We've got a hot air furnace with an attached humidifier but in the winter we wake up with dry throats, our aquarium water drops quickly, and our windows never fog up. It seems to me that the humidifier isn't doing anything. The furnace has been serviced recently, the humidifier was cleaned and adjusted but the air still _seems_ dry. Is there something I can to to _test_ the RH in the house?
Chris