Top FAQs

NuvoH2O softens water using citrus through a natural process called chelation. Our systems add food-grade citric acid (the kind found in lemons and limes) to your water, which binds to hard minerals like calcium, preventing scale buildup and gradually removing existing scale. It's safe for people, pets, plants, and septic systems, with no waste or electricity required.

Note: It is not recommended for water with a pH below 7.3 or a hardness above 25 Grains Per Gallon (GPG), as results may vary.

Our cartridges are designed to dissolve gradually over about 6 months. The Studio cartridge treats up to 20,000 gallons, and the Home cartridge up to 50,000 gallons. Actual lifespan may vary based on your water usage, pressure, and temperature.

Replacing your NuvoH2O cartridge is as easy as swapping out the batteries in a flashlight. Simply use the bypass valve to divert water, twist off the casing, insert the new cartridge, and you're done in minutes. When you're ready to discard the old one, simply bag it up and recycle it if your city accepts Class 3 plastics, or dispose of it in the trash. See full instructions here.

Want to make it even easier? Join our Autoship program and we'll send you a new cartridge every 6 months with 10% off and free shipping.

Your NuvoH2O system is covered by a 5-year limited warranty, which includes free repair, replacement, or modification if needed. The warranty is transferable if you sell your home, as long as you use genuine NuvoH2O cartridges. Please note that improper installation or exposure to direct sunlight will void the warranty. For full details, check out our Policies page.