IAQ - Annual Simplified Assessment (ASA)

Did you know that all commercial and service buildings in operation are subject to requirements related to indoor air quality and compliance with protection thresholds?

The Annual Simplified Assessment (ASA) is the procedure required by the applicable legislation in force, which determines that the following parameters must be assessed annually:

- Particulate Matter (PM10 and PM2.5 fractions);

- Carbon dioxide (CO2);

- Relative humidity;

- Temperature.

The Annual Simplified Assessment (ASA) must be carried out by the owners of the following buildings:

- ‘GES’ (Large Commercial and Services Building): commercial and services buildings with a useful floor area equal to or greater than 1,000 m2 or equal to or greater than 500 m2 in the case of shopping complexes, hypermarkets and supermarkets;

- Commercial and service buildings that include crèches, pre-school and primary school establishments and residential facilities for the elderly.

Find out more and ask us for a quote at This email address is being protected from spambots. You need JavaScript enabled to view it. or by calling (+351) 213 504 540.

Radon monitoring

Did you know that since 2022 radon has been included in the IAQ (Indoor Air Quality) and in the scope of voluntary inspection or assessment for all workplaces throughout Portugal?

Radon is a naturally occurring radioactive gas that has no colour or smell. Radon inhalation is the largest source of exposure to ionising radiation in the population, contributing more than 40% to the effective dose.

Prolonged exposure to radon inside buildings is one of the main causes of lung cancer. Smokers and ex-smokers are at greater risk due to the combined action of tobacco and radon.

Find out more and ask us for a quote at This email address is being protected from spambots. You need JavaScript enabled to view it. or by calling (+351) 213 504 540.