It is now a fact that the Aprilaire brand is not newcomers to the home cooling and humidifier industry. Not only have they been present since 1954, and had the time and resources to experiment with new models and follow evolving trends, but they have also maintained a certain standard all through. This is what is endearing about Aprilaire products, and it’s not just brand loyalty that makes them feature on almost all humidifier reviews out there. Their ability to design humidifiers meant such as the Aprilaire 600M to meet specific needs shows that the brand is dedicated to inclusion and that there is something for everyone, and nothing could give users more assurance than that.
Aprilaire 600M for Large Space Coverage

The Aprilaire 600M is designed to suit people with large spaces who reside in areas with dry weather all year long. The humidifier can cover spaces up to 4,000 square feet, thanks to its 17-gallon tank capacity. Like the other Aprilaire models, the 600M features dual sensors that detect both indoor and outdoor temperatures and adjust humidity based on the collected data. Also, it maintains humidity according to your preset preferences, so after you have set it and forget it.
Automated Operation and Low Maintenance
The 600M does a lot of things right, and its automatic functions are part of those things. Its intuitive sensors help the humidifier to deliver efficient humidity with little or no human control, and this feature also makes the unit function with minimal routine cleaning. The outdoor sensors regulate the indoor sensors, so there is less buildup of mold from low or high humidity. The water panel may be used for 12 months before it needs replacement, and all other major parts (such as the solenoid valve) only need to be changed every 5-years.
The digital display ensures that all current stats are kept visible at all times– humidity percentage, active status, water panel indicator, and service alerts. A blower activation switch lets you choose whether the humidifier should run 24/7 or only when your furnace is on.
All-Year Round Humidity

The 600M boasts of an in-built bypass damper, which regulates hot and cold air for humidity at all times. It means that the 600M is perfect as a humidifier for all seasons, especially in areas that experience dry summers and cold winters, and its automatic function will save you the stress of figuring out what humidity levels work for which season.
Because it’s not a steam-powered system, the 60M operates very quietly and does not require refills like stand-alone systems because it will be integrated with existing HVAC ductwork. However, because of this, it will require professional installation. DIYers will not like that bit of information but hey, sometimes it’s good to sit back and have someone else do the work. It would cost a pretty penny, but for the promise of having clean, allergen-free air, we say it is a good investment.
Our plus for this
- Automatic operation
- Winter and summer humidity settings
- Covers large spaces
- Quiet operation
- Low maintenance
Our minus for this
- Requires professional installation
- Poor drainage system; water buildups
The Aprilaire 600M is not an everyday humidity machine that requires regular cleaning, rather a yearly routine. It is also water and energy saving model, therefore, the running cost will not be much as regards to most competitive units. The quiet maintenance is another competitive advantage when you purchase it for night use.
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