Central air conditioning and ventilation system testing agency

The importance of hygiene testing for centralized air conditioning and ventilation systems cannot be ignored. Regular cleaning and disinfection of these systems can not only protect our health, but also improve their efficiency and lifespan, and enhance indoor air quality. We should take this issue seriously and take action to ensure that the indoor environment where we live and work is a clean, safe, and comfortable place.

　　Central air conditioning and ventilation system testing agencyAccording to the hygiene standards for centralized air conditioning and ventilation systems in public places, public place operators should conduct at least one inspection of the centralized air conditioning and ventilation system every year in accordance with regulations. If the inspection results of the centralized air conditioning system do not meet the standards, they should rectify them in a timely manner to ensure that the hygiene quality of the centralized air conditioning system meets the standard requirements.

The hygiene inspection of centralized air conditioning and ventilation systems mainly includes the following aspects.

1、 Surface inspection of air ducts: dust accumulation, total bacterial count, total fungal count;

2、 Air supply testing: PM10, total bacterial count, total fungal count, B-hemolytic streptococcus, fresh air volume;

3、 Cooling water and condensate water testing: Legionella pneumophila.

Secondly, ventilation ducts are the main channels for air circulation. If there is accumulated dirt and bacteria, it will not only have a direct impact on indoor air quality, but also affect the ventilation effect of the system. Therefore, regular cleaning of ventilation ducts is an important step in maintaining fresh air.

Finally, for the hygiene inspection of the centralized air conditioning and ventilation system, it is necessary to entrust a professional testing agency to collect air samples using specialized instruments, and conduct bacterial culture and identification analysis to accurately determine whether there are pathogenic and harmful bacteria in the air conditioning system. Only by promptly detecting and taking corresponding measures can we ensure clean and healthy indoor air.

*If the microbial indicators in the air conditioning supply do not meet the requirements, some pathogenic microorganisms may drift with the wind through the air conditioning supply during daily use, allowing the human body to inhale pathogens through the respiratory tract!

*If the PM10 index exceeds the limit, it can also cause poor air quality in the workplace, resulting in discomfort symptoms such as difficulty breathing and dizziness for people in air-conditioned environments.

Legionella pneumophila, also known as "Legionella", is a pathogenic bacterium hidden in air conditioning refrigeration systems. It is prevalent in summer and autumn and is mainly infected by inhaling carrier droplets.

The common sources of infection are contaminated air conditioning and water supply systems, which are mainly caused by long-term use of air conditioning without regular cleaning and disinfection. Bacteria are blown out of the air with cold air and float in the air. After being inhaled into the human body, symptoms of upper respiratory tract infection and fever may occur, and in severe cases, respiratory failure and kidney failure may occur.

　　Central air conditioning and ventilation system testing agencyIf the centralized air conditioning and ventilation system is not cleaned, disinfected, and maintained in a timely manner, it is extremely prone to air pollution such as bacteria, fungi, and dust. Harmful substances can enter the indoor air through the centralized air conditioning air system, causing various diseases in the human body. The specific requirements for centralized air conditioning testing include: fresh air volume requirements, total bacterial count requirements, total fungal count requirements, Legionella pneumophila requirements, dust accumulation requirements, etc.