Home
Back
Filter Size Formula:
| From: | To: |
Pool filter size calculation determines the appropriate filter area needed for efficient pool water filtration based on the flow rate. Proper sizing ensures optimal water clarity and system performance in Australian pool conditions.
The calculator uses the standard Australian formula:
Where:
Explanation: This formula provides the minimum filter area needed to handle the specified flow rate while maintaining efficient filtration performance.
Details: Correct filter sizing is essential for maintaining water quality, reducing chemical usage, extending equipment life, and ensuring energy efficiency in Australian pool systems.
Tips: Enter the flow rate in litres per minute. The flow rate should be based on your pump's capacity and pool size requirements. All values must be positive numbers.
Q1: Why is the multiplier 2 used in the formula?
A: The multiplier 2 ensures adequate filter surface area to handle the flow rate while maintaining optimal filtration efficiency and backwashing intervals.
Q2: What is a typical flow rate for residential pools?
A: Most residential pools in Australia operate at flow rates between 100-200 litres per minute, depending on pool size and pump capacity.
Q3: How often should pool filters be sized?
A: Filter sizing should be done during initial pool design, when upgrading equipment, or if experiencing persistent water clarity issues.
Q4: Are there different formulas for different filter types?
A: While the basic principle remains similar, sand filters, cartridge filters, and DE filters may have slightly different sizing considerations.
Q5: What happens if the filter is undersized?
A: Undersized filters lead to poor water clarity, frequent backwashing, reduced pump efficiency, and potential equipment damage.