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Raise Revenue by Reducing Basement Humidity

Alert: Portables Recalled

Many brands of dehumidifiers manufactured oversees are affected by a recall.  View all affected dehumidifier models.  If you see one in a customer's home, be sure to point it out! Offer them a better, safer solution.

Aprilaire 1870 Series Dehumidifier

Increased Capacity, World Class Quality, Easy Installation, Quiet Operation, Control Options

Watch the video now!

Model 1870 Installation Manual

Model 1870F Installation Manual

1870 Series Spec Sheet

Model 1870 Owner's Manual

Dehumidifier Product Guide

Quick Start Guide



New install video now available!

An installation video for the 1750A Dehumidifier with the 4857 Living Space Duct Kit.

The video shows a step by step installation in an application where the Dehumidifier is located in an unfinished basement and ducted to a finished space.

Control and Circuit Board Reminder - Please read!


It's a video world!

Humidity control goes both ways, too much or too little, help control both with Aprilaire products!  Use this video as an in-home selling tool in the coastal regions or this video for the rest of the states.

Aprilaire Training Seminars

New Radio Ads!



Model 1830 Model 1850 Model 1850F Model 1870 Model 1870F

Enable your customers to take control of their total comfort, health, and home's sustainability with the all new whole-home humidity control solution from Aprilaire.

Optimal/Most Efficient Solution For Whole-home Humidity Control

“Tight” Home Construction

Homes built with a foam seal, glazing, icynene, and/or other new environmental barriers provide optimum energy efficiency.

In these tighter homes, moisture and VOCs build from washing, cooking, and other activities. There are typically few ways to remove the moisture that is now trapped on the inside.

Air Conditioning Efficiency

Air conditioners are more efficient than ever before, cooling the home quickly with as little power consumption as possible. In tighter homes, air conditioning systems can run on partial load conditions well over 90% of the time, which means less run time, therefore less dehumidification. Overcooling is usually a last resort to get needed dehumidification.

Using variable-speed or advanced air-handling technology to gain additional dehumidification is another option, however, it typically lowers the energy efficiency of the system; a system designed to optimize cooling.

Portable Solution versus Whole-home Solution

Industry leading 5 year bumper-to-bumper warranty

Extreme Durability - 15+ year system life expectancy due to core design improvements as a direct result of continued extensive life-cycle testing, including application of vibrations, frequency harmonics, and forces up to 60g. In addition, Aprilaire dehumidifiers have undergone extensive coastal condition testing on electronics and controls.

Extremely Quiet - averages less than 55 dB; quieter than a person-person conversation

Practical Design

Simply heating and cooling a home is no longer what drives sales in the HVAC contractor’s world. Differentiation is the key to future success. Humidity control is one of the keys to this success as well as what homeowners are requesting. By quoting and installing products that offer a whole-home dehumidification solution, many contractors are thriving in today’s challenging economy.

Thanks to Aprilaire, whole-home dehumidification has become a simple, cost effective and profitable option to just cooling alone. With new energy star “size-friendly” 1830 70 pint model, and introduction of the higher capacity 1850, 95 pint in a smaller cabinet Aprilaire dehumidifiers will fit into attics, crawlspaces, HVAC closets and basement with an easier-to-install, whole-home dehumidifiers offering a range that covers 70 through 130 pint units.

1800 Series

Automatic Humidity Sensing On-board humidity sensing allows for better whole home monitoring and control of humidity. Optional remote living space control can be used to provide additional humidity control accessibility, as well as increased reliability in coastal environments.

Systems Status On-board LED status, providing instant, easily understood feedback / validation on the unit's operation and performance.

Innovative Features

Air Filtration - MERV 8 Washable filter included

Built-in Ventilation

  • Brings in outside air for ventilation of the home to ASHRAE 62.2 2010 standard.
  • In hot, humid climates, supplemental dehumidification of fresh air beyond standard HVAC equipment is recommended.
  • The most efficient means to dehumidify air is upon initial entry into the home instead of after the home is loaded.
  • Monitors HVAC fan run time during cooling and/or heating calls to efficiently ventilate the whole home, and automatically monitor/control the humidity of the incoming air; utilizes dehumidifier and HVAC fan to make up any remaining ventilation required based on chosen set point.
  • Optional outdoor temperature sensor can be used if no fresh air is desired above 100°F or below 0°F (utilizing this will ignore ASHRAE 62.2 2010 standard).

1800 Series

The new Aprilaire 1800 series models are truly an entire dehumidification solution in one box, includes everything you need for base installations.

Added Features
  • Increased Capacity (pints per day removal) in a cabinet that fits through scuttles, under HVAC equipment, or through most crawlspace openings. 12.5"Wide x 14.5"High with 25"Long with the 1830 and 27.5” long with the 1850 model.
  • World Class Quality with e-coated coils, robust end-of-line testing, and an industry-leading warranty policy.
  • Easy Installation with an integral digital control that walks through set up, positive pressure no p-trap, integrated back flow dampers, with top or front discharge.
  • Control Options on all units include a digital LCD integrated into every unit with intuitive RH set points and optional external controls, including remote RH monitoring.
  • Plug-in Terminals - easy quick outside wiring to board
  • MERV 8 Washable filter
  • Light weight - one person transport
Components included with the Model 1830, 1850 and 1870:
  • Backflow damper - attached to the duct collar - no additional install time
  • Blower activation controls
  • Adjustable outlet options - duct collar is adjustable for top or side discharge application

Optimal/Most Efficient Solution For Whole-home Humidity Control

Aprilaire Central Dehumidifiers monitor conditions 24-7, ready to tackle the toughest humidity conditions within the home at any time.

  • During partial load conditions, often prevalent within the home
  • During those days and times where there is not a need or call for cooling:
    • Spring and Autumn months
    • Cloudy and rainy days
    • Nighttime and morning hours
  • When high humidity is an issue/problem in specific areas of the home
  • When dependable, reliable 24-7 humidity control is critical to the health of your family

Using an Aprilaire Central Dehumidifier independently as well as in conjunction with your existing central air conditioning system optimizes the overall dehumidification of your home as well as the energy efficiency of your cooling system.

Optional Accessories

  • Model 76 Living Space Control
  • Model 8052 Temperature Sensor
  • Model 6506 6" Ventilation Damper
  • Model 4856 Condensate Pump
  • Model 5442 Basement/Zone Kit (2-10” N/O Dampers, 2-10” N/C Dampers & 1 Transformer)

The best solution to humidity problems in your basement.

The Aprilaire Model 1850F Free Standing High Capacity Dehumidifier: basement use.

  • More capacity
  • More efficiency
  • More convenience

Excess humidity in the air can cause basements to be smelly, musty and noticeably damp. Nobody wants to go there, play there, be there. Excess humidity can damage basement furniture and furnishings, causing wood to swell and fabric to rot. Stored items grow mildew and wall paneling peels.

High basement humidity can lead to health-threatening conditions too. Any basement with relative humidity regularly above 60% can become the perfect breeding ground for a variety of pathogens like molds, mildew and fungi. Dust mites, another leading allergen, need as little as 50% relative humidity to thrive and infest your home.

Common portable dehumidifiers are a weak answer. They don't perform well in cooler basement environments and you typically need more than one to treat your entire basement.

Commercial Dehumidification Calculation Software

Use this (Windows) software to provide an estimate of the amount of supplemental dehumidification required for your application. - (DehumidCalcSoft). This is an EXE file. Right click and choose "Save Target As." When the download is complete, find the file on your computer and double click on it to install. If you choose to install this software after download, please note that NO information is collected or shared during installation or while the program is resident on your computer. It is simply a stand-alone program that we hope you'll find informative and useful.

Consumer Literature

Consumer literature is available for you to download. To order high quality literature in quantity, contact customer service or become a Partner In Comfort member.

We produce free, high quality consumer literature for you to share with your customers. For regular distribution and use, we ask that you use the "Request Literature Form" to order bulk quantities of pre-printed brochures. If you're waiting for you order or just need one immediately, feel free to print from the selection below.

Specification Sheets


Parts Lists

Special Bulletins

Contractor Sales and Reference Materials

Consumer Literature

Non-Current Manuals

Non-Current Literature