LGR Dehumidifier for Damp Basement During Rainy Season

Using an LGR (Low Grain Refrigerant) dehumidifier in a damp basement during the rainy season is an excellent choice. These units are highly efficient at removing moisture, even in cool, high-humidity environments like basements. 

Why LGR Dehumidifiers Are Ideal for Basements

High efficiency: Removes more moisture than standard units, especially in humid, low-temperature conditions.

Low grain: Reduces humidity to a lower absolute moisture level, crucial for mold prevention.

Built for restoration: Durable and powerful for ongoing use in challenging environments.

Setup Guide for LGR Dehumidifier in a Basement

1. Choose the Right Size

Small basements (<1,000 sq ft): Look for restoration dehumidifiers that remove 70–90 pints/day.

Medium–large basements (1,000–2,500 sq ft): Go for 110–130+ pints/day capacity (AHAM-rated).

Recommended models: Preair LGR85, LGR85L (vertical), LGR105, LGR155, LGR165L (vertical), WH (whole-home models).

2. Proper Placement

Place the LGR dehumidifier in the center of the room or near the dampest area.

Keep at least 12–18 inches of clearance on all sides for proper airflow.

Don't place it directly against walls or furniture.

3. Set the Humidity Level

Ideal humidity: 45–50% RH

Most LGR dehumidifiers have a built-in humidistat—set it and let it run automatically.

Use a separate hygrometer to monitor RH accurately.

4. Drain the Water

Connect a drain hose and run it to a floor drain or sump pump.

For basements without a drain, use a condensate pump to move water upward and out a window or sink.

5. Run Continuously During Rainy Season

LGR units are designed for continuous operation.

Don't turn off the unit just because things feel dry—basement humidity can spike quickly with rain.

6. Pair with Fans or Air Movers

Use air movers to circulate dry air around the room, helping the dehumidifier work faster.

Prevents "dead zones" where dampness can linger.

7. Maintenance Tips

Clean or replace filters monthly.

Check for kinks in the hose or clogs in the drain system.

Wipe down coils and vents as needed.

Preair is a professional dehumidifier manufacturer that provides high quality efficient dehumidifiers for sale. Please get in touch with us if you need bulk dehumidifiers.

Warning Signs You Need an LGR DHU ASAP:

Musty smell;

Visible condensation or mold;

Sticky air or clammy surfaces;

Warping wood or flaking paint.