Maybe you can consider Hitachi DC inverter aircond. I'm agree with some people telling that this aircond slow during cooling. If you read the guide carefully, you must press high speed button to turn to fast cooling mode. First 30 seconds, the aircond compressor still not working (intelligent design to cool your outside cooling unit before the cooling indoor process). Within 5-15 minute, your room temp is ready. During this process, you can hear the compressor and fan running in higher speed. Speed is running low to high in few different stages. It like CVT gear box or is similiar sound when Putra LRT electric motor.

High speed only running on fast cooling mode and also if 2-3 minutes the tempereture can't reach as you set. In my expirence, I'm not hear compressor sound at night because cooling compressor only running at very low speed because 5 minute enough to recooling the room when sleeping(Thanks to Hitachi DC Inverter).

For your info. This unit come with 2 years (Indoor unit) and 7 years (Compressor Unit) warranty. Bought from Legend Electric SS2 (same row with Public Bank SS2 RM1550 include installation (that time all selling RM1700 include installation). Already 1.5 years old. Working great.

One thing to share, why I chose this Aircond? Filter made from stainless steel. Competitor using "Nylon", it means is not lasting.

Here are my electric usage after changing to Hitachi Inverter 1.0hp compare to previous Japan No. 1 Inverter (change because kena lightning strike, previous model to noisy)


Temperature set: 25 degree celcius
On time: 12 hours a day with silent mode (7.00pm - 7.00am)
Room size; 350 sqm


Previous electric bill:

RM 55-65

With Hitachi Inverter:

RM 42-48



Hope you choose aircond wisely... That why people confuse either to buy Toyota or Proton... This 2 car also got aircond rite?

This post has been edited by rs700bhp: Jun 28 2011, 06:17 PM