EcoFlow WAVE 3 Portable Air Conditioner

I've seen a lot of reports of people using the waves in vans, RVs, tents, etc. but not many people use them in an apartment, like a portable AC, so I wanted to give my opinion. Some background: I live in Madrid, Spain. Summers are VERY hot and dry (40°C/104°F every day during the peak of summer, with nights still in the 30s/80s) and winters are chilly (lows around 1-2°C/33-35°F, daytime highs up to 10°C/50°F). Humidity is relatively low. I have a small apartment that's about 30 square meters: there's a bedroom with in-suite bathroom, a kitchen next to it, and then the living room with a small hallway between the three rooms. I don't have a traditional mini-split or central A/C, and for heating I have radiators supplied by my gas water heater. I was surviving the summers with a traditional portable unit with a single-hose exhaust and paying tons for gas in the winter. I really wanted a two-hose unit because of the inefficiency of the single-hose one, and its inability to really cool anything that's not placed directly in front of it. I bought the wave 3 primarily because it was one of the only affordable options for sale in Europe with two hoses (although ridiculously expensive compared to the average single-hose unit). I don't go camping with it, I didn't buy the battery, and it has only ever been used with wall power. I got it in August of 2025, it's now November of 2025, so I've used both the cooling and heating functions. I made my own window insert using foam and duct tape. Yes, it is hideous, but it is functional. Summer results: In the summer, I have it set up in the bedroom. It runs whenever I'm at home and it'll keep the bedroom (around 10 square meters) at around 22°C/71°F, which is quite comfortable. In addition to that, the biggest advantage for me is that the room doesn't get a "stuffy" feeling like I did with the single-hose unit since I'm never pulling hot air into the living space. The disadvantage is that with my apartment layout, the living room will always be a few degrees warmer than the bedroom, so usually before bed I'll close the bedroom door to reduce the space it has to cool. That being said, it does cool the entire apartment to an extent, just not as much in the living room. With the old single-hose unit, since it's constantly pulling in air from everywhere, the living room would hardly change. Winter results: Since I work from home, I prefer most of the heating in the living room where I am during the day, so I move the unit there. The lowest temperature I've ran it is with the exterior temp at 1°C/33°F and the interior starting at around 12°C/53°F. It takes a while for the unit to get going, but the outlet temperature after about 20 minutes is 47°C/116°F. I usually just keep it on the lowest fan setting and it gets the room to around 20°C/68°F which is fine for me. I'm sure if I ran it on max I could heat up the room more, but with a hoodie and cup of tea it's fine, and electricity here is expensive. I have the opposite problem since the unit is in the living room where the bedroom is now cooler, but for me that's perfect for sleeping. I've noticed that when it is right around freezing outside, the unit will periodically do a "defrost" cycle, in which it stops blowing the fans but switches the compressor direction to essentially heat up the evaporator coil and melt any (I presume) ice. It's not constant and it doesn't bother me, but I suspect if I were in a more humid environment it would do it more often. Noise-wise, for me it's fine. It does have one annoying habit, even on sleep mode: at right around 4 am it will do something with the compressor (slow it down I think) and put it right at the speed where it resonates with the entire unit, causing a loud vibration/buzzing sound that wakes me up. My solution to this has been to set the unit to turn off after a few hours, so prior to 4 am. Then when I wake up in the morning I turn it back on. The room doesn't heat up too much between 4 and 7 am so I can live with it. For condensation drainage, I just made a small hole in the insulation in the window and had the drain hose run through that. Every 30 minutes or so it just spits out the water onto the street below like every other AC unit. Right now, since it's winter, I don't want to be randomly showering people walking down the street, so I have it go into a 5L container that I drain once every couple of days. In addition, I sealed off where the hoses connect to the unit, as there is quite a bit of air that escapes into the room. Would I buy it again? Probably yes. I'd prefer a real minisplit unit, but due to the rules regarding the building aesthetic, we can't have condensers hanging off the side of the building, and installing it on the roof is not very cost-effective for me. For my very specific use case, it works great. However I would not expect it to cool the apartment to freezing temperatures nor heat it to shorts and t-shirt weather. My electricity costs are quite high, and gas prices even higher, but with this essentially using a max of around 400 watts (compared to 2000 watts for a space heater, I don't know how much my old AC used), it's quite efficient. https://preview.redd.it/1sih9e8ki62g1.jpg?width=4284&format=pjpg&auto=webp&s=2b61721a0fdae98d5b84b56b236647e1205bd6f0 https://preview.redd.it/zhpldy7li62g1.png?width=1179&format=png&auto=webp&s=b9b2485e73597f28815115e4c07c4d830628d4cb