HI guys, does anyone has an reliable air con contractor to recommend? My house is undergo renovation and need to relocate and change the existing air con pipe plus servicing. Share with me if any, TQVM!

He he that is gd idea for u, wall fan can auto swing, but when going to clean that is a bit hard for remove steel cover

Wall fan vs ceiling fan: for wall fan much higher noisy and cover area smaller, also difficult to remove grills cover, but also look something ugly
Ceiling fan look more class, have more quiet & easy clean. 

But mine also smaller for living room just like your master bedroom size

Pana ceiling fan also got cheap one, but for ceiling fan can cover wider.

Ladder for most household must have right?
If you living in landed house, if condo or apartment will be slightly lower then used chair is settle, used wall fan I dun think not need chair height.

i wanna believe if this is happening in PRC  

but is Malaysia also practice this way ?