---
product_id: 135260747
title: "Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02)"
brand: "nu-calgon"
price: "27813 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Nu Calgon"
url: https://www.desertcart.hu/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190
store_origin: HU
region: Hungary
---

# 25 Gal/day capacity Operates 40°F–80°F Easy vertical/horizontal install Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02)

**Brand:** nu-calgon
**Price:** 27813 Ft
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your air crisp and your humidifier flawless—because clean air is the new luxury.

## Quick Answers

- **What is this?** Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02) by nu-calgon
- **How much does it cost?** 27813 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190)

## Best For

- nu-calgon enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Installation:** Includes 1/4 inch compression fittings for a hassle-free setup—no pro needed.
- • **Trusted Pro-Grade Formula:** Nu-Calgon quality ensures professional-grade performance for your home comfort system.
- • **Extend Your Media Pad Life:** Keeps solenoid switches happy and media pads lasting longer—saving you money.
- • **Optimized for Mid-Range Temps:** Engineered to perform perfectly between 40°F and 80°F—ideal for your home HVAC.
- • **Scale-Free Season, Every Season:** Protect your humidifier from mineral buildup for a full heating cycle.

## Overview

The Nu-Calgon 4190-02 Humidi-PRO is a professional-grade in-line cartridge designed to inhibit scale buildup in 25 gallon/day humidifiers. It installs easily with included compression fittings, operates efficiently within 40°F to 80°F, and protects your system for an entire heating season, extending component life and maintaining optimal humidifier performance.

## Description

The Nu-Calgon 4190-02 Humidi-Pro keeps humidifiers clean and scale free for one season. Installs on the water line that supplies water directly to the humidifier. Equipped with compression fittings for easy installation and seasonal change-outs. For best results, humidifier should have a daily dump of water from the sump to diminish scale forming minerals. Install a new Humidi-Pro before each heating season. Operating temperature, min./ max, 40°F - 80°F. THE NU-CALGON 4190-02 HUMIDI-PRO IS FOR PROFESSIONAL USE AND SHOULD ONLY BE USED IN ACCORDANCE WITH ALL REGULATIONS AND PROPER SERVICE PRACTICES. PLEASE SEE PRODUCT LABEL OR CONTACT NU-CALGON DIRECTLY FOR USE INSTRUCTION. IT IS RECOMMENDED TO UTILIZE THE APPROPRIETE PPE (PERSONAL PROTECTIVE EQUIPMENT) DURING APPLICATION.

Review: It works and it fit well - this worked well and fit well. Has kept my humidifier solenoid switch from problems and I think make the media pad last longer
Review: Installed myself and saved a $150 service call - Finally decided to install myself. Installation was very easy, followed instructions sheet and no leaks

## Features

- The genuine Nu-Calgon 4190-02 is a single In-line Cartridge of Humidi-Pro and is considered a scale inhibitor for 25 Gallon/Day humidifiers.
- Humidi-Pro is not to be used on hot water lines and has usage temperatures of 40°F to 80°F.
- The Nu-Calgon 4190-02 can be installed vertically or horizontally and includes two 1/4 inch compression fittings.
- Nu-Calgon Humidi-Pro will inhibit scale for one season.
- Nu-Calgon, the brand you trust, provides quality chemicals and specialty products for professional use only in the air conditioning, refrigeration and heating markets.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008HQ7C14 |
| Best Sellers Rank | #64,458 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #284 in Humidifier Parts & Accessories #325 in Aromatherapy Diffusers |
| Brand | Nu-Calgon |
| Brand Name | Nu-Calgon |
| Capacity | 25 G/day |
| Color | White |
| Control Method | Push Button |
| Customer Reviews | 4.3 out of 5 stars 238 Reviews |
| Filter Type | Scale Inhibitor |
| Global Trade Identification Number | 00633841881240 |
| Included Components | Single Nu-Calgon 4190-02 Humidi-Pro (1 In-line Cartridge) |
| Item Dimensions D x W x H | 2"D x 6"W x 2"H |
| Item Shape | Cylinder |
| Item Type Name | Humidi-Pro |
| Manufacturer | Nu-Calgon Wholesaler, Inc. |
| Material | Treatment cartridge (contains scale-inhibitor media) |
| Model Name | Humidi-Pro (1 In-line Cartridge) |
| Model Number | 4190-02 |
| Operation Mode | Manual |
| Other Special Features of the Product | Easy installation vertically or horizontally, includes compression fittings, operating temperature range 40 °F–80 °F, not for hot water lines, treats up to 25 gal/day capacity systems. |
| Power Source | Corded Electric |
| Product Dimensions | 2"D x 6"W x 2"H |
| Room Type | Whole-house or central HVAC humidifier systems. |
| Runtime | 720 hours |
| UPC | 681001419024 633841881240 667744956163 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Nu-Calgon
- **Capacity:** 25 G/day
- **Color:** White
- **Operation Mode:** Manual

## Images

![Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02) - Image 1](https://m.media-amazon.com/images/I/51MxyxBEZDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works and it fit well
*by J***N on February 14, 2026*

this worked well and fit well. Has kept my humidifier solenoid switch from problems and I think make the media pad last longer

### ⭐⭐⭐⭐⭐ Installed myself and saved a $150 service call
*by A***E on January 9, 2024*

Finally decided to install myself. Installation was very easy, followed instructions sheet and no leaks

### ⭐⭐⭐⭐ Quality Humidifier Water Filter
*by E***T on December 20, 2025*

Needed to remove hard water deposits to prevent clogging the steam canister quickly. The expense is high due to the brass fittings are sold as a kit with the filter and are not needed once the first filter install is completed. After the first install of the filter, the brass fittings are not needed since using steel braided water lines with couplings that come with the braided water lines.

## Frequently Bought Together

- Nu-Calgon 4190-02 (1 In-line Cartridge) Humidi-Pro, Single Unit
- Homewerks 7252-25-14-PTC Ice Maker Supply Line and Humidifier Installation Kit 1/4-Inch x 25ft Push to Connect Poly Tube Universal Compatibility, Brass

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hu/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190](https://www.desertcart.hu/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190)

---

*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-07*