Whole House Dehumidifiers for Damp Winters

Installing a whole-house dehumidifier is an excellent solution for managing indoor humidity during damp winters, especially if moisture issues are widespread across the home. Here's a guide to choosing and using a whole-house dehumidifier in such conditions:

 

Why Choose a Whole-House Dehumidifier for Damp Winters?

Comprehensive Coverage:

Under house dehumidifiers control humidity throughout the entire home, including basements and attics.

Integrated Functionality:

A dehumidifier with fresh air intake often connects to your HVAC system, working seamlessly with heating systems.

Energy Efficiency:

Maintains consistent indoor humidity levels, reducing the strain on heating and cooling systems.

Prevention:

Prevents condensation on windows, mold growth, and structural damage caused by excess moisture.

 

Key Features to Look For a Good Whole House Dehumidifier

Cold Weather Compatibility:

Choose a model designed for low-temperature operation with features like:

Automatic defrosting.

Insulated components to prevent freezing.

Humidistat Integration:

Built-in controls or compatibility with a smart thermostat to monitor and adjust humidity levels (ideal range: 40–50%).

Capacity:

Measured in pints per day; select a model based on your home's size and moisture levels.

Small homes (1,000–2,000 sq. ft.): 50–70 pints/day.

Medium homes (2,000–3,500 sq. ft.): 90–120 pints/day.

Large homes (3,500+ sq. ft.): 120+ pints/day.

Energy Efficiency:

Look for Energy Star-rated models to reduce long-term operating costs.

Filtration System:

Some models include air filtration to improve air quality alongside humidity control.

 

Top Applications of Whole House Dehumidifiers

Basements: A whole basement dehumidifier controls humidity where cold temperatures and dampness are prevalent.

Whole-Home Comfort: Maintains consistent humidity in living spaces during the winter when ventilation is limited.

Health Benefits: Reduces allergens like dust mites and mold spores for improved air quality.

 

Installation Tips for Whole House Dehumidifiers

Professional Installation:

Whole-house dehumidifiers require integration with your HVAC system, which typically requires a professional setup.

Ductwork:

Ensure your ducts are well-insulated to prevent heat loss and condensation.

Drainage System:

Include a continuous drainage option to channel collected moisture directly to a drain, avoiding manual emptying.

 

Recommended Models for Winter Conditions

PREAIR WH70:

Capacity: 70 pints/day.

Features: Built-in humidistat, Energy Star qualified, suitable for basements.

PREAIR WH95:

Capacity: 95 pints/day.

Features: Compact design, auto-defrost, high-efficiency.

PREAIR WH135:

Capacity: 135 pints/day.

Features: Operates efficiently in low temperatures, robust filtration.

 

Additional Tips for Optimal Use

Set Humidity Levels Properly:

Aim for 40–50% during the winter to prevent over-drying the air.

Pair with Heating:

Dehumidifiers work best in conjunction with a heating system to maintain warmth and dryness.

Inspect Regularly:

Check filters, drainage lines, and performance periodically to ensure efficiency.