Answer by  
                                                                                          kimber18 (514)
                                                            
                          
                          
                                                          Arizona is a dry heat, I can't imagine needing a DEhumidifier, but there will be times you may need some type of Humidifier, to add some humidity to your living space. I find that in the "winter" months static electricity is worse than in "humid" states, and I tend to get mini nosebleeds if I don't have a humidifier.