WARNING! 120 volts may cause injury from electrical shock. Disconnect power and shut off water supply before servicing.

CAUTION! Sudden operation may cause personal injury or property damage. Turn the Aprilaire Humidifier Control to “OFF” or lowest setting before servicing

INTRODUCTION

Thank you for your recent Aprilaire® Humidifier purchase. We sincerely appreciate your business and are pleased to add your name to our growing list of customers. With this purchase, you have invested in the highest quality equipment currently available. Research Products Corporation is the largest manufacturer of whole house humidifiers, air cleaners and fresh air exchangers and is a recognized leader in the heating and air conditioning industry today.

Please be assured that in addition to product quality, we are also committed to unit performance as well as customer satisfaction. Your unit will require periodic maintenance to assure you of continued fine performance. Please proceed as shown on page 7 to obtain service parts and/or replacement Water Panel® evaporators.

Now, please take a few minutes and read the appropriate section of this booklet. This will familiarize you with the benefits you will receive from the equip- ment you just purchased and help you understand the routine maintenance that will be required. Be sure to register your warranty with us for our records and your protection. You may do so by returning the Warranty Information Card to us, or you can register online at: www.aprilaire.com/warranty.

Genuine Replacement Water Panel evaporators are available from your installing contractor or from most other local heating and air conditioning contractors in your area. However, if you still have difficulty in obtaining a replacement Water Panel evaporator, use the dealer locator in our web site (www.aprilaire.com) or look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioning Contractors. Purchase only genuine Aprilaire Water Panels to maintain performance.

© Research Products Corporation 2000

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Aprilaire 448 owner manual Introduction

448 specifications

The Aprilaire 448 is a state-of-the-art humidifier that plays a significant role in maintaining optimal indoor air quality. Designed specifically for homes, this unit effectively combats dryness, ensuring that the air within your living space remains comfortable and healthy, especially during the colder months.

One of the standout features of the Aprilaire 448 is its robust capacity to cover areas up to 4,000 square feet. This means that even larger homes can benefit from improved humidity levels, protecting not just your comfort but also your furnishings and overall air quality. By maintaining an ideal humidity level between 30% and 50%, the Aprilaire 448 fosters an environment that reduces the risk of respiratory issues, allergies, and dry skin.

The unit incorporates advanced technology to facilitate easy operation and maintenance. Equipped with a digital control, it allows homeowners to set and monitor humidity levels effortlessly. The digital display provides crucial data on current humidity levels, enabling users to make informed adjustments. Additionally, the unit features a built-in humidistat that automatically regulates the humidity based on the settings, ensuring a consistent and comfortable atmosphere.

Energy efficiency is another hallmark of the Aprilaire 448. The unit is designed to function quietly, avoiding disruptions in your daily life, while using minimal energy compared to traditional humidifiers. The water-saving design ensures that it operates effectively without excessive water consumption, making it an eco-friendly choice for conscientious homeowners.

The Aprilaire 448 also boasts a self-cleaning feature that reduces maintenance time and effort. This innovation helps to keep the unit free from mineral buildup, which is a common problem in humidifiers, thereby prolonging its lifespan and reliability. Furthermore, the easy-to-replace water panel ensures that users can maintain their humidifier with minimal hassle.

In summary, the Aprilaire 448 is a powerful and efficient solution for maintaining ideal humidity levels in larger spaces. With its advanced digital controls, energy-efficient operation, and low-maintenance design, it has become a preferred choice for homeowners seeking to enhance their indoor air quality. Whether combating the winter chill or addressing dryness during any season, the Aprilaire 448 delivers comfort and health benefits all year round. Its commitment to reliability and performance makes it a wise investment for any household.