I've been using 4 inverter ac (1x2hp & 3 x 1hp) for the past 4 years. No issue except have to pay a lot to TNB Just make sure it's connected from different MCB.

No sign of wiring overheating or what so ever. (Checked with FLIR thermal camera)

Borrow from my brother. His company have some project with TNB that uses FLIR.

So far, everything normal. No sign of wiring overheating even though 4 ac are on simultaneously.

And I use this to check each AC current / load. All good

I'm not worried about lighting load as 100% LED light use throughout my house. Too little load.

This post has been edited by haturaya: Dec 26 2016, 10:34 PM

Yup, setting temperature plays big role too. As for me, 24-25C is the sweet spot. Comfy, not too cold, not too warm. Just nice. 3 bedroom ac 9pm till 6am daily. Monthly TNB bill between RM270 (rainy season) - RM350 (hot / dry season)

This post has been edited by haturaya: Dec 26 2016, 10:41 PM

Borrow from my brother. Can't afford to buy one. FLIR super expensive.

Try not to use thick blanket. Just thin blanket will do. 24-25C is nice setting. Also depends on the room. Make sure no gap that cold air can 'escape'