In Singapore’s heat and humidity, air-conditioning is practically a daily essential. Whether you’ve just collected the keys to your new apartment or are thinking about replacing an ageing air-conditioning system, choosing and using the right setup can make a significant difference to your comfort, electricity bills and long-term maintenance costs. But many households still end up overcooling rooms, wasting energy or overlooking simple habits that could help their systems run more efficiently. From learning the best temperature settings for day-to-day use to deciding how many units your new home needs, there are several smart ways to optimise your air-conditioners’ cooling effort.  CNA Lifestyle speaks to Daikin Airconditioning’s training manager Eric Tan Kuo Hon about how you can get the most out of your air-conditioning system, while keeping costs, odours and maintenance issues under control. YOU WANT YOUR APARTMENT TO BE COOL WHEN YOU GET HOME Activate the air-conditioner via a smart home app about 15 to 30 minutes before you reach home, advised Tan. The recommended setting? A temperature of 25°C with a medium-speed fan.  …