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How To Do The Annual Maintenance On An Aprilaire 500 Whole Home Humidifier

How To Do The Annual Maintenance On An Aprilaire 500 Whole Home Humidifier

Like any other equipment, it is important to keep up with your seasonal maintenance in order to ensure continued optimal performance. Maintenance is typically performed before each heating season to prep for the coming humidifier season. This maintenance is fairly easy and you can perform it yourself, or if you would prefer, your licensed HVAC contractor can do it for you. If you do decide to do it yourself, use this video and your owner’s manual as a guide and you will get it done in no time!

Remember! Before you begin any maintenance, your first steps are to turn off the water supply, unplug the system, and turn off the electrical source to the furnace. After you have taken these precautions, you can take the humidifier cover off and check these parts: the water feed tube, the strainer, the orifice, the drain line, and the water panel.

  • The water feed tube needs to be flexed between your fingers – watch for any cracks or signs of wear. It will need to be replaced to prevent water leaks!
  • Remove the strainer from the side of the unit and flush it under water pressure to remove all the scale and mineral deposits.
  • Remove the orifice from the end of the water feed tube. It could be in the copper fitting or in the actual tube. Snap it out of wherever it is located and run under water to remove the mineral deposits and make sure it is not clogging the tube’ s water feed.
  • To remove the Aprilaire 10 water panel you will take it out of the frame.
  • Remove the water distribution tray from the top of the frame. Take a second to make sure that these holes are clear of any mineral build-up. If necessary, run it under water pressure to remove. This is replaceable if does not clean off.
  • Slide the water panel out and replace it with a new one with the colored spots at the TOP.
  • Reassemble the frame and reinsert it into the humidifier.

With the Aprilaire 500 your automatic humidistat will notify you with a yellow indicator light when it is time to change your water panel. If you have the 500M, use other resources to remind yourself when it is time to perform your seasonal maintenance. If you need any or all parts replaced – use the Aprilaire 500 Maintenance kit, part number #4839 to get everything you need in one easy kit! Remember, you can always consult your owner’s manual to get these step by step instructions in more detail. Or, if you feel most comfortable, you can have your contractor perform this annual maintenance for you.