Pool Filter Maintenance in Arizona.

Updated Jun 1, 2021

You can preserve your pool filter by performing a very simple quarterly maintenance and it can even extend its life by another 5-10 years. Pool filter maintenance in Arizona is one of the most important components of pool care.


To help you maintain that perfect pool water, we’ve created a definitive guide on everything you need to know about owning and operating a pool in Arizona.

From that guide, we have created this quick and easy reference article for on pool filter maintenance in Arizona.

Pool Filter Maintenance in Arizona

Depending on what type of pool filter you have… how you clean things will vary.

We recommend filter maintenance every 3 months in Arizona.

We go into more detail for each type of filter below, so just scroll to whichever type you own…

Cartridge Filter Maintenance in Arizona

If you have a cartridge filter, you have the easiest scenario.

  • Turn off the filter and pump and remove the cartridge.
  • Hose down the cartridge, making sure to get between the pleats.
  • For a deeper cleaning, if it’s really dirty, you can use filter cleaner or soak in a bucket overnight to loosen up the debris.
  • Check the O-ring on the filter tank. If it’s in good shape, apply some lubricant to keep it that way. If it appears worn out, be sure to replace it.
  • Turn the system back on and open the air relief valve to release any excess air in the system. Keep the valve open until a steady stream of water sprays from it.
  • Check the system pressure to be sure it’s in normal range. And you are good to go!

Sand Filter Maintenance in Arizona

If your sand filter or D.E. Filter reaches 10 psi over the normal operating level, or you are starting to see cloudy pool water, you will need to clean out the filter.

This takes a little more effort, especially in the Arizona heat, but you have two options…

backwash or acid wash.

How to Clean your Sand Filter in Arizona

  1. Backwash the filter for up to 5 minutes and remove all debris.
  2. Turn off the pump and switch the line valve to “Filter”.
  3. Remove the strainer lid from the pump.
  4. Get sand filter cleaner and pour it into the strainer basket and replace the lid.
  5. Turn on the pump for 15 seconds, which is long enough to get the cleaner to flow from the pump to the filter.
  6. Turn the pump off for at least 8 hours.
  7. Then, backwash your filter for up to 5 minutes again and remove any additional debris that has loosened up from the filter cleaner.
  8. Last, turn the filter system back on and you are good to go!

How to Clean your D.E. Filter in Arizona

  1. Backwash the filter for up to 5 minutes and remove all debris.
  2. Turn off the pump.
  3. Open the air relief valve.
  4. Drain the filter tank by removing the drain plug.
  5. Remove the clamps (or other latching devices) holding the filter together.
  6. Open the filter tank.
  7. Remove the filter manifold and take out the grids.
  8. Rinse out the tank with your hose.
  9. Clean the manifold:
    1. Use a spray nozzle on your hose to spray down the manifold, making sure to thoroughly flush the grids of all debris.
    2. If the manifold is really dirty, use a D.E. filter cleaner, or soak it overnight in a muriatic acid solution.
  10. Use a hose to rinse the grids, flushing out all debris, including the D.E. powder.
  11. Put the grids back into the tank.
  12. Add D.E. powder to the filter.
    1. Refer to your owner’s manual to determine how much D.E. powder you’ll need.
    2. Prime the pool pump.
    3. Remove the strainer basket lid.
    4. Fill the basket with water and run water through the incoming pipeline.
    5. Lubricate the O-ring inside the tank.
    6. Replace the filter lid and tighten the clamps or bolts to secure it.
    7. Open the air relief valve and release excess air from the tank.
    8. Turn the pool pump back on.
    9. Close the air relief valve when water begins coming out.
    10. Mix the appropriate amount of D.E powder with water to make a a thin and creamy solution.
    11. Make sure the pump is running.
    12. Pour the thin and creamy D.E. solution directly into the pool skimmer.
  13. Run the pool pump for at least 30 minutes to allow the D.E. to distribute evenly over the filter grids and you are good to go.

How to Clean your Sand or D.E. Filter with Muriatic Acid

This is pretty much the same as described above. The only add-on is that you will want to soak your manifold into a 5-gallon bucket of muriatic acid overnight to allow time to fully break-up that debris. Be careful using the acid. Wear glove and mask to avoid fumes and skin contact.


Anyways, we hope this guide was useful. We have been maintaining pools in Arizona for some time now with our Smart Chemistry technology and found that the above recommendations for pool filter maintenance should keep you on the right track.