Cold or hot inhalers for dry nose?

A year after rhinoplasty correction of a pierced deviated septum, I still have problems with blockage in the night. It tends to be worse in drier environments (heated home in winter). Someone suggested I use a steam inhaler but I see there are two types on the market - those which emanate hot steam and those with a cool mist. Do you think it could help and which type should I go for - hot or cold? Many thanks.