I normally service them twice a year. Don't actually know how they do it, but they will take off both the outdoor and indoor unit and give a good rinse of jet water and air. Can't recall how much the service though.

I still not sure what econo mode does.
But the inverter will kicks in once it reached the temperature set. When starting the aircon, I will set it to coldest temp at full blast. Then in about 30 minutes, I'll set it to optimal temperature. It saves electricity if I do it that way rather than letting the aircon slowly cool the room. Before sleeping, I'll set temperature to 24'C and silent mode. Set it to turn off automatically at 5am. By 6am, my family will usually wake up by themselves because our body will adjust to a warmer temperature. This is my secret to waking up my children early for school.

Can set automatically?

normal service is abt RM80~120 per unit. If u done twice a year, that is good enough, in fact, very good.

econo mode is abt selecting the most energy saving program logic for the inverter units. In econo mode, the inverter will react more prudent in achieving the set/requested temperature.

inverter units is unlike normal unit. Inverter unit has motor running(compressor, cent fan) that dont just run on 50Hz(msia spec). They can run at 20~60Hz depending on models. By doing this, the motors will not draw too high current or energy whenever a parameter is out from control range. They can slowly adjust the parameters, running at slower pace when the variance is just small. Simple term, u need just 0.5celcius minor increase(cost someone open the door letting hot air in, etc), the aircond can run on 20~30Hz or 0.5HP, and when u just start the aircond, need 4~5celcius adjustment, it will run full speed 50~60Hz (2.0HP).

Don't think so. Joint venture -

http://124.150.140.81/~yorkoylc/main/index...id=31&Itemid=40

Yes, most newer model AC got timer functions in the remote.

Yea, I did some read up about inverter technology before purchasing my first AC. After realizing its worth, I went and did some survey in the market. Back then, Panasonic had lots of top choice inverter models in the market, but they're using different type of cooling gas which is more expensive and may require different piping size. In the end, I was left between Daikin and Mitsubishi, but Mitsu's model was very few and more expensive.
I think for my guest room I wanna try a misubishi. Inverter is a MUST. York and Acson are sturdy and reliable, but not energy efficient.

Panasonic models are running on higher pressure refrigerant, which actually are more efficient, and the performance are further noticeable for heating purpose during winter time. Hence, u need thicker copper piping and joints for the Pana units. And Pana units are more modern design coz those same units are cater for premium market overseas as well.

Daikin too has that higher refrigerant units, but they are not marketed here. Daikin Msia only has basic units.

York and Acson actually are not energy efficient, coz OYL is lacking in inverter technology comparatively to Japanese. But York/Acson units are very high performance units and have bigger cooling btu. Those that need fast blasting cooling effect can opt for York/Acson.

This post has been edited by K5WHITE: Apr 19 2013, 11:06 AM

installed my york 1.5hp non- inverter early this year for my master bedroom.. that time dunno york & acson under same roof.. then after 2 weeks my parents installed acson 1.5hp non- inverter at their house.. during installation i'm at my parents house.. very shocked seing d acson indoor & outdoor unit + d remote control 95% same like my york aircond.. then i asked the technician, he said york & acson under same roof, same factory at sg. buloh selangor.. then i look at d s/n & info sticker at d indoor unit, yupp.. it is same factory as sticked at my york indoor unit.. just only they stick different sticker brand at d aircond unit.. that time me very frustated coz not choose acson for my master bedroom aircond at d 1st place, coz acson is rm250 chaper than my york aircond unit.. btw, d aircond technician is same person who installed my york aircond.. my advise to anyone that wanna install new aircond unit, u may consider mitsubishi either inverter or non- inverter unit.. eventhou it's quite pricy, but i think it's worth for your money.. why i can say that? coz one of my fren installed mitsubishi 1.0hp non-inverter for his 2nd bedroom, size of d room is same like my master bedroom, got direct sunlight, but d cooling time to cool down d room much more faster than my york, indoor unit can say sooo quite until u cannot hear d aircond gas running in & out..

u get peace of mind warranty claim from york...hehehe