Choosing the Right Dehumidifier for Your Space: A Comprehensive Guide

Understanding Your Needs

Before diving into specific dehumidifier types, it’s crucial to understand your needs and environment.

• Space Size: The size of the area you need to dehumidify is the most critical factor. Dehumidifiers are sized by their capacity, typically measured in pints of moisture removed per day (MPD). A larger space will require a dehumidifier with a higher MPD rating.
• Climate: Warm and humid climates typically require refrigerant dehumidifiers, while cooler climates might benefit more from desiccant dehumidifiers (explained later).
• Severity of Humidity Problem: Consider the severity of your humidity issue. If you’re dealing with occasional dampness, a smaller dehumidifier might suffice. However, for chronic moisture problems or basements, a larger unit will be necessary.
• Noise Level: Dehumidifiers generate noise from the fan and compressor. 
• Features: Dehumidifiers come with various features, such as automatic shut-off when the tank is full, adjustable humidity settings, and continuous drain options. Choose features that best suit your needs.

Dehumidifier Capacity: Choosing the Right Size

As mentioned earlier, dehumidifier capacity is crucial for effective moisture removal. Here’s a general guideline to help you choose the right size for your space:

Square Footage	Pints of Moisture Removed per Day (MPD)
Up to 150 sq. ft.	10-20 pints MPD
150-300 sq. ft.	20-30 pints MPD
300-500 sq. ft.	30-40 pints MPD
500-1,000 sq. ft.	40-50 pints MPD
1,000 sq. ft. and above	50+ pints MPD

These are general recommendations. Several factors can influence the ideal MPD for your space, so consider these adjustments:

• Climate: Add 10 pints to the recommended MPD for humid climates.
• Occupancy: Add 5 pints per person who regularly uses the space.
• Ventilation: Add 5 pints if the space has poor ventilation.
• Laundry/Drying: Add 5 pints if a washer/dryer is in or near the space.

Dehumidifier Technologies: Understanding the Two Main Types

Dehumidifiers employ two main technologies to remove moisture from the air:

1. Refrigerant Dehumidifiers (Most Common)

Refrigerant dehumidifiers function similarly to refrigerators and air conditioners. Here’s the process:

• Air Intake: A fan draws in moist air from the surrounding area.
• Cooling Coils: The air passes over cold coils filled with refrigerant. The refrigerant absorbs heat, causing the air to cool down significantly.
• Condensation: As the air cools, its capacity to hold moisture decreases. This excess moisture condenses on the cold coils, forming droplets of water.
• Moisture Collection: The water droplets accumulate on the coils and drip down into a collection tank within the dehumidifier.
• Reheating and Exhaust: The now-dehumidified air passes over a separate set of coils, usually heated by the compressor, to prevent it from feeling uncomfortably cold.

2. Desiccant Dehumidifiers

Desiccant dehumidifiers are better suited for cooler climates where condensation might be an issue. Here’s how they work:

• Desiccant Wheel: The air passes over a rotating wheel coated with a desiccant material, often silica gel. Desiccants are hygroscopic, meaning they have a strong affinity for attracting and holding moisture.
• Moisture Absorption: As the air comes in contact with the desiccant wheel, moisture gets absorbed by the desiccant material.
• Regeneration: The desiccant wheel rotates continuously. One section passes through moist air for absorption, while another section is exposed to a heated air stream. This heat reactivates the desiccant by driving off the absorbed moisture, which is then expelled from the dehumidifier as humid air.
• Dry Air Exhaust: The dehumidified air is released back into the room.

Choosing Between Refrigerant and Desiccant Dehumidifiers

Here’s a quick comparison to help you decide which dehumidifier technology is best for you:

Feature	Refrigerant Dehumidifier	Desiccant Dehumidifier
Technology	Uses refrigerant to cool air and condense moisture	Uses desiccant material to absorb moisture
Ideal Climate	Warm and humid climates	Cooler climates or areas prone to condensation
Efficiency	More efficient in warm weather	Maintains efficiency in all temperatures
Maintenance	Requires regular emptying of collection tank and occasional cleaning of coils	Requires regular filter cleaning and emptying of the collection tank
Cost	Generally less expensive	Generally more expensive

Additional Features to Consider

While capacity and technology are crucial factors, several additional features can enhance your dehumidifier’s functionality and convenience:

• Automatic Shut-Off: This feature automatically shuts off the dehumidifier when the collection tank is full, preventing overflows.
• Adjustable Humidistat: This allows you to set your desired humidity level and the dehumidifier will automatically cycle on and off to maintain that level.
• Continuous Drain Option: This eliminates the need to empty the collection tank frequently. A hose can be attached to continuously drain the collected water.
• Heater: This feature helps prevent the dehumidified air from feeling too cold, especially in conjunction with refrigerant dehumidifiers.
• Air Filter: Some dehumidifiers have built-in air filters that trap dust and allergens.
• Timer: This allows you to program the dehumidifier to run for a specific time period.
• Noise Level: Look for models with lower decibel ratings for quieter operation.

Beyond Capacity and Technology: Essential Maintenance Tips

Proper maintenance is essential for optimal dehumidifier performance and longevity. Here are some key tips:

• Empty the Collection Tank Regularly: Empty the water collection tank frequently to prevent overflows and potential mold growth within the tank.
• Clean the Air Filter (if applicable): Most dehumidifiers have washable air filters that trap dust and debris. Clean them regularly according to the manufacturer’s instructions.
• Clean the Coils (Refrigerant Dehumidifiers): For refrigerant dehumidifiers, gently clean the evaporator and condenser coils with a soft brush to remove dust buildup that can hinder airflow and efficiency.
• Proper Storage: When not in use, store your dehumidifier in a clean, dry place. This prevents mold growth within the unit during storage.

Conclusion

By understanding your needs, space size, climate, and desired features, you can choose the best dehumidifier to create a more comfortable and healthy living environment. With proper maintenance, your dehumidifier will effectively remove excess moisture, prevent mold growth, and protect your belongings for years to come. You can buy the best dehumidifiers at affordable rates on our website. 

FAQ

1. How do I calculate what size dehumidifier I need?

Ans. To determine the appropriate size of a dehumidifier, start by measuring the square footage of the area you want to dehumidify. Multiply the length of the room by the width. Then, use a hygrometer to gauge the relative humidity in the room. Based on these measurements, you can select a dehumidifier with the capacity suitable for your space.

1. What is a recommended dehumidifier?

Ans. Consider Honeywell’s Smart WiFi Energy Star Dehumidifier as the top choice. It not only boasts an appealing design but also effectively removes moisture from the air. After just one use, noticeable improvements in air quality were observed.

1. What is the ideal room humidity for a dehumidifier?

Ans. For optimal performance, manually set your dehumidifier’s humidity level between 30% and 50%. This range helps prevent excessive moisture that can lead to dampness and mold growth, while also avoiding overly dry conditions that promote bacterial growth.

1. How many dehumidifiers per square foot?

Ans. In general, a 10-pint dehumidifier can handle up to 500 square feet of slightly to moderately damp spaces. For larger areas, such as 1,000 square feet, opt for a 14-pint unit. Similarly, for 1,500 square feet, consider an 18-pint dehumidifier, and adjust accordingly based on your space’s needs.