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Aprilaire 1770A Whole House Dehumidifier

Aprilaire 1770A Whole House Dehumidifier

Model: 1770A | SKU: ap2592
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Price: $1699.95
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  • Product Overview

    Keep your entire home healthy, comfortable, and mold-free with the Aprilaire 1770A Whole House Dehumidifier. The 1770A is rated to remove 135 pints of damaging moisture per day under AHAM conditions (80 degrees F, 60% relative humidity) and covers large homes up to 2,900 square feet. The dehumidifier works with your HVAC system to dehumidify all of your rooms evenly and efficiently, unlike portable dehumidifiers that may cover limited areas. With just one system, you'll keep your home comfortable and protected against damaging mold.

    Flexible Installation

    The Aprilaire 1770A Dehumidifier installs as part of your central HVAC system and is typically located in your basement or attic. As your system runs, the dehumidifier pulls air in using the return ducts, dehumidifies it, and sends dry air back into your rooms. Two 8-inch duct collars are included for ducting air return and supply. The 1770A can also be used as a standalone dehumidifier to control humidity in a specific area. For example, you might install it in your humid crawl space or musty basement with or without ducting.

    You can also configure the dehumidifier to treat your whole home and then switch to spot dehumidification for areas that need extra humidity control, such as your basement. For this application, you'll need to use the basement kit (sold separately).

    *For proper installation, it's best to consult with a qualified HVAC technician.

    Easy Humidity Control

    Take the guesswork out of controlling your home's humidity. The Aprilaire 1770A automatically maintains your set humidity level in true "set it and forget it" fashion. To set it up, program your desired humidity level using the manual dehumidistat. Periodically, the dehumidifier's humidistat samples the humidity level in your home and adjusts dehumidifying speed to maintain that level. This frees you from the hassle of manually adjusting operation based on your own humidity measurements. 

    Additional Features

    Made in the USA

    • Air Cycling - This setting uses your HVAC blower to cycle air throughout your home for balanced humidity.
    • MERV-8 Air Filter – This easy-to-access, washable air filter removes allergens such as mold spores and dust particles while ensuring efficient operation.
    • Auto Defrost Control – In cool conditions, an automatic defroster turns off the compressor and runs the blower until the coils are defrosted to protect the unit from damage.
    • No Water Tank - The Aprilaire 1770A features a drain port to gravity drain collected condensate (drain hose not included). This eliminates the often messy task of emptying a water container.
    • Leveling Feet - Four stabilizing rubber feet are included to ensure proper drainage of the dehumidifier.
    • Ventilation Option - An optional backflow damper can be used to cycle fresh air into your home for more ventilation.
    • American-Made - All Aprilaire dehumidifiers are proudly made in the USA.


    The Aprilaire 1770A Whole House Dehumidifier controls humidity and stops mold damage throughout your entire home.

    What Customers Love

    • Very Efficient - Compared to leading portable dehumidifiers, the 1770A operates up to 4 times more efficiently and removes 50% more moisture per kilowatt hour.
    • Low Maintenance - Wash the filter and clean debris from the drain port and hose once a year to ensure proper operation.

    Things to Consider

    • Drain Location - For gravity drainage, you'll need a nearby drain and vinyl or PVC drain tubing (0.75-inch diameter). If there is no nearby drain, consider using an external condensate pump to pump water to a more ideal location.

    Manufacturer's Warranty

    5-Year Limited Warranty

    Manufacturer's Literature

    Owner's Manual
    User guide for the Aprilaire 1770A Dehumidifier

    What's In The Box?

    • Aprilaire Whole House Dehumidifier (1770A)
    • Two 8-inch round duct collars
    • 8-foot power cord
    • 4 leveling feet
    • Owner's manual
    • Installation manual

    View All Dehumidifiers »
  • Specifications

    Residential UseBasement, Crawl Space, Whole House
    Manufacturer-Stated Capacity135 pints
    Low Temperature Operation (41 degrees F and Under)Yes
    Practical Room Size 2900 sq. ft.
    Energy StarNo
    AHAM-Verified No
    Height20.625 in.
    Width20.75 in.
    Depth24 in.
    Weight100 lbs.
    Water ContainerNo
    Full Bucket Indicator/Auto ShutoffNo
    Internal Condensate PumpNo
    Continuous Drain CapableYes
    Drain Hose IncludedNo
    Humidistat Yes
    Automatic DefrostYes
    Fan Operation Runs Only When Dehumidifying
    Number of Fan Speeds1
    Cubic Feet Per Minute (Max)535 CFM
    Maximum Noise Level55 dB
    Number of Filters1
    Filter TypeMERV-8 filter
    Auto Restart On Power FailureYes
    Refrigerant TypeR-410A
    Maximum Amperage8 Amps
    Voltage110-120 V
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