Aprilaire Crawl Space Dehumidifier 70 ppd - Model 1820

The Aprilaire Model 1820 Dehumidifier is ideal for confined crawl space and basement applications.

The Aprilaire Model 1820 Dehumidifier is the perfect solution for controlling humidity in basements or crawl spaces; protecting against structural damage, pests and mold. This model offers the same valuable feature sets available with our existing product line but in a more compact footprint. Built in the USA using quality anti-corrosion components, and includes the best warranty in the industry. With this 5 year bumper to bumper, you can install the Aprilaire knowing that you will have cleaner air, reduced risk of mold, controlled humidity levels, increased energy savings and years of worry free service. The 1820 delivers 70 pints of moisture removal, per day.

Model 1820 features:

  • Removes up to 70 Pints (8 3/4 gallons) of moisture per day!
  • Light Weight – At 56 pounds, the unit is easy to maneuver and position during installation and setup.
  • Perfect for tight spaces — Our compact design (12.5” x 12.5” x 25”) allows you to install humidification solutions in cramped crawl spaces.
  • Digital RH control— Do away with the wide variances typically seen with a mechanical dial and know that the space is being maintained at the desired humidity level.
  • Powerful 200 CFM Blower — Maximum airflow allows for faster and more consistent environmental control in the space.
  • Energy star — Meets Energy Star requirements resulting in an energy efficient unit that minimizes the impact on your utility bill.
  • Wi-Fi external control — The 1820 is compatible with our Wi-Fi dehumidifier control.
  • Includes a built-in, easy to use control.
  • Freestanding (plug and play) or Inlet and Outlet ducted - Ducted with 8" flex duct or hard pipe
  • MADE IN THE USA - Engineered and manufactured in Madison, WI, USA


Aprilaire Dehumidifiers reduce overly humid conditions to help protect furnishings and belongings from warpage, mildew and rot.

Inhibits Unhealthy Conditions

Reduces growth of allergens like mold & mildew and dust mites.

Increases Comfort

Get rid of that sticky, cold clammy feeling and musty smells.

Other Aprilaire Dehumidifiers

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