Hi All

I've bought over a 3NG resale more than half a year back that came with a National non-inverter aircon system which I reckoned its more than 5 years old.

As per most 3NG setup, the CU is installed right outside the aircon opening in the master bedroom; which is sadly only separated by some simple plywood installation.

Naturally, the main issue will then be the noise the CU creates whenever the non-inverter fan unit turns on and off randomly while trying to adjust to the room temperature. May I know if those who faces the same issue as me, what was done to improve the situation?

Will installing new inverter aircon system really help? Which brand carries the least noisy CU?

Will HDB approve if we were to engage a contractor to brick/cement up the opening area since we do not need the "hole" anymore?

Will changing just the fan unit (not the entire condensing unit) help?

Regards

Hi Tim. Thanks a lot. I've done some research today as well and came to conclusion that it's about time to change the Aircon unit. It's a bit wasteful though as this current system is still working perfectly well. Will be looking around for System 3 9000-9000-12000 BTU unit first. Thanks!