Many of us know about the main pool filter parts but it is also necessary to be updated about the gadgets that are a part of the main pool filter. One such part is the pressure gauge. By looking at the recordings of the pressure gauge, a pool owner can assess whether the cartridge filter needs to be cleaned or replaced. It is always advise to use quality pool filters products as they keep the water purified and fresh for a long period of time. If you are not well versed with how the pressure gauge of the swimming pool cartridge filters work, here is a quick guide for you.


To start off with, you should determine a 'normal operating pressure'. This reading is the reading taken immediately after the cartridges of the filter are cleaned and installed. Make sure you note down the reading. The next time when you service, clean or replace the cartridges, compare the new reading with the previously recorded reading. Generally, the cartridge pool filter should be cleaned if the pressure reaches 10 PSI or more than the normal reading. At times, the pool owner fails to understand the significance of the reading observed in the pressure gauge. Listed below are a few interpretations:

Unnatural Low Pressure:

If you compare the reading of your pressure gauge with the previously recorded reading and find it to be low than what you had expected, then this might be an indication of a few problems. Some blockage in the filter might be a reason for the improper functioning of the filter. In this case, check the water level and then check if any debris is present in the basket of the filter. If there is no problem in either of these, make sure you check that the skimmer weir door is not in a closed position.

Exceptional High Pressure:

If the reading is exceptionally high, it clearly means that the filter needs to be cleaned immediately. Also, if accidentally, any of the valves of the return lines gets closed, the reading shoots up. This prevents the water from going back into the swimming pool and creates back pressure, resulting in exception high recording.

Unsteady Pressure Reading:

If you cannot determine the pressure reading, immediately check the water level in the pool. If there is less availability of water in the pool, the pump does not work efficiently.

Keep an eye on the recordings and determine the state of your filter and pool in seconds!