Aprilaire Drainless Bypass Humidifier

A drainless design means you do not need to install a dedicated floor drain or plumbing line near the humidifier unit. This simplifies the installation process significantly, as it recirculates water rather than flushing it out, making it a great option for locations where plumbing access is limited.

The wick filter typically requires replacement once per season, depending on your local water hardness and usage levels. We recommend checking it at the start of the heating season and replacing it if you notice mineral buildup or reduced performance.

While it is designed for straightforward operation, installing a whole-house bypass humidifier involves cutting into your existing HVAC ductwork. If you are comfortable with HVAC maintenance and tools, it is a manageable DIY project, but many homeowners prefer professional installation to ensure proper airflow and sealing.

The unit includes a manual dial control that allows you to set your desired humidity level based on the outdoor temperature. You will need to adjust this dial periodically as the weather changes to prevent condensation on your windows while maintaining comfortable indoor air.

This unit is designed for forced-air heating systems. Because it relies on the furnace's blower to move air through the humidifier, it will not function effectively with radiant heating, baseboard heaters, or ductless mini-split systems.