✔️ What type of dehumidifier do I need? If humidity is a whole-house problem, a whole-house integrated system may be the solution.
If your humidity problems are more seasonal or limited to certain rooms in the house, a portable residential unit is your best bet. Smaller dehumidifiers tend to cost less and may be easier to move around, but may be less efficient when running at a constant rate. It is best to err on the side of caution by buying a larger unit than a smaller one and running the unit less frequently.
✔️ How to choose the right size dehumidifier? The size of your room and its degree of humidity will determine the size of your dehumidifier. Dehumidifiers are sized based on how many pints of moisture they can remove in a day: the larger and more humid your space, the more powerful your unit will need to be.
For example, a 70 pint dehumidifier can cover a very humid area of 700 square feet. Where a slightly damp 1,200 square feet. Keep in mind: If the room is cooler (for example, a basement), the dehumidifier will remove less moisture because cooler air holds less moisture than warmer air.
✔️ What do dehumidifier sizes mean?
- Small: Removes 20-25 pints of moisture at 65°F, or 30-40 pints at 80°F (approximately 400-600+ square feet)
- Average: Removes 30-35 pints of moisture at 65°F, or 50-60 pints at 80°F (approximately 800-1,000+ square feet)
- Big: Removes 40-55 pints of moisture at 65°F, or 70-90 pints at 80°F (approximately 1,200-1,500+ square feet)
✔️ What features are important when buying a dehumidifier?
- Hose connection. If you’re using a large capacity dehumidifier for a particularly wet job, finding a dehumidifier with a hose connection can save you from having to manually empty the machine. If you can’t find one with a hose, look for one that has a pump to send water to a sink or window. Otherwise, you will have to physically (and frequently) empty the collected water.
- A filter indicator reminds you when to clean your air filter.
- An automatic humidistat can sense the humidity in the air and automatically shut off when the desired level is reached.
- Low temperature setting and/or automatic defrosting is useful if the dehumidifier is in a cool location, as it ensures that the unit can function properly in cooler temperatures.
✔️ How can I be sure my dehumidifier is working efficiently?
- Make sure the airflow is not restricted. Some units have vents on the top allowing it to sit against a wall. Others have vents on the sides, which means they shouldn’t be pushed against walls or furniture.
- Clean the air filter regularly. The dehumidifier will not work as well if it is dirty. Be sure to take care of it at least once a week.
- Be sure to unplug the machine each time you empty the container or clean it.
✔️ What do the new testing standards mean for my purchases? In 2019, the Department of Energy (DOE) changed the parameters for measuring the capacity of dehumidifiers. In the past, dehumidifiers were officially tested at 80°F, but as of June 13, 2019, dehumidifiers must be tested at a lower temperature, 65°F, “to more accurately reflect expected performance in a basement” .
This means that a dehumidifier tested according to the new protocols will likely report a smaller capacity. For example, a previously labeled “70 pint dehumidifier” will now likely be considered a 50 pint dehumidifier under the new guidelines. In this overview, all choices reflect these new standards. This means that if you have already purchased a dehumidifier, the original pint size may have been adjusted to the new guidelines, as you cannot compare older units with newer units apples to apples.