Filtration & Circulation /
How to Increase Pool Pump Pressure Safely
To increase pool pump pressure, focus on restoring normal water flow: clean baskets, service the pool filter, correct low water level, and check for blockages.
Archive date: this article was written for PoolSkimmer on Oct 23, 2026 and given the earlier archive date of Apr 5, 2026 so the blog reads as an organized archive. It was not published on that date.
First steps for higher pool pump pressure
When you are faced with low pressure in the pool pump, resist the urge to force it. The proper way to build up pressure in the system is to get normal water flow back in place. Always shut off the pump prior to opening a lid or basket, and be sure to adhere to what the chemical labels and equipment manual say.
Simple ways to check and improve pressure
The best approach is to look at the usual suspects for weak flow:
1. Water level. If it is too low the skimmer will not get enough water and the pump will suffer. 2. The baskets. Debris in the skimmer or pump basket chokes the flow. Make sure they are empty. Under no circumstances should one put a hand into suction equipment while it is running. 3. The filter gauge. Even with the pump on, a dirty filter can result in low pressure at the returns. 4. Blockages. Inspect the plumbing and filter for any leaves or hair that might be in the way. 5. Accessories. Take out a vacuum line or pool cleaner; they can create back pressure.
Should the gauge move after you have done any of this, you have probably pinpointed the issue.
The role of the pool filter
You will find that much of the pressure change in your system happens at the filter. A clog there will translate to low psi and feeble return jets. What you do about it is dictated by the type of filter you have:
- For a sand filter, backwash or clean per the maker’s instructions.
- With a *cartridge*, take it out and clean as the manual directs.
- A DE filter should be serviced in the manner the manufacturer prescribes.
It is better to let the pressure gauge tell you how the current reading compares to the norm after a cleaning than to guess at the procedure. There is no single “normal” figure for every setup.
Other sources of low pressure
Assuming the filter and baskets are in order, the trouble could be in the circulation system itself. You may be dealing with an air leak on the suction side or at the pump lid O-ring, a valve that is not fully open, or debris caught in the plumbing. A clogged impeller or even a faulty gauge can also mean less water is moving through the pump despite the motor being on.
Time to call in a professional?
If you have cleaned everything and the pressure remains down, or if the pump is losing prime over and over, it is time to contact a qualified pool pro. The same applies if you notice odd noises, leaks, or an erratic gauge. Do not tinker with electrical faults or reach into a suction outlet. If anything seems unsafe, power the system down.
In short
The key to raising pump pressure is to work with the flow rather than against it. Clear the baskets, top off the water, see to the filter and check for any air leaks. If that does not put things right, leave the diagnosis to an expert.
Sources and further reading
- [Hayward: Weekly pool maintenance](https://www.hayward.com/maintenance/weekly-pool-maintenance)