The house we bought as a renno project built circa 1953 had the usual wall vents.
Air vent in bedroom wall.
Can hear the road noise through it badly and worse i think next.
Step 1 get the right location.
I was thinking of stripping the wall right down to the brick and putting a vapour barrier on and stud the wall out and insulate the wall there is no cavity then plasterboard the wall.
In summer even an interior room with no windows such as a bathroom could have adequate air exchange.
Those and the wall vents were quickly removed and plastered over.
You don t need expensive mechanics duct work or home contractors to ventilate your room in fact you may not need to buy anything at all.
Also i was thinking of opening up the fireplace in the bedroom for ventilation.
Previous owners also fitted vents into the ceilings in the bedrooms they looked like central heating vents but no direct into ceiling.
Your wall air vent can draw air in as well as well as take it out so when you are placing your vent you will need to find a position that is out of the way of kitchen and bathroom this is sometimes not easy for example if you live near a kitchen then the smells can travel for what seems like miles.
How to fit a wall vent.
Air vents in interior walls were designed to let air flow from room to room so that all rooms were properly ventilated.
Cold air used to come rushing in like an arctic blast.