Kogan - SmarterHome™ 4.1kW Inverter Portable Air Conditioner (14,000 BTU, Reverse Cycle) KAPRA14WFGA

I have the 3.5kW version of this and it's real cold. I was running it on 18 degrees, but it felt like I was living in a fridge so had to turn it up. Highly suggest. https://www.dicksmith.co.nz/dn/buy/kogan-smarterhometm-41kw-inverter-portable-air-conditioner-14000-btu-kogan/

We rent and ended up getting one for our bedroom cos the landlord won’t install an upstairs aircon (it’s gets to like 30° in summer up there) and honestly, it’s been great. It actually does cool down the room - bedroom door needs to be closed for it to get right down, but it gets cool enough that I can use the doona though. Yeah it’s a bit noisy, but idk I can sleep through most things so that doesn’t bother me. And we have a bit of a set up on the window, with some plexiglass - I have no idea about the logistics though, I wasn’t there for the set up. But basically keeps more hot air out while still allowing it to blow out hot air. I think ours was just from Kogan. Worth it if you’re renting.

Kogan ones are good, and cheap

I've bought one from bunnings and 2 from kogan. They all work great, but they are all noisy. A very loud white noise machine, I'm a light sleeper, but coolness over rides that for me

I paid $400 for a Kogan portable airconditioner 10 years ago and it is still going strong today.