Quick Answer
A normal frequency of well pump cycling is typically 2-5 times per hour, depending on the pump size, water usage, and tank sizing.
Understanding Well Pump Cycling
Well pump cycling refers to the repeated activation and deactivation of a well pump to maintain a consistent water pressure. This is necessary when the water demand exceeds the storage capacity of the tank, causing the pressure to drop. Proper tank sizing is crucial to minimize cycling frequency and extend the lifespan of the pump.
Factors Affecting Pump Cycling
Several factors influence the frequency of well pump cycling, including pump size, water usage, tank size, and pressure switch settings. A general rule of thumb is to size the tank for 2-4 gallons per minute (gpm) of water usage, assuming a 30-40 psi pressure drop. For example, a family of four using 10 gpm of water may require a 20-40 gallon tank.
Pressure Switch Settings
Pressure switches are typically set to activate the pump when the pressure drops to 20-25 psi and shut off when it reaches 40-45 psi. Adjusting these settings can impact the cycling frequency. A more aggressive setting (e.g., 18-22 psi activation, 38-42 psi shut-off) may reduce cycling but may also increase wear on the pump. Conversely, a more conservative setting (e.g., 22-25 psi activation, 42-45 psi shut-off) may reduce pump wear but may increase cycling frequency.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.