Mini split systems are efficient, quiet, effective, and affordable; but can they remove moisture?How Dehumidification Effects Your Comfort
Yes, in fact they do remove moisture from indoor air; and they can do so in different ways, depending on your preference.
Just like any air conditioner, mini splits remove moisture during the cooling process.
However, unlike typical central air conditioners, mini splits also offer what many manufacturers refer to as a "dry mode" to remove moisture when cooling isn't necessary.
Think of a hot, muggy day where the heat and humidity outside seems to stick to your skin. Humidity makes heat even less bearable.
In a less humid environment, you will feel more comfortable even if the air is warmer. High humidity can make it more difficult to breath, harder for your body to cool itself, and can encourage the growth of allergens, bacteria, and mold. Reducing humidity means you can stay comfortable with your thermostat set a bit warmer, allowing you to save even more money.
Keeping air dry will make it easier to breathe, reduce the chance of mold growth, all while keeping your home more comfortable. It's a great way to improve all aspects of your indoor atmosphere.
How Mini Splits Dehumidify While Cooling
While in cooling mode, warm indoor air is drawn over a coil that's filled with cold refrigerant. The refrigerant absorbs the heat from the indoor air, dramatically reducing its temperature.
As its temperature decreases, the air becomes less capable of holding moisture. The water in the air condenses into a liquid, like the moisture on the outside of a cold glass of ice tea on a humid day, and separates from the air moving across the coil.
The moisture that's removed is referred to as condensate
, and needs to be drained to a suitable location, sometimes with the aid of a condensate pump
How Condensate is Removed From Mini Split Units
Dry Mode Dehumidification
In addition to removing moisture during cooling operation, most mini splits offer another handy mode for drying the air in your home. If you're comfortable with the temperature inside, but would like to lower the humidity, you can switch the indoor unit to dry mode
Dry mode works in very much the same way as cooling mode, except the fan speeds are much, much lower. This means the air is moving more slowly over the coil, allowing for more moisture to be removed.
While running a unit in dry mode may actually reduce your indoor temperature slightly, it's an effective way of removing humidity without converting your home into a frozen tundra.
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