Buying a Salt System
If you're considering buying a pool salt system, there are several factors to consider to ensure you choose the right system for your needs. Here is a pool salt system buying guide to help you make an informed decision:
What to Consider When Buying
- Pool Size: Match the system’s rated capacity to your pool volume. When in doubt, size up for seasonal heat and heavy bather loads.
- Installation and Maintenance: Some cells are plug-and-play with unions and clear housings; others may need professional plumbing and electrical. Plan for periodic cell inspection and cleaning.
- Budget: Balance upfront price with cell lifespan and replacement cost. Energy usage and smart controls can affect long-term value.
- Brand Reputation: Choose proven brands with accessible parts and support.
- Warranty: Look for clear coverage on both the control unit and the cell, including pro-rated terms.
- User Reviews: Check feedback on real-world output, ease of setup, and menu navigation.
- Compatibility: Confirm plumbing size, electrical requirements, and placement after the filter and heater. Ensure your automation, heater, and flow rate suit the cell’s specs.
Pool Volume Sizing Chart
Use the chart below to estimate pool volume. Figures are approximate and based on a constant water depth of 48 inches.
| Pool Size |
Litres |
Gallons |
| 12' Round | 12,800 | 3,400 |
| 15' Round | 20,000 | 5,300 |
| 18' Round | 28,800 | 7,600 |
| 21' Round | 39,200 | 10,400 |
| 24' Round | 51,200 | 13,500 |
| 27' Round | 64,900 | 17,100 |
| 30' Round | 80,100 | 21,200 |
| 12' × 18' Oval | 21,000 | 5,500 |
| 12' × 24' Oval | 29,100 | 7,700 |
| 14' × 28' Oval | 39,600 | 10,500 |
| 16' × 32' Oval | 51,800 | 13,700 |
| 18' × 36' Oval | 65,500 | 17,300 |
| 20' × 40' Oval | 80,900 | 21,400 |
| 12' × 18' Rectangle | 24,500 | 6,500 |
| 12' × 24' Rectangle | 32,600 | 8,600 |
| 14' × 28' Rectangle | 44,400 | 11,700 |
| 16' × 32' Rectangle | 58,000 | 15,300 |
| 18' × 36' Rectangle | 73,400 | 19,400 |
| 20' × 40' Rectangle | 90,600 | 23,900 |
Quick Placement Tips
- Install the salt cell on the return line after the filter and heater for accurate control and to protect equipment.
- Maintain correct salt level per the manufacturer, typically around 3,000 to 3,500 ppm, and verify with a reliable test.
- Inspect the cell regularly and clean only when scale is visible to maximize lifespan.
Bottom Line
A properly sized and installed salt system automates chlorine production, keeps levels steadier than manual dosing, and can reduce day-to-day maintenance. Use the sizing chart to choose capacity, confirm compatibility with your equipment pad, and prioritize reputable brands with strong warranties.
