1. What is a Pool Pump Size Calculator?

Definition: This calculator determines the required flow rate for a pool pump based on pool volume and desired turnover time.

Purpose: It helps pool owners and professionals select the appropriately sized pump for efficient water circulation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Required pump flow rate (gallons per minute)
• \( V_{pool} \) — Total pool volume (gallons)
• \( T_t \) — Desired turnover time (minutes)

Explanation: The pool volume is divided by the desired turnover time to determine the minimum flow rate needed to circulate all the water in that time.

3. Importance of Proper Pump Sizing

Details: Correct pump sizing ensures efficient filtration, proper chemical distribution, and energy savings while preventing equipment strain.

4. Using the Calculator

Tips: Enter the pool volume in gallons and desired turnover time in minutes (default 480 minutes/8 hours). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is turnover time?
A: The time required to circulate the entire pool volume through the filtration system (typically 6-8 hours for residential pools).

Q2: How do I find my pool volume?
A: Calculate using length × width × average depth × 7.5 for rectangular pools, or use our Pool Volume Calculator tool.

Q3: Should I round up the pump size?
A: Yes, select the next available pump size above your calculated flow rate to account for system resistance.

Q4: What about variable speed pumps?
A: Variable speed pumps should be sized to meet your maximum flow needs while allowing for lower speeds during normal operation.

Q5: Does this consider plumbing resistance?
A: No, consult a professional to account for pipe size, length, and fittings that affect actual flow rates.