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We have a house that was built in 1937 in Toronto. It is a double brick design. On one of the outside walls, I can see what appears to be a single-brick-sized vent and I don't know what its function is.

At first I thought it may be an air brick but after further investigation, I found that there is what looks like a cleanout on the inside wall in the same place as the vent is on the outside wall. Additionally, there seems to be a 1" pipe that runs down to the basement from the vent The pipe is capped in the basement. The previous owner said he capped it because water was coming into the basement via this pipe. I also know that there was a washer and dryer in the same area in the basement in this location previously.

Does anyone know what this vent, cleanout, and pipe may be for? It seems too small a diameter for a dryer vent.

EDIT: Brother suggested it may be a vent for an old oil tank. Possible?

EDIT: Added annotated image. Vent pictures

EDIT:

Added individual photos. The vent Possibly the cleanout The end of the pipe in the basement that I suspect is connected to the vent Cheers!

  • Hello, and welcome to Stack Exchange. A picture of either end would be really helpful. – Daniel Griscom Aug 4 '18 at 18:58
  • Depending on the size and construction of the vent, possible uses could have been a clothes dryer vent or a chimney stack for a wall hung heater. The 1" pipe could have been for a water line to the outside , a gas line or gas regulator vent line or a pressure relief dump line. – d.george Aug 5 '18 at 10:32
  • @DanielGriscom: Finally added an image to my post. – Maciej Aug 5 '18 at 15:03
  • @d.george If this is a gas regulator vent line or a pressure relief dump line, would the tank that this was connected to have to have been near this line? The furnace room is on the other side of the house from where this vent is. – Maciej Aug 5 '18 at 15:06
  • Very interesting! How do you know the basement pipe is connected to that vent? What does the writing on the basement pipe end say? Is that a cap that blocks it, or just a flange with a through-hole in the middle? – Daniel Griscom Aug 5 '18 at 15:08

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