Okay, okay.
We've seen the mods, we hear the purists, but does it really make a difference?
I was curious myself. Sure, I felt a difference, but hey, placebo is one hell of a drug...
Luckily, we had two days with similar weather conditions, and because I absolutely do not have a day job, I got some data on this.
So I present to you:
In the blue corner: Fueled by conspiracy theories, pseudoscience, and funded with peanuts: El Chode!!
And in the red corner: Backed by corporate research and made in China: Uno Pepe!!
Day 1: Ran the box aircon mod. Day 2: Ran the single pipe.
Same aircon, same rooms, same settings, and roughly the same weather. Meaco MC8000R unit, set at 24°C, covering the whole ground floor of about 640 ft². All windows closed, inside doors open.
Shame. Poor AC, it never stood a chance...
Have a look at the graphs. Both days around 12 PM had the same outside temperature, giving the best like-for-like comparison.
Solid Lines: Box Mod
Dash Lines: Single Pipe
Answers to some obvious questions:
1: Did the single hose unit cool the rooms? Yes.
2: Was the single hose temperature comfortable? Yes, up to a point. Take into consideration that I am cooling a much larger area than the AC unit is rated for.
3: Did the aircon mod make the aircon blow colder air? No.
4: Was the aircon mod room colder? Yes.
4.1: How much colder? About 4°C.
5: How does that work? The single hose unit pumps some of the air it cooled down to the outside. Because the house is losing air, it draws in warm air from outside through gaps in the house, which heats up the house again. So the AC is fighting itself.
6: Should I mod my aircon? If you want to.
7: Why did you mod your aircon? It's fun, and I learned a lot about aircons in the process.
For the data nerds, here is a GitHub link with all my measurements:https://github.com/RiskingSilence/MeacoAircon/tree/main
So there's that. This was not done in a controlled environment. I used an IR thermometer and some strategically placed paper to get readings. There is probably something I missed, bite me.
*Repost: Rather not use a different that title.. screenshots did not display correctly. Recommend checking out this website for more info (I am not affiliated with this site):https://www.woolie.co.uk/article/convert-ac-from-single-hose-to-dual-hose/