Too much permenant ventilation = Too Cold

chickster156

Hello All,

I know I need permenant ventilation into my living room because I have a Baxi Bermuda gas fire and back boiler (circa 1970's). But it's blowing a gale- well sort of.

How can I tell if this is over kill without changing it and finding out that it's gonna kill me?

EliteHeat

You could replace the entire vent with a ducted vent with exterior cowling. This should eliminate the draft. It will probably cost about £30.

economiser

We used to have a back boiler (wish we still had - very reliable) and I built my own ducted system under the suspended wooden floor. Grille in outside wall below floor level and grille in floor under front of gas/fire back boiler.

Poppycat

You can get grilled plastic or metal vents that can go over vents that are angled to reduce draughts.

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=100139&ts=99770&id=13616

Will_it_make_me_rich

We have a vent in our living room for the gas fire, it has an angled cowl.
It is also positioned behind the radiator.

chickster156

Hello all,

The tip on a ducting under the floor fits my situation best - cracking idea. Thanks to those that mentioned the grill. I should have said I've got one and it is still chilly willy. The house is a listed building so I need planning permission for anything that changes the outside, so the outside cowling will not help me.

The vent is about 8 foot off floor level so it is probaby designed to let in tonnes of air rather than let out CO. So the floor idea sounds safest, warmest and appropriate.

EliteHeat

chickster156 wrote: »

Hello all,

The tip on a ducting under the floor fits my situation best - cracking idea. Thanks to those that mentioned the grill. I should have said I've got one and it is still chilly willy. The house is a listed building so I need planning permission for anything that changes the outside, so the outside cowling will not help me.

The vent is about 8 foot off floor level so it is probaby designed to let in tonnes of air rather than let out CO. So the floor idea sounds safest, warmest and appropriate.

You misunderstand the requirement for a vent. Its purpose is to allow air (oxygen) in to allow an open flued appliance to burn cleanly without producing any carbon monoxide. It replaces the air that both you and the appliance share.

All vents that are for the purpose of supplying air to a gas appliance have to conform to certain standards. They also need to supply the amount of oxygen needed by the actual appliance.

If you do not know what the regulations are or how much oxygen is needed, then how can you possibly build a safe vent?

Open flued appliances need to be treated with a great deal of respect - they can be killers. I would strongly recommend that you do not proceed with this action.