Dehumidifier – Aprilaire 1850

Item:  AP1850



Aprilaire 1850 Dehumidifier (includes adapter kit)

The Aprilaire 1850, as part of the ATMOX system, offers the best crawl space moisture control system through the use of smart ventilation and dehumidification. The dehumidifier is effective in quickly reducing moisture levels within the crawl space. This is particularly true in areas with high levels of heat and humidity as seen in the Southeast. In larger crawl spaces, a dehumidifier may have difficulty drying out far corners away from the unit. To solve this problem, use the ATMOX internal fans with the dehumidifier to assist air movement to the unit to increase the drying reach. You don’t want to dry out the area near the dehumidifier but neglect the other parts.

The Aprilaire 1850 is in stock and available to ship. Contact us for pricing and ordering.


Energy Efficient

ATMOX product design emphasizes energy efficiency because moisture control systems should be effective and inexpensive to operate. Dehumidifiers typically have high energy usage. However, with the use of the ACE Controller, the dehumidifier will run only at optimal times. Both vented and encapsulated crawl spaces can benefit from an ATMOX system.

The Aprilaire 1850 Dehumidifier is designed to dehumidify the air coming into the unit. The incoming air passes over an evaporator coil to drop the air temperature below the dew point of the air and remove the moisture from the air and drain it out of the unit to a common floor or waste drain. This unit has a large capacity water removal of 95 pints per day. In addition, there is an auto restart that allows the unit to automatically restart after a power outage.

Dehumidifier pump kits drain the condensation for the dehumidifiers. The pump kits are available through ATMOX and compatible with the Aprilaire dehumidifiers.

ATMOX is a reseller of Aprilaire dehumidifiers. However, only dehumidifiers purchased directly from ATMOX include the ATMOX Adapter Kit.

Contact us for pricing or additional product information.


  • 95 pints/day at 80 degrees F
  • Dimensions: 12.5 x 14.5 x 27.5 inches
  • Operating Temperature: Minimum of 50 degrees F and Maximum of 104 degrees F

Spec Sheet – Aprilaire 1850 Dehumidifier