The most important residential air conditioning service in Singapore task to ensure the efficiency of an air conditioner is to regularly replace or clean its filters. A clogged, dirty filter can reduce airflow and significantly reduce system efficiency. Additionally, when airflow is blocked, the air bypasses the filter and deposits dirt directly into the evaporator coil, impairing the coil’s ability to absorb heat. Replacing dirty, clogged filters with clean ones can reduce your air conditioner’s energy consumption by 5 to 15 percent.