Be really careful with humidifiers. I cranked mine up too much and it caused a mold issue in my home, and mold in my home caused me health issues.
We have this whole house humidifier installed in our furnace: https://www.aprilaire.com/whole-house-products/humidifier/mo... It has a remote temperature sensor you install outside, then it automatically adjusts the humidity based on the outside temperature to keep it under the mold-growing level.