This is the James Bond of DI systems. It uses electricity to continuously polish water without chemicals. No acid, no caustic, no regeneration downtime. It just… works. Quietly. While you sleep.
Warning: EDI has opinions. It demands good pre-treatment—usually reverse osmosis (RO) water going in. Feed it raw tap water, and it will throw a tantrum, spiking your conductivity like a bad day at the stock market. Side comment: Don’t be the person who buys an EDI and then asks me why it’s “not working” when your incoming water has 200 ppm hardness. You know who you are.
San Diego RO/DI Systems: A Practical Guide to High-Purity Water