Why does my pressure pump cut in and out?

Author: Jacky Jaskolski  |  Last update: Tuesday, September 30, 2025

If the water pressure is too low, the pump turns on. If the water pressure is too high, the pump turns off. This process of turning on and off is called cycling. Unfortunately, cycling can be very destructive to a well pump because it shortens the life of the motor and puts excessive wear on the control components.

Why does my pressure pump keep kicking on and off?

Insufficient water supply to the pump can cause it to turn on and off frequently. This may be due to a clogged inlet screen, a malfunctioning well pump, or a low well yield. Problems with the pressure tank, such as a waterlogged tank or a faulty air pressure control, can cause the pump to short cycle.

What causes a pressure switch to cut on and off?

Quick cycling (switching on and off repeatedly) can indicate a problem with the pressure switch or a waterlogged pressure tank. Examine the switch and pressure tank for issues. If you're still scratching your head, a repair service can troubleshoot and resolve the issue.

What does it mean when your water pressure goes in and out?

  • Clogged Pipes : Mineral buildup or debris in your pipes can restrict water flow, causing low pressure.
  • Faulty Pressure Regulator : If you have a pressure regulator and it's malfunctioning, it can lead to inconsistent water pressure.
  • Water Supply Issues
  • Leaky Pipes
  • Fixture Problems
  • Pump Issues

Why is my water pump cutting in and out?

The most common cause of water pump short cycling is a loss of adequate air charge in the water tank. This problem is particularly common in those homes with non-bladder water pressure tanks that are older. The good news is that this particular problem is relatively easy to remedy.

Troubleshoot: Water Well Pump Starts too Often (Rapid Cycling)

How to fix a water pump short cycling?

If you have sufficient air but still have short cycling, you may have a faulty or clogged water pump pressure control switch. This can occur when the water is full of silt or other debris, or when the water has high mineral content. Replace or repair the switch to restore normal function.

Why does my water pressure drop and then come back?

Why does the well water pressure drop and then come back? It may be due to a malfunctioning pressure switch or issues with the pressure tank. It could also be due to blockages in the plumbing system that eventually clear up, restoring the pressure.

Why does my water pressure keep fluctuating?

As water travels through your plumbing system, it carries along minerals and debris. Over time, these particles can accumulate in the pipes, forming a layer of sediment. This buildup acts as a bottleneck, restricting the smooth flow of water and causing fluctuations in pressure.

How do I tell if my water pressure regulator is bad?

How do I know if my pressure-reducing valve is bad?
  1. Diminishing or fluctuating water pressure…
  2. No water pressure.
  3. Thumping, banging, hammering, or vibrating noises in the walls…
  4. High water pressure, water leaking from faucet, toilet running constantly…

How to fix inconsistent water pressure?

If you already have a regulator installed and still experience fluctuations, it may be time to replace the device or adjust its settings. Another solution is upgrading or repairing the main shutoff valve. Over time, valves can wear out or become clogged with sediment, leading to water pressure problems.

How do I know if my water pump pressure switch is bad?

Check the pressure gauge on your plumbing system. If it reads below 40 PSI, the pump should be actively working to change that. If the pump isn't turning on despite a severely low reading, the pressure switch may be at fault.

Why is my pressure switch kicking in and out rapidly?

Switch Clicks On and Off Repeatedly

One possible cause for this issue is the tank's bladder is damaged or has lost its air charge, it can cause rapid cycling of the switch as it tries to maintain proper pressure.

Can you add air to a pressure tank with water in it?

To ensure the longevity and efficiency of your well pressure tank, there are a few simple steps you should take when adding air. First, turn off the water supply to the tank to prevent any mishaps during the process. Then, drain any excess water out of the tank to create more space for the added air.

Why is my water pump going on and off?

Too Little Air in the Reservoir Tank

These tanks depend on air pressure within to regulate the pressure switch. If the inside air pressure drops, the tank will not trigger the pressure switch correctly, causing the pump to switch ON and OFF erroneously.

Why does my pressure washer pump turn on and off?

The pump cycles on and off often.

Pump cycling, also known as short cycling, may result from a faulty pressure switch, air leaks or insufficient water supply.

What are symptoms of a bad pressure relief valve?

3 Signs Of Pressure Relief Valve Failure
  • System Cannot Reach Pressure. If your system isn't reaching pressure, this could be a sign of pressure relief valve failure. ...
  • System is Over Maximum Pressure. ...
  • Pressure Relief Valve is Leaking or Has No Pressure.

How often should you replace a water pressure regulator?

How often should you change your PRV? A PRV will typically last 10-15 years with some lasting up to 20. The lifespan will depend on a variety of factors. At the first signs of water pressure issues, water pipe noise, or visible corrosion on your PRV, you should have it inspected.

Why would water pressure come and go?

Valves direct and regulate your home's water supply and can cause inconsistent water pressure if they become damaged or corroded. They often experience leaks due to corroded threads and structural damage, requiring you to fix or replace them to restore your water pressure.

Why does my water pressure keep jumping?

The failure of pressure regulating valve

The regulating valve is used to stabilize and manage the main water line that enters your home. When your pressure regulating valve fails or isn't functioning properly, the water pressure in the main line may fluctuate between too low or too high suddenly.

Why does my water pump pressure keep dropping?

Improper inlet conditions are one of the most common reason pumps fail to produce their expect pressure. Inlet issues may also cause ongoing reliability problems. One culprit is air entrainment or lack of prime. It is important to make sure that system is designed so that liquid floods the pump to prime it.

How to tell if a well pump is bad?

Some of the most common indicators of a faulty well pump and pressure tank include:
  1. Fluctuations in Water Pressure. ...
  2. Noisy Pressure Tank or Clicking Sounds. ...
  3. Spitting Faucets. ...
  4. Scalding Shower Water. ...
  5. High Electric Bills.

Why does my well pump keep shutting off?

If the water pressure is too high, the pump turns off. This process of turning on and off is called cycling. Unfortunately, cycling can be very destructive to a well pump because it shortens the life of the motor and puts excessive wear on the control components.

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