Kogan - SmarterHome™ 2.0kW Portable Air Conditioner (7,000 BTU) - KAWFPAC07JA

As a former HVAC engineer, things I would consider: Sizing: Unless you're running a data center out of your home office, 200w of cooling capacity per square meter of floor space is a good rule of thumb. e.g. a 3x3m room would need roughly 1.8kw of cooling. That's a high end estimate so if budget is an issue you might be able to go down to 150w per M^2. Setting up: Keep the exhaust hose run as short and as straight as possible, insulate the exhaust pipe with bubble wrap as a cheap option to stop the heat from the exhaust bleeding back into the room. Make sure you can access the drain to remove accumulated water from the Evaporator, some models will shut off once they accumulate too much water so you may need to set up a drain into a large bottle so you don't have to empty it every half an hour. Tape up any gaps where the window doesn't fit flush with the window hose so you don't lose conditioned air. In your case I'd consider buying an additional window kit so you can leave the exhaust hose in place and just move the unit from room to room as you need. And keep the filters clean, for the love of god keep them clean. As for a brand recommendation, I just bought a little 2.0kw Kogan unit for my partners home office (renting, plus the design of the windows meant a portable A/C was the only option), for it is it goes quite well. I have a dodgy old ebay special (Devanti) in my home office, it's seven years old and it still runs fairly well, I hate to think how much power it uses though.

Kogan yea, the vertical one I got last year for sub-$500 is FAR better than the one on wheels with a hose I previously had haha. Planning on buying another soon during the sales.

I have a Kogan wifi one from a few years back, works great for the size of room it is rated for, just a bit noisy - which I expect would be the same with all of them

Kogan ones are good, and cheap

While I can't recommend a particular model you are lucky because I have researched the shit out of this. Firstly try avoid a portable air-con if you can for all these [reasons.](https://www.youtube.com/watch?v=_-mBeYC2KGc) If you are staying in the same class room all day I would consider talking to someone at local council about the legalities of fitting a box window aircon unit with a [no drill bracket.](https://www.amazon.com.au/Fioracl-Conditioner-Mounting-Drilling-Universal/dp/B0B2BQKYCB/) This would be ideal since the noise and heat would be shifted outside. Maybe consider just checking if it is ok with the principal instead of council if no one is likely to be bothered by it. If you can't do this and are looking for a portable aircon get the most powerful unit you can (the bigger the BTU number the better) from the wall sockets you have (check if it can handle the power requirements using a small heater/blow dryer/kettle). Get one that allows you to fit a second intake hose to the unit. [Some units come like this from the factory](https://www.youtube.com/watch?v=ZhggpHRYCRs) (you will have to order the second hose kit from the USA) [others you will have to modify yourself](https://www.youtube.com/watch?v=9NCtsZvqZ94) using stuff purchased at Bunnings. I did mine (a Kogan unit) using corflute, fabric tape, flexible foil ducting and twist ties. Just make sure the intake pipe is bigger than the exhaust pipe and make the mod as airtight at possible. Consider getting an [insulation shield](https://www.amazon.com.au/Portable-Hose-Insulation-Sleeve-Conditioners/dp/B0CXPNHDP1/) for the exhaust pipe. All the negativity you hear about portable aircons not working is from people who used a single hose unit or those who tried to cool rooms that were too big for the unit . Yes the noise is an issue with portable aircons but this is reduced one you fit the second intake hose.

So you have multiple tiers of answers here. Portable aircon, venting outside. I got one from Kogan a while back for $250 that cooled my entire large studio apartment really well. Reddit it's suggest the following from bunnings: "Arlec Arlec 3.3KW 11000 BTU Portable Air Conditioner" Otherwise, look at increasing the air pressure inside the room with fans to create circulation. If the room is normally warmer than the hallway or outside then a vornado fan from Amazon does the trick. They are cheap, can run 24/7, and have fantastic air circulation. I have two at home that run all the time and they help. Bootleg or Jerry rig options will be varried in success. The wet towel over a fan is effective, as is a misting fan, but moisture in the room will be an issue if you don't vent it after a day of this or have an outtake fan in the room. Even pointing a fan at a bucket of water does the same effective thing in a small area. Otherwise, always have some Zooper doopers or frozen water bottles (small ones, reuse the plastic) in the freezer and break em out at the hottest or most draining part of the day. You'll get a tonne of cred from the students. If cost is a consideration, sell those Cadbury boxes of chocolates that kids normally do for fundraisers. The freddi frogs or caramello koalas. You'd be surprised how much you can earn from them if you sell them in the school. And if anyone gets annoyed at you for it, tell them it's to raise funds for a cooling solution in your classroom.

Been running a Kogan Unit for 6 years. Survived 4 relocations.

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

I purchased a portable AC from Kogan 8 years ago for about $300. It is still going strong today and can cool down a room. Pros: -Easy installation -East Setup -Portable -Cools a room fast -Cheap upfront cost -I am pleasantly surprised that it has survived 8 years and is still going strong. Cons: -Noisy -More power hungry then other options. -Large