Energy-Saving Tips for Aircon Users in the Philippines

The Department of Energy recommends setting your aircon to 25°C, which strikes a balance between comfort and efficiency. Every degree lower than 25°C increases energy consumption by approximately 3–5%. Filipinos often default to 16°C or 18°C, but in a well-insulated room these settings result in over-cooling and unnecessary electricity use. Use the fan or sleep mode when temperatures drop late at night. Most modern units allow you to program a temperature increase of 1–2°C after midnight, which is barely perceptible during sleep but can cut nighttime consumption by 15%.

Your aircon works against every source of heat entering the room. Heavy curtains or blackout blinds on west-facing windows can reduce solar heat gain by 30–40%, meaning your unit does less work during the afternoon peak. LED lighting generates 80% less heat than incandescent bulbs — replacing old bulbs in an AC room has a measurable effect. Sealing gaps around the door and window frames prevents cool air from escaping and hot air from seeping in. A simple draft excluder under the door costs under PHP 200 and can improve your aircon's efficiency noticeably, particularly in older homes with poor door fits.

A dirty filter forces the aircon to work harder to push air through, increasing energy consumption by up to 15%. Clean the filter every two weeks if you run the unit daily — this takes under 10 minutes and costs nothing. Have the evaporator and condenser coils professionally cleaned at least once a year to remove built-up dirt that a filter cleaning cannot reach. Ensure the outdoor condenser unit has at least 50 cm of clearance on all sides and is shaded from direct afternoon sun if possible. A condenser sitting in direct sunlight runs less efficiently than one in shade. If your unit is in a tight enclosure, consider adding ventilation to help hot exhaust air escape.