---
product_id: 430268
title: "BONECO Demineralization Cartridge 7531"
brand: "boneco"
price: "€ 3.72"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/430268-boneco-demineralization-cartridge-7531
store_origin: PT
region: Portugal
---

# Water mist Easy replacement Compatible granules BONECO Demineralization Cartridge 7531

**Brand:** boneco
**Price:** € 3.72
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate Your Humidity Game!

## Quick Answers

- **What is this?** BONECO Demineralization Cartridge 7531 by boneco
- **How much does it cost?** € 3.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/430268-boneco-demineralization-cartridge-7531)

## Best For

- boneco enthusiasts

## Why This Product

- Trusted boneco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Transform Your Air:** Experience pure, mineral-free mist for a refreshing atmosphere.
- • **Sustainable Solution:** Refillable design promotes eco-friendly practices while enhancing your space.
- • **Limescale-Free Living:** Say goodbye to limescale buildup and hello to clean air.
- • **Effortless Maintenance:** Quickly replace cartridges or top-up granules every 2-3 months.
- • **Universal Compatibility:** Works seamlessly with a wide range of BONECO & AIR-O-SWISS humidifiers.

## Overview

The BONECODemineralization Cartridge 7531 delivers a consistent water mist free from minerals and limescale, ensuring a clean and refreshing environment. Designed for easy cartridge replacement or granule top-ups every 2-3 months, it is compatible with a variety of BONECO and AIR-O-SWISS ultrasonic humidifiers, making it a versatile choice for maintaining optimal humidity levels.

## Description

When properly installed and maintained, the 7531 Demineralization Cartridge effectively prevents the release of minerals in the air. Replace or refill the cartridge every 2 – 3 months or more frequently in areas with hard water.

## Features

- Provides water mist without minerals or limescale
- Easy cartridge replacement or easy replacement of the granules every 2 – 3 months
- Can be refilled with top-up granules A7533. Compatible products : U650, 7135, 7142, 7144, 7145, 7147, U200, U700
- Use with all BONECO & AIR-O-SWISS ultrasonic humidifiers except the U7146 Travel & U300 series

## Images

![BONECO Demineralization Cartridge 7531 - Image 1](https://m.media-amazon.com/images/I/81PrBIT1kmL.jpg)
![BONECO Demineralization Cartridge 7531 - Image 2](https://m.media-amazon.com/images/I/71hgPYe2zyL.jpg)

## Questions & Answers

**Q: Why is this so expensive?**
A: Supposedly the "BONECO Aqua Pro 2-in-1 Humidifier Filter A250" is a replacement for the 7531 demineralization cartridge, and it's priced much more reasonably.

**Q: I know granules are disposable, but what is shelf life of this cartridge? Can it be refilled over and over forever?**
A: We usually use the refill.  There is a fine netting at the bottom of the cartridge for the water to filter through.  Ours has just, for the first time with running two units--one 4 years and one 2 years, had the netting break in one that is two years old which resulted in the granules spilling into the entirety of the humidifier.  It was a bit of a mess to clean up, but not too terrible.  Worst part was that we had just refilled a few days prior.  So, in short, yes, can be refilled over and over for quite some time, but not forever.  I would recommend checking the netting at the bottom after dumping old granules and before replacing with new ones for structural integrity.

**Q: One ct at $15.99; 2pk at $60.99? I'm obviously misreading something. Please clarify.**
A: That has to be a typo. I'll do two at $31.98. : )

**Q: Does this fit the aos 7135 model?**
A: Yes! We have two best we ever owned.

## Frequently Bought Together

- BONECO Demineralization Cartridge 7531
- Leemone Humidifier Cleaner 12 Pack, Demineralization Cleaning Ball, Works in All humidifiers and Fish Tanks, Purifies Water, Prevents Hard Water Build-Up, Eliminates White Dust and Odor
- LEVOIT Humidifier Replacement Filters 10-Pack, Mineral Absorption Pad,Compatible with LV600S,LV600HH,OasisMist450S,Capture Fine Particles in Water Tank to Improve Humidification Efficiency,White,18x24

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-04-23*