Oh god yes , here too. All of this. Corner flat, so huge glass windows on two sides, south and west, so really hot. I keep the blinds down as much as possible, but can't always for various reasons. Also can't leave windows open at night as it's on a main road, ground floor. And can't get a cross draft in any way.
I have a portable air con that vents out the window, which I sealed with those velcro stick on covers. It works ok, though not as well as I thought it would for the price, which was massive!
I would like to see about getting proper air con, but I can't see that our management would let us drill through the walls to put a vent in. Has anyone ever asked and did your management company let you? I would much rather get something in the ceiling than on the wall, as I don't have much space on the walls, but I don't know what is above the ceiling or how to access it, and it sounds like it would be really hard to get to? I looked into the air con that vents into the water system, but it's quite expensive, and at the time I was looking, was only available in London. I might look again though if people find that it's quite good.
I worry about the cost of the electricity for air con, as well as the environmental costs, but then I can't just melt at 30+ temps either! I think properly installed air con is cheaper than the machines venting out the window - does anyone know?
I was also looking into blinds that go on the outside, as that would be more eco friendly, but again it would require permission, and since it would change the look of the building to an extent, I suspect they'd be less likey to allow that than to drill a hole for air con. The blinds are also pretty expensive inititally, but at least you don't have ongoing electricity costs. I do wonder if they would really do enough, especially as I can't have them down all day!! Maybe an awning style, but again on a main road that might be difficult. It does apparently help to block the sun before it hits the glass though, rather than on the inside, which makes sense. Has anyone installed these? you can get remote operated ones, with an app, etc.
I have a tall Dyson fan that is fairly quiet, quieter than the portable air con unit, so that helps at night. I wondered about getting some of that bedding that has been advertised a lot recently, supposed to be cooling sheets and duvet covers. Ikea also has a cooling pillow with a gel side that might help.
It still gets cold in the winter too, which I don't understand! Not that badly though, but I do have to put the heating on every day, especially as I sit near the windows.
And the annoying thing is that despite the insulation, and the lower gas and elec use overall, it is not cheaper!! The standing charge is what kills me, as I don't use all that much energy at all, but I still have to pay the same standing charge as bigger flats or flats with more people etc, and it's really expensive. So it doesn't motivate me to cut usage all that much, as it doesn't save much money (but I do try, for eco reasons).