[sherwes]

The other thing to try is an air purifier. The good ones from Bumos to Babes are expensive though. The brand is IQAir and there is lots of info on the internet about them as well as brochures at Bumps to Babes.

[NYCMel]

we have the Mitsubishi dehumidifiers and Rowenta ones. The Mitsubishi can be an air purifier and we got both at Sogo. yes, leave the air con, but perhaps adjust the temp so it's not so cold? remember that babies sleep better in colder environments.