---
product_id: 135260747
title: "Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02)"
brand: "nu-calgon"
price: "₱4375"
currency: PHP
in_stock: true
reviews_count: 8
category: "Nu Calgon"
url: https://www.desertcart.ph/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190
store_origin: PH
region: Philippines
---

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

**Brand:** nu-calgon
**Price:** ₱4375
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your air pure and your humidifier hassle-free all season long!

## Quick Answers

- **What is this?** Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02) by nu-calgon
- **How much does it cost?** ₱4375 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/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

- • **Optimized for Hard Water:** Specialized media reduces mineral deposits better than competitors—perfect for well water users.
- • **Trusted Professional Grade:** Nu-Calgon quality ensures reliable performance for whole-house humidifiers up to 25 gallons daily.
- • **Scale-Free Comfort All Season:** Inhibits scale buildup for a full humidifier season, keeping your system efficient and clean.
- • **Versatile Fit for Your System:** Designed for both vertical and horizontal installation to seamlessly integrate with your HVAC setup.
- • **Effortless Pro-Level Installation:** Includes 1/4 inch compression fittings for quick, leak-free setup—no service call needed.

## Overview

The Nu-Calgon 4190-02 Humidi-Pro is a professional-grade in-line cartridge designed to inhibit scale buildup in whole-house humidifiers with up to 25 gallons per day capacity. Operating between 40°F and 80°F, it installs easily with included compression fittings and fits both vertical and horizontal water lines. Trusted by HVAC pros, it ensures cleaner humidifier operation, especially in hard water conditions, for one full heating season.

## 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: Installed myself and saved a $150 service call - Finally decided to install myself. Installation was very easy, followed instructions sheet and no leaks
Review: Best filter I've used for humidifier - I used this filter for my hard well water into a whole-house humidifier. I have used two other brands, and they both left a slurry-type mix in the humidifier reservoir, meaning they weren't filtering enough scale. This filter leaves very little, the res. doesn't need to be cleaned nearly as much. You can shake this filter and hear pellets moving, on the others I used you couldn't, so it must be a different filtering media. It works better, I'll be ordering these every year now, and would recommend as best for hard well water.

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #77,481 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #394 in Aromatherapy Diffusers #402 in Humidifier Parts & Accessories |
| Brand | Nu-Calgon |
| Color | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (238) |
| Date First Available | October 24, 2011 |
| Global Trade Identification Number | 00633841881240 |
| Included Components | Single Nu-Calgon 4190-02 Humidi-Pro (1 In-line Cartridge) |
| Installation Method | Packaged |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 7.4 ounces |
| Item model number | 4190-02 |
| Manufacturer | Nu-Calgon Wholesaler, Inc. |
| Model Name | Humidi-Pro (1 In-line Cartridge) |
| Operation Mode | Manual |
| Part Number | 4190-02 |
| Product Dimensions | 2"D x 6"W x 2"H |
| Room Type | Whole-house or central HVAC humidifier systems. |
| Shape | Cylinder |
| Size | Single Unit |
| Special Feature | 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. |
| Special Features | 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. |
| 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

### ⭐⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ Best filter I've used for humidifier
*by R***O on May 18, 2013*

I used this filter for my hard well water into a whole-house humidifier. I have used two other brands, and they both left a slurry-type mix in the humidifier reservoir, meaning they weren't filtering enough scale. This filter leaves very little, the res. doesn't need to be cleaned nearly as much. You can shake this filter and hear pellets moving, on the others I used you couldn't, so it must be a different filtering media. It works better, I'll be ordering these every year now, and would recommend as best for hard well water.

### ⭐⭐⭐⭐ 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

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-02-01*