Why is my Aprilaire humidifier not working?
Owen Barnes
Published Mar 24, 2026
Why is my Aprilaire humidifier not working?
Common solutions for: Aprilaire Humidifier not getting water The water inlet valve is an electrically-controlled valve that opens to allow water to enter the humidifier. If the water inlet valve is clogged or defective, the humidifer will not fill with water. If the water inlet valve is clogged, replace it.
How often does aprilaire 800 drain?
Q: How often does the unit drain? A: If the humidifier has operated 168 hours without a drain cycle, the drain valve will open and drain the canister. If the humidifier doesn’t receive a call to operate in 72 hours “end of season,” the controller drains the canister.
How does the aprilaire 800 work?
The device uses electrode technology, which means that the electric current flows between electrodes that are submerged in water, heating the water as a byproduct of the electric current. The electrodes are located in a replaceable canister, which you can throw out when the cold season passes and install a new one.
How do you troubleshoot a humidifier?
Humidifier Does Not Work
- Be sure the humidifier is plugged into an outlet that works and that the unit is turned on.
- Check the setting on the humidistat.
- Be sure the humidifier’s reservoir is full of water.
- Unplug the humidifier unit.
- Remove the humidifier’s cover panel.
Why isn’t my furnace humidifier working?
Furnace humidifiers are pretty simple gadgets. When they Stop working, the cause is usually a clogged or burned-out solenoid water valve or a bad drum motor. You can replace those parts yourself—if you can find them at an affordable price. Turn off the power to the furnace and humidifier.
How do I reset my humidifier?
Things You Will Need
- Set the power dial to the “Reset” position.
- Unplug the device, remove the water tank and lift the tray from the base of the humidifier.
- Refill the water tank and reassemble the humidifier.
- Plug in the humidifier and set the power dial to “High.” The “Reset” light should turn off automatically.
How can I tell if my Aprilaire humidifier is working?
By turning the dial of your manual humidistat to a setting above the “click point” you should see water coming out of the drain line within a few minutes which would indicate your humidifier is working.
Should aprilaire blower activation on or off?
It’s recommended to choose “on” for optimal humidity, since temperature in some seasons may be so mild, yet dry, the humidifier… see more. There is a blower activation option/setting. “On” will allow the humidifier to extend the blower run time. “Off” forces the humidifier to only work as needed during furnace run time …
How much power does an aprilaire 800 use?
While running, the unit draws between 14-16 amps.
What should my aprilaire be set at?
Aprilaire, like any other humidifier manufacturer, designs their humidifiers to maintain an indoor relative humidity of 35% at an indoor temperature of 70F, anytime the outdoor temperature is 20F or above.
How do I test my Aprilaire humidifier?
To check the humidifier operation, set the knob to “Test/Reset”, make sure that the water saddle valve is open and that there is electricity to the unit. The furnace blower motor must be operating and the furnace calling for heat for the Aprilaire Humidifier to function.