--- product_id: 135260747 title: "Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02)" brand: "nu-calgon" price: "256.24 DT" currency: TND in_stock: true reviews_count: 8 category: "Nu Calgon" url: https://www.desertcart.tn/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190 store_origin: TN region: Tunisia --- # One season scale inhibition 25 Gal/day capacity Easy vertical/horizontal install Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02) **Brand:** nu-calgon **Price:** 256.24 DT **Availability:** ✅ In Stock ## Summary > 💧 Keep your air crisp and your humidifier flawless—because scaling is so last season! ## Quick Answers - **What is this?** Nu Calgon Humidi-PRO Humidifier Treatment, white, single unit (4190-02) by nu-calgon - **How much does it cost?** 256.24 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Effortless Scale Defense:** Protect your humidifier from mineral buildup all season long. - • **Optimized for Efficiency:** Designed for 25 gallons per day humidifiers to maintain peak performance. - • **Temperature-Smart Design:** Operates perfectly between 40°F and 80°F—ideal for your HVAC system’s water line. - • **Trusted Pro-Grade Quality:** Nu-Calgon’s industry-leading formula ensures reliable, professional-grade humidifier care. - • **Universal Fit Flexibility:** Install vertically or horizontally with included compression fittings for hassle-free setup. ## 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. Easy to install vertically or horizontally with included compression fittings, it operates within 40°F to 80°F and protects your system for an entire heating season. Trusted by HVAC pros, it ensures cleaner, more efficient humidifier performance and extends equipment life. ## 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: Important add on for those with hard water! - If does what you really need! So important to minimize the scaling in a humidifier on your HVAC system. And it is easy to install. Just remember to change it every year. Review: Great filter for whole house humidifier! - It's just what my HVAC guy recommended! ## 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 | #168,451 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #365 in Humidifier Parts & Accessories #712 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 243 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. | | Part Number | 4190-02 | | 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 | | Smart Home Compatibility | Not Smart Home Compatible | | 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/513ZHa4AVGL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Important add on for those with hard water! *by D***R on March 14, 2026* If does what you really need! So important to minimize the scaling in a humidifier on your HVAC system. And it is easy to install. Just remember to change it every year. ### ⭐⭐⭐⭐⭐ Great filter for whole house humidifier! *by K***N on March 17, 2026* It's just what my HVAC guy recommended! ### ⭐⭐⭐⭐ 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.tn/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190](https://www.desertcart.tn/products/135260747-nu-calgon-humidi-pro-humidifier-treatment-white-single-unit-4190) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-27*