Kyle Vocaturo, Owner of One Way Air in Florida, says, “In my experiences as an HVAC expert, I think every homeowner should pick up a hygrometer. Well, it keeps track of your indoor humidity levels, which need to stay between 30% and 50%. Keeping humidity in this zone is important for a couple of reasons: It increases your comfort, prevents mold from growing, and will make sure your HVAC system runs smoothly. All this means your system lasts longer and might even reduce your energy bills!”Give this digital hygrometer a try. It can be used on a tabletop or mounted to the wall.