r/airconUK

Probably just me expecting too much but we bought 9000 btu unit for our small bedroom.

We have the 1.5m hose it came with vented out though a 4mm perspex sheet which is tight against the Frome with hook and loop tape. The hole for the hose is also sealed and airtight.

I have the unit plugged into the mains.

It goes down to 17 but the rooms at a steady 20 even though on high fan speed for a few hours.

Should I expect more or is there something else I need to do like dehumidify the room first?

Was lucky enough to get an AC by Bosch on Amazon last Wednesday, got delivered in a day. This is the Bosch 5100. This was expensive (£699) but to live normally and peacefully I don’t mind a few hundred quid trade off.

First impression: It’s really good, cools our attic room from 30-24 degrees really quick. Will put a longer review in a few days. Our attic room gets really hot and stuffy because of all the insulation in attic and direct sunlight.

The window kit i ordered was a bit too big so need to fix it. Original hose is not long enough so it’s on a table rn but any suggestions on a good extra hose?

(These still pop up in stock on random times on Amazon so keep checking.)

After seeing everyone do dual hose modifications to their portable aircons, I've jumped on the bandwagon with my own take. Why not, it's a bit of fun and if everything goes well the AC will work better afterwards.

Didn't really want to make one out of cardboard, and I don't have the brains to make something and get it 3D printed, so I repurposed some bits you can get on Amazon/Aliexpress.

Wanted it to be as easy as possible to make, require minimal tools and skill, be fully and cleanly reversible (no tape), and effective.

And it does work, it's pretty air tight aside from the small bit exposed above the box (see third picture). I got pretty lucky that I was able to find such a conveniently sized box.

The real test would be how effective the aircon will be when it heats up again on Wednesday.

Supplies:

Bought an aircon hose, hose attachment (for a Comfee unit apparently, it was just the cheapest one I could find), pipe insulation, and an outside inlet/outlet piece for £24.71 in total from Aliexpress. Note I used coins (basically AliEx points), so it would be £10 more w/o points.

Found a plastic box roughly the size of the condenser inlet for £11.99 on Amazon, and an automotive pollen filter that fits the box (BMW part # 64312284828 which is 188x187x25mm) for £9.99 a pair on eBay.

Box will be attached to aircon using velcro straps which was £4.60 a roll.

Sundries and tools include a hot glue gun w/ glue, zip rivets, cheap flat window/door seals (which feels like it's made of PU), a drill and a drill bit, and some way to cut the plastic as well as clean up the cuts/holes you make (I used an angle grinder and a dremel).

Methodology:

Drilled holes on the edges on the hose attachment bracket and bottom of plastic box, then cut a hole the size of the hole of the attachment into the bottom of the box, apply seals to bottom of the attachment piece, then secure hose attachment bracket to box using zip rivets and hot glue (ensuring air tight seal).

Apply seals to top of box. Optionally make a seating area for the pollen filter at a suitable location inside the box. You can make this out of anything, really. I used leftover seals, but you could fashion something out of cardboard or use hot glue to make a lip. I did this as I didn't want insects and other large debris getting eaten by my aircon, and a pollen filter of this type shouldn't be too restrictive.

I didn't cut the tails of the zip rivets in case the aircon was choking for air. I can easily add a 140mm fan or something to the box if need be using the rivets as an attachment point. I definitely not cut them because I couldn't be arsed.

The Comfee hose attachment thing ended up being slightly too big for the 5.9 inch hose, so I used more window seals and a bit of hot glue to make the hose fit correctly (I didn't glue to the hose to the piece, just effectively made the receptacle smaller so the hose fit with friction).

Assemble hose (sleeve + outdoor inlet), then strap box assembly to aircon's arse. Then attach hose to box and feed inlet hose outside. Done.

Hello, I had AC installed in my office 7 years ago.

3 floor house, office on top floor.

I only just spotted how big the gap is where the ac cables go in the house.

Its a bad angle as there is a forest right next door so I cant go back more.

I have no idea if it was installed like that 7 years ago or it has somehow degraded over time?

I was extremely hot today waking around B&M and to my amazement I passed by a working AC (safe to say I was glued to it for 5mins 😅) however I liked it so much that I took photos of the model so I can buy one myself but was perplexed as it was only connected to power and I didn’t see any hose attached and I thought that would be great for my flat as I couldn’t accommodate a hose 😅

Looked the model up and it should have a hose attached for it to work properly (of course, what was I thinking 😒).
Without a hose attached to vent the hot air out, it will cause it to simultaneously cool and heat the same room, resulting in zero net cooling and eventual overheating.. I mean isn’t that dangerous ?

TLDR: I did the mod, and it works

I bit the bullet in last year's heat wave and got a portable single hose unit.

This year's heatwave was worse and really highlighted the issue with these single hoses.

It blows cold air, but the moment it stops i'm instantly warm in bed.

3D printing and a bit of tape + a cardboard window kit, and voila the physics works.

Last upgrade will be a custom perspex sheet on the window, anyone tried it?

The hose is meant to be attached to this fitting which attaches itself to the unit for the heat to go out through via the window.

However the bloody hose won’t stay attached to the fitting for love nor money. Tried taping it together but no joy. Any ideas?

So I’ve just bought one of these from cef (electrical wholesaler if your in the uk these are in stock at around 850) it’s getting hot this week and my plan is to put both young kids in one bedroom and use these with ducts and a window kit until I have more time to properly core the wall and fix , can anyone see any potential flaws in my plan ?

Hi, just wanted to tell people here abt the ac I just received.

Got it on joybuy as a pre-order on 25th of June. Never heard of them before; checked trustpilot reviews and decided to chance it. Bought it using a credit card, just in case.

Estimated delivery time was 6th of July. Received it today.
Seems like this company is legit after all.

Going to wait until tomorrow to test it out (thank you to everyone who said that refrigerant needs to settle first)

TLDR: Running a dehumidifier with the window shut may make you feel colder even if it heats the room up.
Room was 32°c but “felt like” 42°c.
Ran dehumidifier, room heated to 33°c but “felt like” 33°c.

I’m on the spectrum and one of my quirky little obsessions is humidity, originating from a damp problem in my bedroom.

I own loads of hygrometers (things that show you the relative humidity in a room) to prevent damp, and a 12l dehumidifier. I found that in the winter, when I went in the room and it was very humid (>60%) that the room would feel FREEZING. I ran the dehumidifier, got the humidity to like 40%, and the room felt amazingly warm (relative to how it was before I ran the dehumidifier).

I went down a rabbit hole the other day and thought maybe the inverse would be true, because everyone who defends themselves against Americans etc saying “29 degrees, that’s not even hot!” references how the humidity of the British Isles makes it hotter.

So I begrudgingly closed the window despite it being cooler outside at the time, and turned the dehumidifier on. I started at 32°c, at 75% relative humidity, which was absolutely unbearable, and let it run for a few hours. I ended on 33°c and 35% relative humidity, because the air was being heated by the condenser in the dehumidifier and the window was not open to let the hot air escape.

It felt SO MUCH BETTER. I later looked at this chart, and saw that what I started with, 75% RH + 32°c, had a heat index output (the “feels like” temperature) of 42°c, and what I ended up with (33°c and 35%) had a heat index of 33°c.

Maybe don’t do this if you don’t have a hygrometer (Though they’re very cheap on Amazon, etc) because if your room isn’t humid to begin with it’s a waste of time.

Human sweat cools us down when it evaporates, but at humidities of 55% and more, the sweat begins evaporating less efficiently, and this makes a huge difference to what heat feels like.