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I know this edges pretty close to a shopping recommendation, but I hope that I'll manage to stay on the good side. If not, please tell me and I'll delete the question myself.

My situation: I live in an (older) apartment block have a kitchen without a range hood. I also have no holes in the walls to put the duct into (technically a hole could be drilled, but for various reasons the proper paperwork is nearly impossible to do). There is a ventilation hole, but the local fire safety regulations forbid blocking it (since I have a gas stove/oven), explicitly mentioning that range hoods may not be connected to it. However I could put a fan in it, since that does not block it.

I've looked at various recirculating hoods, but they all seem to just filter out some odors and grease (which is nice), but not water vapor (which is not nice). The water vapor actually is a problem occasionally when we do some heavier cooking. I've had my kitchen walls slick with moisture on more than one occasion. What I'm surprised about is that I cannot find any hoods with a built-in dehumidifier. Sure, the device would get much heavier and bulkier, and need a connection to the plumbing, but so what? It'd work for me. :P Does anyone know if this exists, and if it does, what keywords I should look for?

Barring that, what other options do I have? What kind of device (or combination of devices) would provide the best kitchen exhaust solution while not requiring a dedicated hole in the wall?

  • Where on earth are you? Is that "ventilation hole" intended for intake (makeup) air, exhaust air, or just as a natural vent? – ThreePhaseEel Jan 3 at 4:43
  • A "natural vent", I think. I'm in Latvia and this is a Soviet-era apartment block. They are...special. This day and age they probably wouldn't pass half of all the building codes, but most of the nation lives in them, so we have to make do the best we can. The hole in particular leads to a vertical shaft which terminates above the roof. The idea is that this is a "natural vent" (I think that's the term). The hole is near the ceiling, and in case of a gas leak the idea would be that the gas raises up (it's lighter than air) and vents through there. – Vilx- Jan 3 at 11:47
  • @ThreePhaseEel - The nonblocking regulation is actually fairly new. It went into effect on 1st of January, 2019. – Vilx- Jan 3 at 11:49
  • Guess we file that under "bizarre soviet building design"... – ThreePhaseEel Jan 3 at 12:37
  • Dehumidifying actually takes a lot of power. You're putting a ton of energy into the food to turn the water into steam, and a similar amount of power is needed to pull that water out of the air and condense it. I think the only dehumidifier that comes close to handling that demand would be your whole-home air conditioner. – JPhi1618 Jan 3 at 15:43
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One solution is a window extractor fan.

Cutting a hole in the wall is pretty permanent, but you can always replace the glass in a window if you need to restore it. Actually cutting a hole in the glass is a job for a professional, but it's pretty quick and doesn't make much mess.

Any room with a gas burner (like a cooker) needs a vent to allow fresh air in, otherwise you'll use up most of the oxygen and it'll start producing poisonous carbon monoxide. If you add a fan to suck air out of a room, it's even more important to have a vent to allow fresh air in.

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  • Both of my window panes are openable, and instead of plain glass they are special double-glass packets filled with argon (I think) for better heat insulation, but maybe there's something to this idea... I'll think about it. – Vilx- Jan 3 at 17:55
  • Opening isn't necessarily a problem, if they don't move very far you can have a flexible cable, or a plug to disconnect the cable from the wall. Double glazing companies can make panels with holes for about $50. – Robin Bennett Jan 4 at 18:11

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