One of the areas of your home that may have humidity problems is your garage. If this is the case you will need a garage dehumidifier to help handle the problem and reduce the chance that mold will grow and cause damage.
I think that you need a dehumidifier in your garage especially if the garage is a detached garage. When the garage is part of the house, basically, it can have some “climate control” due to the connection to the house.
Some examples of having excess humidity in your garage are on those hot and humid days in the summer, the humidity can get trapped inside the garage. Then in the winter you drive your car right into the garage with wetness like rain or snow and the snow is filled with salt and muck and grime from the road.
You may or may not have a floor drain in your garage. So where does this moisture all go? Into the air and onto everything stored in the garage. If this humidity is not reduced and kept to a manageable level it can cause mold and mildew to grow and cause metal parts or shelving to rust.
Getting a garage dehumidifier is not the only way to reduce the amount of humidity in your garage. Sometimes all it takes is proper ventilation. Set up a fan and if your garage has a window in it, open it. Let the fresh air come in and be moved around by the fan.
In the winter, You could buy a small space heater for your garage to help keep it warm and basically “burn off” excess moisture or you can splurge a little and have a garage heater installed up in one corner of the garage. The heat will help dry up any extra humidity right along with keeping the air warmer for your car, too.
Humidity can also be controlled a little better if there is adequate insulation inside of your garage. Insulation is needed to help maintain a constant temperature inside your house so why not use the same idea inside of your garage?
Maintain humidity levels in your garage by using proper ventilation, if possible, space heaters or garage heaters, and make sure your garage is well insulated.
If you are just building your garage or are in the process of remodeling your old one then you might consider placing a moisture barrier on the walls of your garage. These materials can drastically reduce the amount of moisture that gets in the garage.
They are called Vapor Barriers for a reason. The keep the moisture that can permeate the walls away, therefore, keeping the damage that can be caused by that moisture to a minimum.
Materials like plastic sheeting, stainless steel, aluminum sheeting, and reinforced hard plastics are all used for and are very effective moisture reducers. These are just some of the ways you can decrease the amount of the humidity in you garage without having to purchase a garage dehumidifier.