|Online ISSN : 2349-8080
Issues : 12 per year
Publisher : Excellent Publishers
Email : firstname.lastname@example.org
Bacteria are one of air-borne biological pollution sources in work room. Bacterial growth is influenced by various factors, e.g. temperature, humidity and ventilation. Ventilation system is categorized into two types, i.e. natural and artificial using air conditioner (AC). Unmaintained AC will become the source of bacterial growth. The present study aimed to determine the difference between bacterial count in AC room and non-AC rooms as well as to analyze the relation between temperature and humidity and bacterial count. Explanatory research with cross-sectional method was employed. The population of AC work rooms in IAIN’s Faculty of Tarbiyah and Teacher Training Science (FTIK) were 9 rooms, while the non-AC 4 rooms. Independent variables in the study were temperature and humidity, while the dependent variable was bacterial count in the air. The results showed that mean bacterial count in AC rooms was 65.55 CFU/m3, while in non-AC rooms 25.75 CFU/m3. Temperature measurement showed that the mean temperature in AC rooms was 27.44°C, while in non-AC 31°C. Humidity measurement showed that the mean humidity in AC rooms was 68.78%, while in non-AC 67.25%. Bacterial difference testing in AC and non-AC rooms showed P = 0.009, temperature relation test P = 0.006, and humidity P = 0.008.In conclusion, bacterial count in AC and non-AC rooms is different and there is a significant correlation between temperature and humidity and bacterial count.