Humidifiers
Deliver more with the industry leader - Aprilaire
Automatic Digital Control Humidifiers
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| Model 700A | Model 600A | Model 500A | Model 400A |
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| Powered Unit | Large Bypass | Small Bypass | Large Bypass Drainless |
Designed for your customer
- The upgraded Automatic Digital Control provides comprehensive information to the homeowner.
- Relative humidity percentage
- When unit needs service
- When unit needs maintenance
- When unit is on and operating properly
- Set-it-and-forget-it control ensures maximum comfort throughout the home - every hour, every day, all season long.
- The attractive housing color - a light blend of blue and gray creates a subtle presence in the installed environment.
- Delivers perfectly humidified air to every room of the house, minimizing cold triggers, dry, itchy skin and static shocks.
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For some homes, a manual control may be recommended. The Aprilaire digital control can be used in manual mode. Still providing all the great benefits of the Automatic control that your customer wants:
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Built for you
- Reduced nuisance calls - control tells homeowners when service is required.
- Research indicates that 84% of customers would choose digital control and are willing to pay up to $70 more for the upgraded features provided by Aprilaire. With 98% of households in need of a humidifier, that means bigger profit margins in an untapped market.
- Both the unit and the control were specially designed for easy installation - the easiest in the industry. Limited tools and parts make the job simple, saving you valuable time and money. The control panel requires only a simple 3/4-inch drill bit and no tin snips.
- Service codes on the digital display of the control panel allow your customers to communicate with you more clearly, saving time on service calls.
- When customers know exactly when a water panel replacement is needed, they'll call you for product installation, giving you another opportunity to assess their indoor air quality needs.
Steam Humidifiers
The Need for Precise Humidity Control is Widespread.
Many businesses have valuable inventories and specific processes that require protection. Most businesses rely significantly upon electronics to conduct day-to-day operations and all strive to increase employee productivity. Insufficient humidity levels in the workplace, however, can present significant roadblocks.
The light commercial solution is steam humidification from Aprilaire.
Your customers need a humidification system that is designed with their applications in mind. A steam system will provide them the capacity and precise humidity control they need. You need a humidification system that is built with you-the contractor-in mind. A steam system will provide you easy installation and maintenance, and will reduce service callbacks by maintaining accurate control of your customers' humidity needs. You and your customers need Aprilaire.
Aprilaire Steam Humidifiers are built to last.
Through extensive research and over 50 years expertise in humidification control, Aprilaire has incorporated superior design features into each of the three models of Steam Humidifiers:
- Model 1150: 12 lb/hr unit featuring on/off control
- Model 1160: 24 lb/hr unit featuring a modulating output designed to regulate the output of the humidifier based on the humidity need in the building
- Model 1180: 48 lb/hr unit featuring a modulating output designed to regulate the output of the humidifier based on the humidity need in the building
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A complete humidification system in a single box-ready to ship now.
Both full self-contained units come with everything needed for installation:
- Steam Humidifier
- Automatic Control
- Air Flow Proving Switch
- Steam Distribution Tube
- 10 ft. Flexible Steam Hose
Optional Components:
- Hanging Bracket Kit
- High Humidity Limit Switch

Aprilaire helps you make opportunities happen.
Add a profitable new line to your company with Aprilaire's new Steam Humidifiers. Ask your Aprilaire distributor, or call 800-334-6011 for more information.
Commercial Humidification Calculation Software
Use this (Windows) software to determine the Aprilaire Humidifier that's perfect for your application - (HumidCalcSoft.exe). 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
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 "Order Literature" button to the left to request bulk quantities of pre-printed brochures. If you're waiting for your order or just need one immediately, feel free to print from the selection below.
- Aprilaire Automatic Humidifiers - Six page brochure covers residential line of humidifiers - (186.pdf)
- Humidification Facts For Total Indoor Air Comfort - Twelve page booklet - (105.pdf)
- Aprilaire Humidifiers Models 350 and 360 Self Contained - Independent Series - (135.pdf)
- Aprilaire Model 350/360 Sales Sheet (350-360.pdf)
Current Residential Manuals
- Aprilaire Humidifier Model 700M and 700A Safety and Installation Instructions Template
- Aprilaire Automatic Humidifier Model 400A Safety and Installation Instructions Template
- Aprilaire Humidifier Model 500M and 500A Safety and Installation Instructions Template
- Aprilaire Humidifiers Model 350 Installation Manual
- Aprilaire Humidifiers Model 360 Installation Manual
- Aprilaire Humidifier Model 600M and 600A Safety and Installation Instructions Template
- Aprilaire Manual Humidifier Control Safety and Installation Instructions
- Owner's Manual Model 350, 360, 400A, 500A, 500M, 600A, 600M, 700A and 700M
- Aprilaire Automatic Digital Humidifier Control Safety and Installation Instructions
- Aprilaire Automatic Digital and Manual Humidifier Control Operating Instructions
- Aprilaire Humidifiers Service Manual
Non-Current Residential Manuals
- Aprilaire Humidifier Model 500 Safety and Installation Instructions Template
- Aprilaire Automatic Humidifier Model 600 Safety and Installation Instructions Template
- Aprilaire Automatic Humidifier Model 700 Safety and Installation Instructions Template
- Aprilaire Automatic Humidifier Model 400 Safety and Installation Instructions Template
- Aprilaire Automatic Humidifier Control Safety and Installation Instructions Template
- Aprilaire Humidifier Control Model 56 Safety and Installation Instructions Template
- Owner's Manual for Models 350, 360, 400, 500, 600 & 700
- Owner's Manual for Model 768, 760, 568, 560, 558, 448, 445, 440, 224, 220, 112, and 110
Spec Sheets
Dealer Focused Brochure
Parts Lists
- Residential Humidifiers- Includes Model 400A, 500A, 500M, 600A, 600M, 700A, 700M
- Residential Humidifiers - Includes Models 350, 360, 400, 445, 445A, 448, 550, 550A, 558, 560, 560A, 568, 600, 700, 760, 760A, & 768
Service Bulletins
Articles
Light Commercial Humidifier Manuals
- Steam Humidifier Installation, Operation, and Maintenance Manual for Models 1150, 1160, and 1180
- Automatic Steam Humidifier Control Safety, Installation, and Operation Manual
Contractor Literature
Specification Sheets & Submittals
Wiring Diagrams
- Steam Wiring & Utility - Shows simple wiring for typical installations
- Steam Wiring & Utility with Blower Control - Shows simple wiring for when the humidifier should activate the blower upon humidification calls
- Steam Wiring & 8570 - Shows wiring a transformer to the 8570 when connecting the Steam Humidifier Control
FAQs
Non-Current Light Commercial Literature
- Commercial Humidification Calculation Worksheet
- Model 1120, 1130, 1140 Parts List
- Evaporative Humidification - Light Commercial Applications
- Model 1120 Self-Contained Humidifier Submittal Sheet
- Model 1120 Self-Contained Humidifier Spec Sheet
- Model 1140 Humidifier for Standalone Furnace Spec Sheet
- Model 1140 Humidifier for Standalone Furnace Submittal Sheet
- Model 1130 Bypass Humidifier Submittal Sheet














