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Old box ventilation system in 1960's property

Postby Terminatrix » Tue Oct 05, 2021 11:29 am

Hello everyone!

I own a house built around 1960 and it has these ventilation boxes on the wall. A larger one in the living room, which is wired into the mains and blows fresh air into the house (see 1st pic below). And then 3 smaller units in the bedrooms that are mounted higher up and don't have any wires or switches (see 2nd pic).

I assume that back in the day, they were just an alternative to opening a window and allowing fresh air in?

Could I simply remove them and place a ventilation grill over them? Does anyone know why the smaller bedroom units have no visible wires or switches? How would they work?

Thanks in advance!

Living room ventilation system.jpg
Living room ventilation system
Bedroom Ventilation system.jpg
Bedroom Ventilation system
Terminatrix
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Postby stoneyboy » Thu Oct 07, 2021 8:59 pm

Hi terminatrix
It is unusual to have the three smaller vent boxes. It’s probably worth removing the four screws and see what is “in the box”.
Regards S
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