> studio apartment

  > Install a heat pump (reverse cycle air conditioner).

I moved into my own flat a few years ago and discovered the principle of Stoßlüften completely independently! When it's windy, I absolutely open the windows and doors for a few minutes, cold or not, just to change the air.

Salt. Sounds stupid and life-hacky but it actually works. You do have to replace it now and again when it gets caked up. Fill a paper coffee cup about 2/3 and leave it on the windowsill. When its done you can heat the salt up in the oven to get rid of the moisture but I almost never bother.

Handy but not very good, it works by alternating between heating the air to keep the room warm, then chilling to make the moisture condense in the unit where it can be drained away.

I'm not sure this solves the problem. That plastic is for reducing drafts. If you shrink it tight it will stop a draft but the surface will be just as cold as the window, and you will get condensation on the plastic itself.

If you don't shrink it tight, then the trapped air will still be humid

Blow warm air on it.

Oh, nice. I don’t think mine here in the US has an option to run it like that (but it sounds handy).

Do you have the fan instructions?

Use a router bit. Will make a nice edge.

Seems to be the consensus, thanks for the detailed reply!

Prefer drilling thru frame than door, for sure

I second this. I used to use 3M on some huge windows. Works great, no condensation, and has the added benefit of keeping your place warmer so you spend less on heating. Plus the tape always came off fine in the spring (important for a rental!). Just make sure everything is dry before you apply it otherwise you’re losing in the moisture.

I did look up. Yes, was measuring a voltage, didn't think it was one line, my mistake.

Thank you.

Now measured a continuity. Seems like everything is working as intended but light is always on anyway.

I haven’t seen them! Wiring is not my strength so having a game plan before taking shit apart is what I’m after.

Thanks.

They have a dehumidify cycle. A stand alone dehumidifier works better though.

Source: NZ, we're famous for our cold, damp, draughty houses with condensation on the windows and mould on every surface.

Right and mine had the % setting and my HVAC tec said I could lower it but give it 3-5 days to see results. In St Louis we don’t get super cold air that causes this all the time so by the time that waiting is up it’s back to not having condensation.

During that attic air when it felt like -20 outside I actually had water freezing on the inside of the window.

If I understand correctly, you have a combination wall switch that controls the light separately from the fan instead of 2 separate switches (one for the light and one for the fan). If this is the case, you can install wire nuts on the second set of black and white wires and leave them in the electrical box where you are installing the new light.

You probably should go the added step and disconnect the second set of wires at the switch as well, and put a wire nut on this end too. It is for added safety in the off chance someone flips the "fan" switch on and leaves it on. It would at least not have power running through the wire to nothing.

Most people don't bother with wire nutting the abandoned wires at both ends, but it is the right thing to do and a good practice to be in. You dont have to remove the extra wires for any reason.

Please don't wreck those beautiful doors😊

And try to seal up all of the vent passages as much as possible before lifting the unit into place. Ours spit so much grease through the "sealed" passages onto the cabinets above that I had to make blank off plates and seal up all the passages on the positive side of the blower. I'm going back to 2 separate pieces as soon as possible.

How about using the working opener until it no longer works? Why trash a working opener? Because some guy said it won't be warranteed? Who cares?

Your question isn't clear enough for anyone to give wiring advice. You haven't described what wires you're looking at either from the existing wiring or your fan.

> some mildew cleaner that you use in your shower every week

You are assuming facts not in evidence.

What's the manufacturer of your door?

And it adds an extra layer of insulation against the cold.