One of my old Hitachi 18K BTU inverter air conditioners (about 9 years old) started blowing warm air. It was used everyday for a minimum of 12 hours. Did lots of research on the internet and it seems in the past, most people most success with Mitsubishi and Daikin. However these two manufacturers offer the lowest warranty in Thailand, 5 years on the compressor and 1 year on everything else. I did notice that Daikin offers 10 year warranties in India on their compressors. I wonder why they don't offer 10 year compressor warranties in Thailand?
I settled on a new LG SCQ18A.S11 18K BTU replacement for 35,000 baht with installation, removal of old unit, and 2000 salvage credit on the old unit.The list price was around 43K baht. It has the new dualcool compressor warrantied for 10 years which is supposed to cool quickly, 3 years warranty on everything else. It has lots of features like connecting to your phone, and a 3 star efficiency rating. All the features are at the LG website but there isn't a English language manual, only Thai language for this model.
I think I made a big mistake buying this LG. After running for 5 minutes, set at 16C, it was blowing 77F air, after 15 minutes 65F, after 30 minutes 55F. Very slow cooling in my opinion, yet one of the marketing points was that it has very fast initial cooling due to the new dualcool compressor. I decided to compare it to the old existing Hitachi (18K BTU) inverter that was still working, In 5 minutes the Hitachi was blowing 50F air, at 10 min. 44F air. This was a fair comparison since the room sizes are exactly the same and both indoor and outdoor starting temperatures were exactly the same. I also have a very old Mitsubishi 18K non-inverter which runs everyday for about 5 hours and it has the fastest initial cooling even faster than the Hitachi.
Does anyone know of a great fast cooling inverter air conditioner with a long warranty and good reputation? Maybe I should go back to non-inverters?