As a general note, we can say there are four types of dehumidifiers. They are heat pump dehumidifiers, ventilating dehumidifiers, homemade dehumidifiers, and chemical absorbent dehumidifiers. All the above said dehumidifiers are using to maintain the relative humidity level of the room into the required standard level. Out of the above we can select the best humidifier that can meet the purpose of the utility matching close to the requirements.
Dehumidifiers can also further be classified as per the usage scope of the appliance. As per the scope, the dehumidifiers are further classified into the portable humidifier, basement humidifier, and whole home dehumidifiers.
Portable Dehumidifier: Portable dehumidifiers are small appliances that are weighing less than 100 pounds. It can be easily moved from one room to another room. A portable unit with a humidistat is always good because by using the humidistat you can check the relative humidity status and do the setting as per the requirements. If there is no humidistat is attached to the unit, use a hygrometer to check the relative humidity status.
Basement Dehumidifier: Basement humidifiers are good for using in high humidity location or high presence of mold especially seen in the basement of the home. Most of the base dehumidifiers are also portable. However, specially designed basement units are also available, and that can be used in the basement permanently. Basement dehumidifiers should have direct drain off hose to avoid checking water tank level every now and then.
Whole Home Dehumidifier: These are the ideal dehumidifier for your home that can take care of your entire home dehumidifying requirement. It will be bit expensive, but it will have advanced features to check the relative humidity conditions and automatic features. Whole home dehumidifiers are highly efficient and can remove more pints of water per day than any other type of dehumidifiers.
Brief description of four general types of dehumidifiers as given as follows:
- Heat Pump Dehumidifier: In heat pump dehumidifier, the appliance work with a heat pump, heat exchange coil, and fan to remove the excess moisture from the air. With the help of the fan, the moisture air is sucked out through the exchange coil. The absorbed moisture air is condensed, and another coil heat up the air and push back the heated air into the room. The process of absorbing moisture condensed air and pushing back reheated air into the room will continue as a cycling action.
- Ventilating Dehumidifier: Ventilating dehumidifier works with an exhaust fan and also mostly fitted with humidity checking features. These types of humidifiers are perfect for using basement rooms and attics.
- Homemade Dehumidifier: The homemade dehumidifier uses de-icing salt to absorb the moisture mixed air. The de-icing salt absorbs the moisture of the air and filters the air. The de-icing salt need to be regularly replaced. During the process of action, the salt start dripping into the bucket placed below.
- Chemical Absorbent Dehumidifier: Silica gels are used in the chemical absorbent dehumidifier. The moisture content air absorbed by the heated silica gel is exhausted out by using a fan. These types of humidifiers are ideal for extremely hot and humid conditions.
For better dehumidifying results, the doors, windows, and all other ventilation areas must be tightly sealed. Also, there should not be any obstruction at the grill portions and coil areas of the dehumidifier. There must be enough clearing area around the dehumidifier for proper air circulation, preferably 6 to 12 inches. Selecting a best humidifier is always depending on the CFM and ACH numbers of the room!