Combustion Air

[bobbob]

I need to provide some combustion air into a utility room that houses an oil boiler with an open flue. I would prefer not to install an air brick as I would like to eventually replace the boiler with a room-sealed type. As this is a bungalow would it be acceptable to provide some form of ventilation from the soffit into the ceiling of the utility room?

 

[ChrisR]

Assuming its the same as for gas, you could put a duct in to take fresh air fom outside down to low level, and then another out from the top.

 

[COG]

You will only need one vent at high leval unless its a very small utility (less than 5 sq meters), the size of vent will be in your boiler manual,if you have a dryer or extractor in the room you may require more air to compensate

 

[bobbob]

Hello COG, thanks for that reassuring note. I need about 20 sq.in so i guess a 6in diameter duct should do (5in at a push) any idea where I can get some suitable grills which will connect straight onto a duct - preferably white for the inside and brown for the outside ?

 

[breezer]

this is close (pity picture is up side down)

 

[krispy]

breezer
beg to differ but thats a wall fixing kit for an extract unit is it not?
any ventilation opening should also be fixed and non closable.
sorry to quibble

 

[breezer]

i did say "Close"

 

[krispy]

There's "close" and then ther's a fully closing outlet designed to allow air out but not in
O.K I know i'm just being sarkey now

 

[ChrisR]

bes.ltd.uk do quite a good range of venty bits