How to Replace an Aqua Pure AP810 Water Filter

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Last Updated: July 24, 2025

Filters for the Aqua-Pure AP801 and AP801-1.5 are used to address sediment, taste, rust, and odor concerns with your drinking water. The Aquapure AP810 whole house water filter removes sediment, rust, and other contaminates down to 5 microns. Depending on your incoming water quality it is recommended that you replace your AP810 filter at least every 6 months.

Steps

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Bleed the pressure from your Aqua-Pure unit by pressing down on the red button (pressure relief button) on the top of the filter housing

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Once in place turn to the left to unscrew.
Add a small amount of silicone o-ring lubricant (available at most hardware stores) to the O-ring and screw the housing back into the head.

Community Q&A

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Question

What can I do if I push the red button to turn the water off, but it still won't come loose?

Community Answer

The red button does not turn the water off, you need a valve before the filter to do that. The red button releases the remaining pressure. If you are having trouble, somehow brace the filter and turn it really hard. I broke the PVC pipe connecting it to my house because I didn't brace it when I was trying to get the filter off.

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Question

How do I remove air from the lines?

Community Answer

The button will do a little, but you probably just need to run the closest faucet for a while.

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Question

When I turn the water on after putting in a new filter, and closing the housing, water comes pouring out. The housing appears to be correctly tightened. What could be wrong?

Community Answer

Did you lose the large black O-ring? If the O-ring is missing, or if it's getting hard, then you will have a flood.

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Tips

Change the filter cartridge at least every 6 months. Improper installation and maintenance may result in property damage due to water leakage.

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Warnings

Do not use with water that is micro-biologically unsafe or of unknown quality without adequate disinfection before or after the system.

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