Aww thanks Rivlas thats really sweet but I think we'll be ok ....

I just googled heating and your right if you have bowls of water out it will draw from that not from the moisture in the air so that will help - points for thinking

Lu - Cleaned all the filters a weeks or so ago so not that...

I wonder if I used 2 x steamers and then had some bowls of water around the place because at the end of the day wouldn't ANY type of heating that has a fan dry out the air??