NEC-20 - Above Ground Pool & Spa Water Purification System

Maintain copper ion levels at 0.7–1.0 mg/litre.

Ready Year-Round — Pool & Spa

Unlike chlorine systems that degrade over winter or require draining when not in use, the NEC-20 runs continuously 365 days a year. Leave your pool untouched over winter or your spa idle through summer — the system keeps the water balanced and bacteria-free the entire time. Come back whenever you’re ready and it’s clean, clear, and swim-ready. No green water. No chemical shock. No hassle.

✔ Runs 365 days a year — no seasonal shutdown required
✔ Leave your pool over winter without draining or chemical correction
✔ Return to your spa after months away to clean, ready water
✔ No green water, no shock treatment, no drama

Technical Specifications

• Max pool size: 20,000 litres (20m³)
• Power rating: 5 Watt
• Power supply: 110–240V AC, 50/60 Hz
• Voltage output: 12V DC
• IP rating: IP54 (splash-water protection)
• Dimensions: L 200mm × H 148mm × W 115mm (incl. adapter: L 292mm)
• Weight: 1.8 kg (incl. electrode: 1.9 kg)
• Connections: 1½" (1" with supplied threaded adaptor)
• Electrode part no.: C21031
• Electrode lifespan: approx. 2–3 years
• Manufacturer: NECON GmbH, Germany

Installation

The NEC-20 is fully DIY-friendly for above-ground pool installations. All connectors and adapters are included in the box — no additional plumbing or tools required. Most customers complete installation in under an hour. For spa installations, professional installation by a spa or pool technician is recommended due to the varied plumbing configurations of spa systems.

See the full Installation Guide for step-by-step instructions.

📄 Download manual

Also Available

• Replacement Electrodes — NEC-20 (Part No. C21031)
• Claritech Test Kit
• Copper Ion Test Tablets (Refill)

Ideal for above-ground pools and spas up to 20,000 litres. For in-ground pools, see the NEC-2000.