Pool Filter Pressure Gauges

Pool filter pressure gauges are pretty straightforward pieces of equipment. They allow you to tell at a glance if your pool sand filter or cartridge filter is properly filtering out your pool water or if they need to be backwashed or cleaned.

To know when your filter elements need cleaning, you’ll first need to take note of your baseline pressure. This reading is taken just after cleaning (or installing new) filter media. Your baseline pressure reading is the indicator that your pool filter is under the correct pressure, and elevated pressure readings will mean that your filter elements are already saturated with dirt and debris, giving the water a harder time to push through the elements and in turn increasing the pressure.

Hint: If your pressure reading reads 8-10 PSI above your baseline then it’s a good idea to backwash your pool sand filter or to clean your filter cartridge. For tougher gunk and dirt stuck on your filter cartridges, you may need to give it a good soak in some Zodiac Filter Cleaning Solution.

Inversely, if your pool filter pressure gauge reads lower than your baseline pressure reading then this could be an indication that your pump isn’t getting enough water and this could mean anything from a low pool water level (which can be prevented by using a water leveling device like the Aqua Level Automatic Water Leveling Device) or a pool line clog which prevents water from reaching your pump. Read more on how to clear pool line clogs here.

When to replace your Pool Filter Pressure Gauges

Here are some signs to look out for that will indicate that your pool filter pressure gauge needs replacement.

Water leaking out from the pressure gauge
Pressure gauge needle not moving
Pressure gauge glass/face broken or cracked

Tip: If your pressure doesn’t come down on your cartridge filter even after soaking the cartridge in some cleaning solution, it may be time to replace the filter cartridge itself.

Pool Filter Pressure Gauges

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