Every home needs a humidifier.

Cure indoor dryness and get the very best whole-home comfort.

The air inside your home is drier than you think. Heating your home dries out the air. The resulting dry air absorbs moisture from you and everything inside your home. Even newer, tighter built homes will succumb to the negative effects of air that is too dry.


When you heat your home, indoor humidity levels fall below the optimum range. This causes you to experience the discomforts of too dry itchy skin, annoying static shocks and being “too cold” at normal temperatures.


Viruses thrive in low humidity conditions and can actually increase the likelihood of getting colds, flu and other upper respiratory aliments. The American Society of Otolaryngology advises the importance of preventing an overly dry environment because it significantly increases susceptibility to infection.


When heated air isn’t properly humidified, it causes walls and ceilings to crack and wood floors and trim to separate. Expensive musical instruments can go out of tune and electronic equipment can fall victim to static electric charges, requiring expensive repair or replacement.


Dry air robs the moisture from your skin, making you feel colder, which means you turn up the heat. Dry air also shrinks the framing around doors and windows, resulting in gaps that let in cold air from the outside, making your home less energy efficient.

Your home could be as dry as the Sahara Desert!

Relative humidity (RH) indicates the amount of water vapor, in percent, actually in the air compared to the maximum amount that the air could hold under the same conditions. The warmer the air, the more moisture it can hold.

Air in the home heated to 70 degrees Fahrenheit can hold about eight grains of moisture per cubic foot. That is 100% RH. If there are only two grains per cubic foot in the home, this is 1/4 of the air capacity or 25% RH.

So, what happens to the air when it’s heated? Your furnace will bring in outdoor air to be heated. During the winter months it’s very common to find outdoor RH at 70% and air temperature at +10 degrees Fahrenheit, the indoor RH drops to 6%, this is similar dryness to desert conditions. The only solution is to add water vapor to the air – humidification.

Enjoy the benefits of whole-home humidification.

Humidification, the process of adding moisture to the air, is one of the most important aspects of total indoor comfort, yet it’s one of the least understood. One reason is that humidity is an intangible. It can’t be seen, touched, or smelled. It has no color, no sound. However, its presence, when controlled properly, offers many proven benefits.


Heating your indoor air dries out your skin. This not only makes you feel itchy but can also make you feel chilly.

This cold effect is not the only discomfort caused by too dry air. Annoying static electricity is another indication of low humidity levels. Proper relative humidity (RH) will reduce this discomfort.

Aprilaire whole-home humidifiers provide maximum comfort throughout your entire home – every hour, every day all season long, without the mess and inconvenience of portables.


Air that is too dry can make you more susceptible to catching cold or flu viruses. How? Dry air dries out your nasal membranes and makes the lining of your nose more susceptible to bleeding and infections. Also, low levels of humidity have been linked to the speedier progression and transmission of viruses in the air.

Proper humidity is a key factor to staying healthy in winter. By keeping your sinuses and airways moist, you reduce the potential for bacteria and viruses to enter your body/ Aprilaire humidifiers are proven most effective at providing optimum levels of humidity.


The addition or reduction of moisture drastically affects the qualities, dimensions, and weights of many materials.

For example, wood, leather, paper, and cloth all contain water. Paper, plastic, cloth, fibers, glue, skin and practically everything else in the home shrink as the lose water, and swell as they take on water. If the water loss is rapid, warping and cracking can take place. As the RH changes, the condition and dimensions of the materials change, as constantly as the weather. This is why humidity must be added and controlled.

Furniture construction is affected as glue dries out, joints separate, and cracks appear. Plaster and drywall dries out, pianos, organs, and other musical instruments lose their tone. Pieces of art, books and documents dry out and can break or crack.

Your home and its furnishing make up what is likely your largest investment. By providing constant humidity control, Aprilaire humidifiers help to keep them in good condition, maintaining their value and extending their life.


Studies suggest approximately 74% of a home’s infiltration occurs at the home’s envelope (perimeter walls, windows, and doors,). A published study indicates the framing around doors, windows, etc, will have less shrinkage when the proper inside RH is maintained. Therefore, proper inside RH may reduce infiltration of outside air, because the cracks between the framing and the supporting structure will be reduced. With minimum shrinkage, there is less crackage, reducing infiltration, thus increasing energy conservation.

An Aprilaire whole-home humidifier also allows you to feel warmer at lower thermostat settings. The U.S. Environmental Protection Agency reports that you can save up to 4% on your heating bill for every degree you lower your thermostat.


Aprilaire offers a full line of evaporative and steam humidifiers. Both technologies are effective at delivering the right levels of humidity throughout your entire home; however, it’s important that the right product is selected to ensure your satisfication.


Evaporative humidifiers use forced-air heat to provide pure vapor humidity; preventing minerals from entering the air stream.


Steam humidifiers boil water creating steam, the steam is introduced into the air stream through a dispersion tube mounted in the duct.



The optimum levels of relative humidity in your home fluctuate with the changes in outdoor temperature. An Aprilaire automatic humidifier continually monitors and responds to both outdoor temperatures and indoor relative humidity, delivering optimum levels of humidity throughout your home. you never have to monitor your settings or wait until you feel comfortable. The automatic set-it-and-forget-it control keep’s your home’s humidity level exactly where you want it.


An installed Aprilaire whole-home humidifier adds the right amount of soothing moisture to your entire home. To acheive the same effect with a portable unit, you would need to place one in every room of your home.


To maintain the performance of a portable unit, you must continually monitor the tank levels and clean and fill them regularly. A whole-home system is installed out of your living space as part of your heating system, providing quiet operation without the messy tank. For your convenience, simple, easy maintenance is designed into every Aprilaire humidifier.


A good humidifier operates so that working parts are not affected by the build-up of material deposits. Aprilaire humidifiers are designed so the working parts are replaced every humidifier season, eliminating the requirement to clean and scrub vital components, increasing performance and reliability.

There’s no need to experience the discomfort, health problems or damage to your home and furnishings caused by air that is too dry. Install an Aprilaire whole-home humidifier with Automatic Digital Control and you’ll never worry about proper humidity levels in your home again.

The bottom line… whole-home + automatic digital control = peace of mind.

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