Aprilaire Model 700 Whole House Humidifier Review

Aprilaire Model 700 Whole House Humidifier is very powerful and will protect your home from dry air. This powered flow-through machine operates with your current heating and cooling system and produces accurately humidified air everywhere in your home. Aprilaire Model 700 is an evaporative humidifier and can give up to 18 gallons (68 liters) of mist per day. With that much amount of moisture, you can humidify spaces up to 4,200 square feet (390 square meters).


Aprilaire Model 700 Whole House Humidifier Review

  • Covers large area
  • Built-in drain to flush mineral build-up from the machine
  • Warm air evaporation
  • Water panel change indicator
  • Digital humidity controller with automatic and manual options
  • May reduce energy costs – during the colder months can help you feel warmer, leading to reduced heating costs
  • Efficient water usage


  • Should be installed by a qualified HVAC technician
  • Have to replace the filter regularly

Design and size

Aprilaire Model 700 is created to be installed on the warm air supply plenum of your HVAC system so it doesn’t have a unique design. The humidifier is made to be in a place where you don’t see it so you actually don’t need to think about how it looks.

Humidifier has a front cover, base, and a lot of parts between them. See the image below.

Aprilaire Model 700 Whole House Humidifier Review

As the humidifier doesn’t have a bucket it is not big and doesn’t weight much. Weight is only 9 pounds (4 kg).

Height: 15.9 inches  (40.5 centimeters)

Width: 15.9 inches (40.5 centimeters)

Depth: 10.3 inches  (26 centimeters)


First I have to mention that 2 Aprilaire 700 models are available. One comes with a manual humidity controller only and the other comes also with a manual and digital controller. The digital controller maintains automatic set it and forget it performance.Aprilaire Model 700 whole house humidifier

Set It and Forget It function enables you to insert your desired humidity level on the humidity control. Then the humidifier automatically keeps that level, no intervention wanted.

Automatic humidifier control shows you indoor humidity level, humidifier on/off indicator, change water panel indicator and Call dealer for Service light. It has also 7 dial settings. Use a table from the user manual to pick the right one. Those settings depend on the temperature and overall humidity level.

Aprilaire Model 700 has a water panel (filter) created specifically to give the proper humidity to your home throughout the heating season. Humidifier has an indicator that warns you when it’s time for a replacement.

Noise level

Humidifier has noise from the motor and fan blade. When operating slowly you barely can hear it but with the fastest speed, it is quite loud. But for such a powerful humidifier that’s normal.

Maintenance and upkeep

After installation, the next thing you will do is Water Panel change. For decent humidifying during the season, you should replace it twice per year. Water Panel price is around $16.95.

Periodical review and preventative maintenance of your total heating system are important for efficient and safe performance. Your heating contractor can maintain your humidifier when assistance the HVAC system.  

Overall you don’t need to do much about this humidifier. Just set it and let it work.


Aprilaire Model 700 whole-house humidifier is one of the most powerful humidifiers available today. The best thing about it is that you can set it and forget about it. A humidifier helps you feel warmer and in that way reduces heating costs. If you have dry air signs like itchy dehydrated skin, dry lips, respiratory sensitivity, and nasal hypersensitivities then you should try this humidifier.




Aprilaire Model 700

Coverage (Sq ft / m2)

4200 / 390


Humidifier Technology


Type of humidifier

Cool Mist

Moisture output per 24h (Gallons/liters)

18 / 68.1

Tank size (gallons/liters)

Direct from water faucet

Runtime per tank

Removable tank

Water refill indicator


Humidity range

15% – 55%

Humidity display

Automatic –

Manual –

Mist output control

Control type

Manual or electronic

Programmable timer

Automatic safety shutoff

Carrying handle


Remote control


Filter price

Filter cleaning and (or) replace

Replace annually

Germ protection

Demineralization cartridge

Noise level

From quite low till quite loud

Energy usage (max)




Size (inches / centimeters)

Height: 15.9 / 40.5

Width: 15.9 / 40.5

Depth: 10.3 / 26

Weight (pounds / kg)

9 / 4


5 years limited

Overall Rating (max 5)

4.4 out of 5 stars (4.4 / 5)

15% Price/performance

4.5 out of 5 stars (4.5 / 5)

5% Design

4 out of 5 stars (4 / 5)

35% Performance

5 out of 5 stars (5 / 5)

15% Features

3.5 out of 5 stars (3.5 / 5)

10% Noise level

4 out of 5 stars (4 / 5)

20% Maintenance & Upkeep

4 out of 5 stars (4 / 5)


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My name is Ryan. I have had a hard time dealing with my allergies. Happily, I found that an air purifier was effective to ease my allergy symptoms. I spent a lot of time researching the best air purifier. I know how hard it can be to find the suitable one.

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I now feel convinced that I have built a guide that shows you all you need to know about air purifiers, humidifiers, and dehumidifiers. So I came up with the idea of creating this website.

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