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Exhaust air purification for reheating kitchens

Clean air – even when cooking occasionally

In many canteens, kiosks, staff rooms, or school cafeterias, food is not cooked every day, but only reheated, regenerated, or portioned. Nevertheless, grease, odors, and pollutants are produced that do not belong in the indoor air – especially in buildings without exhaust air ducts to the roof.

Oxytec offers semi-professional air purification solutions: space-saving, low-noise, and low-maintenance, perfect for small to medium-sized reheating kitchens with limited ventilation technology.

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Typical emission sources in reheating kitchens

Source Pollutants Special features
Combi steamer, microwave Steam, odors, protein compounds Short operating time, but high load at certain times
Deep fryer (occasional) Oil vapors, aerosols High odor intensity even with short use
Hot plates, warming trolleys Grease, VOCs, smoke Decentralized, often without direct detection

Why choose Oxytec for warming kitchens?

Compact air purification in hood or duct – no technical room required

Odorless without activated carbon or exhaust air duct to the roof

Ideal for irregular operation with low air volume

Quiet, unobtrusive, approvable

Systems with UV ozone or plasma – can be combined as required

Legal requirements

VDI 2052 / VDI 3894 / TA Luft

  • Even during occasional operation, odors and grease must be effectively removed
  • Exhaust air must not be allowed to enter other rooms or the outside area
  • Our systems are proven to be effective and meet these requirements

Approval and fire protection

  • No open flames, no thermal combustion → safe
  • Stainless steel housing, hygienic and easy to clean
  • Suitable for all building classes and kitchen types

Ideal for infrequent use – ready when you’re ready to cook

Even if cooking is rarely done, the air in the room, users, and products should be protected.
With oxytec, reheating kitchens remain hygienic, odor-free, and compliant with regulations—even without roof ducting or major effort.

Get advice now—we will find the right solution for your kitchen.

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oxytec technologies for warming kitchens

Semi-professional hoods with UV ozone or plasma

Integrated air purification for small to medium-sized cooking zones

No external filter replacement – low maintenance

Grease, odors, and VOCs are neutralized directly in the hood

Low-noise technology – ideal for break rooms, schools, and offices

Compact ozone modules for retrofitting

  • Can be retrofitted into existing ventilation ducts
  • Suitable for rarely used kitchens or warming areas
  • Automatic activation during operation (e.g., with temperature sensor)
  • No continuous air movement required – saves energy

Plasma systems for odor-intensive applications

  • Ideal for occasional use of deep fryers or roasters
  • No exhaust vent required
  • Odorless exhaust possible – even at room level or on the facade

Typical areas of application

  • Reheating kitchens in schools, kindergartens, care facilities
  • Canteens in government agencies, offices, small businesses
  • Catering stations with regenerative food preparation
  • Kiosks, social rooms, club restaurants
  • Kitchens with limited air volume and no exhaust air shaft

Your advantages with oxytec

  • Clean air without large ventilation systems
  • Odor neutralization even during occasional operation
  • Compact hood or duct modules with UV ozone or plasma
  • No exhaust air chimney or technical room required
  • Low maintenance, quiet, and eligible for approval

FAQ – Frequently Asked Questions

Why is exhaust air purification necessary even when cooking only occasionally?

Even short or irregular cooking processes generate grease, odors, and pollutants (VOCs) that:

  • penetrate into neighboring rooms or hallways,
  • deposit on walls, ceilings, and appliances,
  • and cause odor problems or hygiene issues in the long term.

Oxytec systems prevent this without requiring significant technical effort.

What distinguishes semi-professional hoods from standard solutions?

Semi-professional hoods from oxytec:

  • integrate UV ozone or plasma technology directly into the hood,
  • do not require a separate exhaust air duct to the roof,
  • are optimized for small air volumes and compact spaces,
  • operate quietly and energy-efficiently,
  • and can also be installed in simple warming kitchens or break rooms.

How is the air purified?

Oxytec systems use:

  • UV ozone to break down organic odor molecules and grease mist
  • Plasma technology to oxidize VOCs and aerosols
  • No thermal combustion, no activated carbon – permanently effective and low maintenance

Are there any funding programs available?

In many cases, yes, e.g.:

  • BAFA funding for energy-efficient ventilation systems
  • Municipal programs for schools and educational institutions
  • State subsidies for hygiene measures

We provide support with evidence and documentation.

How loud are the systems during operation?

The semi-professional systems are:

  • designed to be particularly quiet,
  • without loud fans or burners,
  • ideal for rooms where people are present, e.g., offices, schools, or care facilities.

How much maintenance is required?

Very low:

  • UV lamps: generally replace once a year
  • Plasma modules: only occasional visual inspection, no wear parts
  • Filters (if integrated): clean or replace as needed
  • No activated carbon, no expensive consumables

Are there any requirements for the approval of such systems?

oxytec systems are:

  • Approved in accordance with VDI 2052 and TA Luft,
  • available with proof of effectiveness and technical documentation,
  • and comply with hygiene, air quality, and fire safety requirements.

For simple reheating kitchens, they are generally not subject to approval or are easy to test.

How much space is required for the technology?

Very low:

  • Hood systems do not require an external technical room
  • Ducted units can be integrated into false ceilings or wall ducts
  • Can also be retrofitted for compact kitchens or existing installations

For which facilities are the systems particularly suitable?

Canteens in schools, daycare centers, or nursing homes

Staff rooms, office kitchens, club restaurants

Kiosks, school kitchens, temporary sales stands

Kitchen areas with regenerative food preparation