If you want to save electricity... use one with an Inverter
built in.
What an inverter does is to control the speed of the motor.
Last time, air cons with thermostat will simply switch the motor
100% or 0%. Frequent start stop of the motor takes up alot of
electricity.
An air con with inverter, will keep the motor running bwtween 0 to
100%. This way, your motor is always on but adjusts itself to
temperature so electricity is regulated.
As far as I am concerned, air con is simply a fan unit and a
compressor. So as long as the compressor does not leak and the fan
unit is reliable, any brand shouldn't be a problem.
Choose a fan unit/compressor combi with the BTU suitable for your
needs.
A typical HDB bedroom will suffice with 9000 BTU. In fact 9000 BTU
i find is slightly too poweful.
After aircon installation, you can save more electricity by
insulating your room well. This way, the air con will always
maximise it's low speed time.
