systems (e.g., apartment buildings, clinics, schools).