Aprilaire 400 vs. 600 vs. 700 vs. 800 Humidifier

Aprilaire 400 vs. 600 vs. 700 vs. 800 Humidifier | Comparison in 2023

Health- an overused word, but sometimes taken for granted. And because it is inevitable to get sick, you need to avoid getting sick by investing in a device such as a humidifier.

You may be thinking why we recommend this kind of device of all health-related products available in the market. One great reason is that it can prevent airborne viruses that can increase the mortality rate.

In this guide, let us understand the difference between Aprilaire 400 vs. 600 vs. 700 vs. 800 humidifier. All of them are great, especially that they come from the same brand. However, there is only one that may be ideal for use at home or commercial purposes.

Aprilaire 400 vs. 600 vs. 700 vs. 800 Humidifier

Aprilaire Home Evaporative Humidifiers

Being dubbed as the topmost provider of air quality solutions, Aprilaire designs and manufactures all of its high output steam humidifiers in the USA. This only indicates durability, premium quality, longevity, and more exciting and beneficial features that you will surely adore.

Aprilaire Home Evaporative Humidifiers

It aims to give you and your family healthy air so that you can sleep better, feel better, and eventually live better. Since all of the products come with unique features that ensure ideal humidity for health, comfort, and preservation, it may be hard to choose among them.
Let us dig further into the various models to know more!

Aprilaire 400

In case you are planning to install a humidifier at your simple home, then you can always choose this model. Not only is it the cheapest, but it comes with the premium quality too. Just perfect for your needs and budget!

1. Aprilaire 400 Whole-Home Humidifier

If you’re looking for the finest humidifier for use at home, then you’re on the right track. For being made of heavy-duty construction, you can buy this with confidence. You are sure that it will provide you longevity thereby helping you save cost in the long-run.

Using this can help you conserve water since it employs a special process that leads to the evaporation of 100 percent of water found in the water panel. It can also cover 4,000 square feet, making it ideal for large households. Also, this has a capacity of 17 gallons a day, just enough to stay operational the entire time you stay at home.

It is made to adapt to both indoor and outdoor temperatures so you can obtain optimal humidity every day. This is made possible due to the dual sensors attached therein. All you have to do is to set it, and the device will just do its task automatically.

If you are wondering why you need this at home, well, it is good for your well-being! Since this can keep your home’s humidity level up to 45 percent, it can help in reducing your risk of respiratory infections. Not to mention, it can get rid of symptoms that are related to asthma and allergies.

This is because the device can lessen the growth of viruses, bacteria, dust mites, and fungi. Also, it can make you feel comfortable while preserving your things at home, especially those which are prone to damage due to dry conditions or changing humidity.

Perhaps, the main advantage of this model is its capacity to conserve water. It doesn’t even require a floor drain as compared to others on the list. But then, just like other items, it also comes with automatic control, dual sensor, and more!


  • Can cover up to 4000 square feet
  • Water capacity is 17 Gallons per day
  • Comes with dual sensor and automatic control
  • Promotes water conservation
  • Floor drain not required
  • Ideal for large households


  • Not ideal for outdoors

Related Guide: Aprilaire 700 vs. 700m

Aprilaire 600

This may have the same coverage like the 400, but if you want the improved version to ensure humidity at home for your utmost comfort, then decide whether the manual or automatic is good for you!

2. Aprilaire 600 Humidifier Automatic

If you want everything to be fixed to avoid the inconvenience and mess of portables, this automatic humidifier from Aprilaire is a must-have. With this, you can obtain maximum comfort at home all the time. That means that you can use this every minute, every hour, and every day!

You can always find a way on how to avoid drying out your skin even if you tend to heat indoor air. Just come to imagine how itchy it could be if all you can feel is heat. Also, you will experience that annoying static electricity. In order to get rid of this discomfort, you need to have proper relative humidity.

Just like the 400 model, this can cover up to 4,000 square feet too, making it a good choice for large households. This means that you no longer need to get separate units in every room at home. Using this allows for the distribution of evaporated air in your existing air ducts.

Don’t worry about repair and maintenance costs because this unit is highly revered for being a money saver. It comes with an outdoor sensor to ensure that it automatically adjusts according to the current humidity level. This can also minimize the condensation in your duct system to avoid mold development.

Well, it comes with automatic controls, so it won’t be hard for you to use it. Perhaps, its built-in bypass damper is the most amazing feature, and it works in two ways, by using gravity and utilizing air-flow in the ducts. This also indicates that it’s equipped with both summer and winter settings.

Anyway, you need to install fewer parts to function. But then again, there is no doubt that this unit can give you the ultimate convenience featuring silent operation, fixed device, and little cleaning requirements, just to name a few!



  • Made with an advanced technology bypass damper
  • Automatic
  • Silent operation
  • Low maintenance thereby saving your more money
  • Can cover up to 4,000 square feet
  • Permanent memory


  • Requires professional installation

3. Aprilaire 600M Whole Home Humidifier Manual

Maybe, you and your family have constantly been suffering from sore throats or the likes due to dry air. If that’s the case, maybe it’s time for you to put some investment in a humidifier that is tested to provide the proper humidity level in your entire home. With this, no air will ever be too dry or stale.

This model can offer up to 50 percent more humidity compared to other models that you can find in the market. And this is very convenient as it can be easily installed at once. And because it can cover up to 4,000 square feet, you no longer need to have several humidifiers in each room, which can be too costly too!

There is no doubt that this model is the best, given its premium quality performance in getting the job done. Not to mention, it is reliable too. Although every product of Aprilaire is expected to be one, this is worth mentioning, especially because manual devices are proven to be more durable compared to automatic devices.

Also, the filter is made to last longer, so you don’t have to think about replacing it frequently. More likely, it will take a year or so before you are advised to change it. Do you know that other models require you to change the filters after two to three months? And that’s an added cost, and we don’t want you to spend more.

Moreover, it is powerful enough to provide you with up to 3 gallons of humidity an hour. And that is enough compared to the usual, which only provides less than a gallon. Thus, you can always get the optimum humidity that you need at home, a comfortable air to breathe in.


  • Can cover up to 4,000 square feet
  • Humidity level up to 3 gallons an hour
  • Premium quality
  • Built-in sensor
  • Powerful device
  • Easy installation


  • Only for large household

Aprilaire 700

Are you planning to purchase a humidifier for your business? Or maybe you have a larger household that requires bigger coverage. This model is certainly the best choice either way!

4. Aprilaire 700 Whole Home Humidifier Automatic

Do you know that this humidifier can cover even more area than the previous products on this list? Well, if you have a larger household, or you need one for commercial purposes, then this model is a good choice for you!

It can outstandingly cover up to 4,200 square feet. As always, Aprilaire ensures that you buy its product with confidence. This is because this device, just like any others, is made of premium quality.

What is unique about this is that it comes with a built-in fan. It is for the purpose of pulling the heated air right from the furnace. Much more, it has a higher capacity of 18 gallons a day. That’s just more than enough for your everyday needs to ensure that the air is free from viruses, fungi, bacteria, and dust mites.

This is very important, especially in times of pandemic, wherein viruses can be detrimental to your health. It helps reduce the risk of respiratory allergies and infections? Plus, this can provide you with up to 45 percent of humidity to improve your entire well-being.

Not to mention, it can give you comfort so you will enjoy staying at your own home. This is especially vital in dry regions or during dry seasons. With the right humidity level, of course, using this humidifier, you will surely get the comfort that you deserve. Well, it can even help preserve furnishings, cabinetry, and wood.

This automatic device is equipped with dual sensors to respond and monitor indoor and outdoor temperatures. Also, it helps in providing you with optimal humidity throughout the day and night. All you have to do is to set your desired options then leave it to the humidifier to do its work!


  • Can cover up to 4,200 square feet
  • High-quality construction
  • Automatic
  • Can protect you from viruses
  • Promotes comfort at home
  • Provides optimum humidity
  • Ideal for dry seasons and regions


  • Quite expensive

Aprilaire 800

Want to save the cost of installing a humidifier in every room at home or commercial space? With this, you can get big savings as it can cover up to 6,200 square feet. Let us find out why this model is for you!

5. Aprilaire 800 Whole Home Steam Humidifier Automatic

If ever you are not satisfied with small coverage humidifiers, this device from the same brand would probably satisfy your needs. It can give you full coverage of up to 6,200 feet. And that is already enough for large homes unless you have the grandest mansion in town. Anyway, it’s also ideal for commercial use.

More interestingly, you have 6 options to choose from- in terms of gallons a day from 11.5 to 34.6. So depending on the installation and voltage, you have wide discretion as to its capacity. Anyway, this does not require purified water, thereby saving you cost as well as reducing the complexity of installation.

Well, it uses Electrode technology that requires water impurities to ensure the transmission of electricity. Also, it is an automatic humidifier so it can adjust its setting according to the temperature of your indoor and outdoor. Since made with steel, you are assured of its durability.

So if you are looking for a device that can give you around 50 percent of humidity, this is a good idea! The package includes drain tubing, valves, steam hose, and installation instructions, so you won’t be needing to purchase them separately. It is certain to provide you the ideal humidity for health, comfort, and preservation.


  • Can cover up to 6,200 square feet
  • 6 options from 11.5 to 34.6 gallons a day
  • Does not require purified water
  • Automatic humidifier
  • Steel construction thereby durable


  • Requires air ducts

Aprilaire 400 vs. 600 vs. 700 vs. 800 Humidifier – Which One to Choose?

Right now, you may already have one in mind. If not yet, bear in mind that no matter how superior one from another, you may not need it. What we mean is that the best may depend upon your discretion and requirements.

For Standard-Sized Homes

In case you only need a little coverage, let’s say around 4,000 square feet or less, then you can choose either the 400 or 600. Both of them are the ideal choice if you require a smaller place to humidify.

For Medium to Large-Sized Homes

you may opt for the 700 as it can cover up to 4,200 square feet. On the other hand, if you have a large commercial space or household that has around 6,200 square feet, then the 800 may be a good idea.

 Automatic vs Manual Humidifier

Automatic vs Manual Humidifier

Generally, your choice depends upon the size of the area. Anyway, after you have decided what model to buy, you have the option to choose between the manual and automatic types.
Again, it depends upon your preference. But it is recommended to opt for the manual not only because it is cheaper, but it is also sturdier.


After looking through the Aprilaire 400 vs. 600 vs. 700 vs. 800 Humidifier Review, it seemed like all of them offer the same features except for the coverage. There is only one device that can suit your home; that is why, after determining the size, you also need to consider whether you will go for the manual or automatic.

Also, choose one according to your budget. Well, in the end, the discretion still lies to you. Hopefully, you already have one in mind!

1 thought on “Aprilaire 400 vs. 600 vs. 700 vs. 800 Humidifier | Comparison in 2023”

  1. Thank you for this helpful comparison. Although, I thought I was having the Aprilaire 600 installed in my 1400 sq ft home, Model 500 was installed instead. Is there any reason that you don’t mention this model in your article?

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