How to Lower Humidity in Your House Without an AC
Before I purchased an inexpensive ultrasonic humidifier to raise the relative humidity (RH) in my apartment, I would have a 8-liter stainless steel stock pot filled with tap water and heated to just below boiling. This method raised my electric bill noticeably. The ultrasonic humidifier puts 8 liters of water into the air each day and has raised my apartment's RH to acceptable levels. Note that air conditioners inherently reduce RH, removing water from the air.
Consider a Dehumidifier
A dehumidifier is the most effective tool for managing your home's humidity. A dehumidifier removes water from the air in your home until the relative humidity reaches the level that you have chosen. Once it has reached that level, a quality dehumidifier should automatically maintain that comfortable level with no need for adjustments from you!
Choose the Right Type of Dehumidifier
Ensure you get a vent hose that takes that humidity all the way outside. You don't want to blow that humidity into your home, which could affect your interior climate. Additionally, ensure the vent is placed in a location where it won't be affected by pests like squirrels. Other types of fans are not as effective for dehumidifying purposes.
Non-Mechanical Dehumidification Options
Technically, anything that removes moisture from the air is a dehumidifier. Non-mechanical options include dishes of baking powder, talc, or cornstarch. However, these are usually less effective. It's important to identify the source of the humidity. Fixing leaks or replacing plain insulation with moisture barrier insulation can solve the problem once and for all. Running a heater or a cooler will usually work as well.
Special Considerations
If you have an indoor pool, a very large fish tank, or a fountain, or a ton of plants, it’s going to be hard to get rid of the humidity. A few small fish tanks or tabletop fountains here or there won’t matter, but anything excessive could. Additionally, if you live in a humid climate, your space is going to get humid again every time you open a door or window, or if your building is not hermetically sealed.
Increasing Heat to Lower Humidity
Increased heat can lower the humidity in your house, but this can be expensive and energy-intensive. Chemical dehumidifiers can also be an effective option for removing moisture from the air. An air conditioner is an incredibly effective way to passively remove water, making it a great choice if you have moderate humidity levels.
For most homeowners, a dehumidifier is the best solution for managing indoor humidity, especially if an air conditioner is not an option. These devices can help maintain a comfortable and healthy living environment without the need for constant adjustments. Remember to choose the right dehumidifier based on your specific needs and ensure proper installation to maximize its effectiveness.