DIY Doctor UK DIY Forums

Hi guys. I wonder if a Corgi-registered engineer could help?

I have a 10-year old Ferroli Combi boiler in our house (it was fitted years before we moved in). When I had it serviced (for the first time - I've only been here 2 years!) I was told it needs more ventilation. It's housed in a full-height stone cupboard in the kitchen in the centre of the house (so the flue can go straight up and act like a chimney - it used to house an old air-heating boiler). Because there is no outside wall this means I have to add additional ventilation to the kitchen. The kitchen is ventilated (but not enough).

Anyway, while I do need to add ventilation I'm not happy in adding extra draughts into the kitchen. I've been pondering this for a while but I think I've come up with a solution that I'd like to confer with an expert. Can I use the under-floor ventilation directly into the cupboard? This would mean removing a couple of floorboards and boxing it up (so it's flush with the kitchen cupboards and just under the door - there's an air grill in this space already).

Any advice will be greatly appreciated. Hop it all makes sense!

Not really sure what you mean.

You need purpose provided ventilation for gas appliances, if it crosses a void is has to be ducted throughout the length.

Hope this helps.


htg

Thanks for your reply.

What I meant was would it OK to use the underfloor void as ventilation, but as you mentioned it'll need to be ducted then it sounds more trouble than it's worth.

I need 90cm squared of ventilation but don't want a big draft in the kitchen. The door and window are uPVC and below the window is a blank uPVC panel (which has a smaller vent fitted already). Would putting a suitable vent in this panel by alright considering there is a washing machine sitting just in front of it?

Obviously while I want to improve on a poorly ventilated area, I don't want a freezing kitchen in winter (though it could save on running a fridge.....)