Our guest room that will be the nursery is chilly. DH insulated the window today, just to test out if we can notice a difference.

I'm curious how dangerous it is to have an additional heater in the nursery. Also -- on the same note, are humidifiers dangerous? I read an article that said that humidifiers create bacteria that is hazardous to babies a while back and was curious if this is true.

How many of you have a heater and/or humidifier in your LO's nursery?