Air Conditioner Running 24/7 Costs Only $500 Per Month! Insider Shares One-Tap Energy-Saving Trick, Certified by Taipower for Fast Cooling and Efficiency

As summer temperatures soar, many people's first action upon returning home is to turn on the air conditioner—only to be shocked later by their electricity bills. Is it really more energy-efficient to keep an inverter air conditioner running continuously? Recently, a netizen from Taichung shared on a social media platform the results of running their air conditioner non-stop for two months. The latest electricity bill came to just NT$1,000—around NT$500 per month. In contrast, her parents’ household, which follows the habit of turning the AC on and off, pays over three times more in electricity. The post sparked heated online discussion and revealed three energy-saving tips, which Taipower has certified for fast cooling and energy efficiency.

Air Conditioner Running 24/7 for a Month—Shocking Electricity Bill Revealed

A handmade chocolate shop owner from Taichung posted on Facebook that because her first-floor space houses pet turtles requiring constant temperature, her home’s air conditioner is almost never turned off year-round. However, the latest two-month electricity bill totaled only around NT$1,000. She added that her parents also use the same brand of inverter air conditioner, but due to their habit of turning it off when leaving and restarting it upon return, the frequent on-off cycling results in electricity costs over three times higher than her 24/7 operation.

She explained that her first floor has an open layout, with no partitions between the living room, laundry area, and kitchen, covering approximately 30 ping (about 99 square meters). A single Daikin inverter air conditioner handles temperature control. Besides this AC unit, the main electrical appliances include a 17-kilogram heat pump washing machine and other daily household devices. Many netizens were curious about how such extreme energy savings were achieved. The shop owner openly shared that to fully leverage the advantages of an inverter air conditioner, the 'set temperature + auto fan speed' combination is an essential golden rule. She also flexibly adjusts the temperature based on whether she’s home or hosting guests.

Insider Shares 3 Air Conditioner Energy-Saving Tips

- Daily Temperature Setting: Keep the temperature at 28°C with fan speed set to auto. - More People Indoors: When hosting guests or when more people are present, lower the temperature to 26°C and use electric fans to assist air circulation. - Don’t Turn Off When Leaving: When leaving briefly, do not turn off the air conditioner—simply raise the set temperature slightly.

Roof-Level or West-Facing Homes: Think Twice Before Imitating 'Never Turning Off the AC'

In response to questions from some netizens, the original poster later clarified that her first floor has a dedicated electricity meter, the house does not suffer from west-facing sun exposure, and the air conditioner’s capacity (tonnage) is sufficient—factors that enabled such energy efficiency. For homes on the top floor, with severe west-facing sun exposure, or high indoor heat sources, even inverter air conditioners may run their compressors at high power to maintain cooling. Such homes are advised to first improve indoor insulation before attempting to imitate the 'never turn off' approach, as otherwise, the expected energy savings may not be achieved.

Taipower Shares 3 Air Conditioner Energy-Saving Tips: Cool Faster and Save Energy

Taipower has also shared three energy-saving methods on Facebook, which allow faster indoor cooling while saving electricity:

1. Use Electric Fans or Circulating Fans: Running electric fans or circulating fans alongside the air conditioner enhances indoor air circulation, improves cooling efficiency, and saves energy. 2. Set to Auto Mode: When first arriving home, set the air conditioner’s fan speed to auto mode, allowing the system to adjust airflow based on ambient temperature. 3. Set Temperature to 26–28°C: Since raising the air conditioner temperature by 1°C can save about 6% on cooling power, Taipower recommends setting it between 26°C and 28°C for optimal comfort and efficiency.