Is it worth buying a portable air conditioner? Which one to choose?

Hey. Due to the approaching heat, I planned to buy a portable air conditioner in a 4x4m room. The room may not be large, but it is located on the south side, so temperatures in the afternoon hours just make it impossible to stay in this room. For now, a fan is enough for me, but my head and eyes start to hurt from it, so looking at the popularity of the network, I plan to buy one of these air conditioners:
https://www.ceneo.pl/30074463#tab=spec
or
http://allegro.pl/klimatyzator-przenosny-klimatyzacja-trotec-2-1kw-i6777896701.html
Unfortunately, drilling in the wall (to mount a two-piece) is not an option, so I only have to take the air out of the window. I know that the above air conditioners are not the highest shelf, but I would like to avoid spending more than PLN 1000. I am not looking for a solution for years, 3 seasons for PLN 1000 will satisfy me. Do you think that such equipment is enough for this room? Take the stronger one? And as for the price of electricity - I can assume that at work 10h a day will be charged 10kW (according to specification), that is, some 8 PLN or will not work at maximum consumption?
Thank you in advance for all the hints.

Since the "fan hurts your head" from an ordinary fan, you will see how the air conditioner makes a noise, apart from that, bringing the warm air out the window = a considerable loss of cool air.

Saying that my head hurts and my eyes were just blowing in my face / head. Noise is probably not a problem.
Of course, I intend to mount a seal to the windows (films with a zipper). I know that it also does not give 100% isolation, but I wanted to know if these air conditioners will just be able to do it + I will not pay the other as much for electricity.

From my own experience I know that split inverter gets much less power than portable.
That's why I quickly replaced it, the hole in the wall that I had to do is only 12x8 cm due to the quick connector, the splits will be even smaller (holes).
Possible solutions: monobloc and spiro pipe for ventilation, split and modification of the window - PP / PE panel instead of glass for the summer period

Do you know which pipe diameter you need to take out the window? Not only that, to extract the hot air from the air conditioner, it must be possible to draw the same amount of outside air. The latter will be very warm - just outside.
This air circulation, necessary to operate the air conditioner, usually weakens the cooling effect. Therefore, the air inlet and outlet must be close to each other, but implemented in such a way that the air conditioner does not draw the hot air that he threw out. So inlet lower than the outlet.
In terms of electricity consumption. Cooling power is about 2.5kW. The electric power should be about 3 times smaller. Electric power times times and we have energy consumption.
Generally, you would not be crazy and the whole room will probably not cool down, but the air conditioner will be nice, as in the oven in winter.
Unfortunately, the most annoying will be the noise. 65 dB is a lot.

Michal90x wrote:

Due to the approaching heat, I planned to buy a portable air conditioner in a 4x4m room.

In a room of 6x4 m2, a portable air conditioner dedicated to a room of 25m2 gave a mediocre effect, a maximum of 2 degrees less than outside. It should be enough for your purposes.
Simply put - aim at a dedicated 2x space larger than the surface of your room.

I have an air conditioner and in the greatest heat I can not cool the 10m? room
The easiest one is thrown out a thousand zlotys

If I had to choose a windmill and a portable air conditioner, I would choose the second one. I have a used air conditioner, for a PLN 500 room with an area of 8m2 and feel the chillers, but unfortunately the disadvantage is: loud work and underpressure which sucks heat from other rooms. But as the colleague above wrote, the cooling of a larger supply, especially in high heat, may not bring the desired effect.

WędkarzStoLica wrote:

I have an air conditioner and in the greatest heat I can not cool the 10m? room

It's strange because I also have air conditioners and I cool one half of the house about 60m2 and the other workshop is 60m2 with cars.
Both have 12,000BTU each.
Both have separate circuits one inside cooling the other one out.

I am happy with them in July and August.

And these 3kW ymi these you chill in winter or in summer ....
Have you not been kind enough to write whether they are splits?

One window, the other one, with the pipes behind the window, has been converted into two outer pipes.

It will also warm up the topic, although the topic from last year and the "professionals" themselves are responsible for confusing the heating power with the power consumption of the device.
I would incline towards this: EBERG Yoda Y30HD due to the pipes mounted on both sides and although the basic set is only one and the other one would have to be bought, it looks good anyway.
If someone has an Eberg YODA Y30HD portable air conditioner, I would like to get to know the opinions because you can not find them from Polish customers too much. The other thing is sealing the window but there are also patents like the above mentioned link.

dir90 wrote:

the "professionals" themselves are responsible for confusing the heating power with the power consumption of the device.

Write straight who do you mean where he was wrong?
How do you imagine heating the refrigerant system of such a transportable air-conditioner?

I have not once dealt with the subject of portable air conditioning and there has always been a problem with noise and heat dissipation as well as condensation with meager efficiency

So I advise you to invest better in the external unit
in the era of inverters, such an air conditioner is very quiet and effective
when the internal fan is idling, its operation is almost inaudible