With the ever increasing temperatures in Singapore, it is not surprising that the air-conditioning is rapidly becoming a must-have for all households. And if you love coming home to an air-conditioned home like me, it pays 'literally' to keep an eye on the rising cost per kilowatt versus falling temperatures. While we are still some distance away from the peak in 2008 Q4 @ 30.45 cents per kWh, it is not hard to see that we are definitely heading back in that direction.

So before you put your money down on your next air-conditioner, you should learn a little more about them and hopefully save yourself from losing more $$$ in the future.