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Annual Maintenance for your WatchDog NXT Dehumidifier


Your new NXT dehumidifier requires a little maintenance to continue running properly. Cleaning the filters, coils, and drain will help prevent any issues.

Before beginning any maintenance or repairs, always remember to turn your dehumidifier off and allow it to shut down completely. It can take up to a minute for the unit to cycle off.

Cleaning the Filters


First, check the filters for dirt and buildup, then rinse with water or replace, depending on the filter type:

•Pre-Filter (standard on dehumidifier: Rinse with water
• MERV-10 Filters (standard on dehumidifier): Replace as needed
• Carbon & HEPA Filters (optional accessories): Replace as needed

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Cleaning the Coils

Once the filters are clean, it’s time to clean the coils.
Tools Needed:
• Self-Rinsing Foaming Coil Cleaner
•Spray the entire surface of the coils with the spray
•Let sit for 5 minutes
• That’s it. There’s no need to wash off the coil cleaner. WEB Coil Cleaner

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Cleaning the Pump

{only applicable for WatchDog NXT85c + 120c models}

For dehumidifier models with an integrated pump, you will need to clean the condensate pump:

Basic Cleaning
Tools Needed:
• Cleaning Solution (choose one of the following):
• 1 ounce bleach mixed with 15 ounces of water
• 4 ounces white vinegar mixed with 15 ounce of water

1. Push the drain button to empty the pump reservoir
2. Unplug the dehumidifier and carefully pour the cleaning solution into the drain tray.
3. Allow the cleaning solution to soak for 15 minutes, then plug the dehumidifier back in
4. Add 32 ounces of clean water to the drain tray
5. Allow the pump to cycle at least 2x through
6. If the drain line is still dirty, repeat this process. If this doesn’t help, move onto Advanced Cleaning (see below).

Advanced Pump Cleaning
If basic cleaning doesn’t clear out the drain line, it’s time to move on to advanced cleaning:

Tools Needed:
• Cleaning Solution (choose one of the following):
• 1 ounce bleach mixed with 15 ounces of water
• 4 ounces white vinegar mixed with 15 ounce of water

1. Press the drain button to drain the water from the reservoir
2. Unplug the dehumidifier and remove the side panel so you have access to the pump
3. Remove the pump head from the reservoir by removing the screw holding it in place
4. Wipe the reservoir clean with a paper towel
5. Reassemble the pump
6. Pour the cleaning solution into the drain tray
7. Allow solution to soak for 15 minutes
8. Reconnect the dehumidifier to power
9. Fill the reservoir with 32 ounces of clean water and allow the pump to cycle at least 2x.

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Cleaning the Gravity Drain

{only applicable for WatchDog NXT60, NXT85, + NXT120 models}

If you have a gravity drain model, you will need to clean the drain:

1. Mix one of the cleaning solutions listed above
2. Pour the cleaning solution into the drain tray
3. Let soak for 15 minutes
4. Pour 32 ounces of clean water into the drain tray to flush out the cleaning solution.

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For more detailed instructions, check out our How to Guide Section.

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