Covid-19 Warning





Operating principle

Operating principle

Operating principle

The effectiveness tests are carried out by the R.Reig Laboratory (Spain) in a space of 35m3.

Our solution is based on a simple system, which allows the air flow to circulate through the interior of the equipment, previously passing through filters that only retain dust and mites.

The equipment has several UV-C lamps that project the light inside an aluminum chamber. The airflow passes through the chamber, the walls of which reflect the light beam, generating enough energy to destroy or inactivate the pathogens present. After this process, the completely sterilized air is expelled.

The lamps have a special coating that captures radiation of less than 200 nm, thus preventing the formation of ozone in the air and prolonging the life of the lamps up to 18,000 hours at the same time.

Why UV-C technology ?

  Logo DesAir


Proven efficacy in elimination of viruses, bacteria and fungi ok
Optimal cost-effectiveness ok
Fast processing ok
Operation in the presence of people, animals and plants ok ok
Availability of permanent operation ok ok
Low annual maintenance cost (replacement parts) ok
Low monthly consumption ok
Easy to use (no special personnel required) ok ok
99.99% efficacy against SAR-CoV-2 ok
Long service life ok
Does not emit toxins ok ok
Easy recycling ok
Universal use (in all types of spaces) ok

ASHRAE recommendations


Banks of UV-lamps installed inside HVAC units or associated ductwork; positioned parallel or perpendicular to airflow. Requires increased dose of UV to inactivate microorganisms on-the-fly as they pass through the disinfection zone. Due to limited exposure time, installations should observe these guidelines: D-50 D5 / D7 D3 / D4 D2
Minimum target UV dose of 1,500 µW•s/cm2 (1,500 µJ/cm2) 3985 3248 1949 1206
Designed for 500 fpm or slower moving airstream 453 462 462 277
Minimum irradiance zone of 2 feet 2 2,3 2,3 2
Minimum UV exposure time of 0.25 second 0,271 0,286 0,286 0,349
Details on the UV Dose Recommendation for SARS-CoV-2: SARS-CoV-2:

logo_ashraeIt is advisable to build in appropriate safety margins to account for different environmental conditions such as air flow speeds, temperature and humidity levels, number of air changes, surface soiling, lamp ageing and system configuration, etc.

A conservative minimum UV-C (254 nm) dose value of 1,500 µJ/cm2 is therefore suggested for 99% inactivation of SARS-CoV-2 in air.

A minimum UV-C (254 nm) dose of 611 µJ/cm2 should be applied for 90% inactivation of SARS-CoV-2. This extrapolates to a dose of 1222 µJ/cm2 for 99% inactivation of SARS-CoV-2 virus in air applications.

Proven efficient technology



Proven efficient technology


Proven efficient technology


UV-C against microorganisms

At the wavelength of 253.7nm it is precisely where the necessary energy is produced to penetrate the wall that protects the genetic information of the microorganisms.UVC works by breaking down DNA / RNA, thus inactivating its ability to reproduce and infect.


UV-C light

Ultraviolet Light is an emission of electromagnetic waves whose wavelength is between 100 and 400 nm (nanometers). Precisely in the segment of the band between 200 and 280 nm, commonly known as short-wave UV (UV-C), is 253.7nm, this being the most effective as a germicidal function.

UV-C radiation is an air and object disinfectant solution that can help mitigate the risk of infection and has been widely used for over 40 years. All bacteria and viruses tested to date (many hundreds over the years, including various coronaviruses) respond to ultraviolet UV-C disinfection. A clear indication that UV radiation can play an important role in the protection strategy.

UV-C light is used for air disinfection in practically all applications, because there are always situations where microorganisms in the air can cause problems and make people sick. For example, in offices and schoolspublic transportationentertainment venues, but also in the food processing and agricultural industry. Microorganisms in the air can be easily and effectively inactivated by UV-C light.

Demonstration of its bactericidal effect

A detailed study of the effects of the UV-C electromagnetic radiation spectrum by English scientists Doyney Blount demonstrated the bactericidal effect of UV radiation in 1877. This was the historical benchmark for the successful use of this physical discovery in medicine.

Against pathogenic bacteria
In 1892 the English scientist Harry Marshall Ward showed that a part of the UV-C electromagnetic spectrum destroys pathogenic bacteria.
An important contribution was also made by Richard Koch, when in 1904 he created the first mercury quartz lamp, which served as a powerful source of bactericidal disinfection.

An important contribution was also made by Richard Koch, when in 1904 he created the first mercury quartz lamp, which served as a powerful source of bactericidal disinfection.

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