USA's Most Trusted MRCOOL Dealer – Free Shipping*
This UV purification system is designed for use in mini-split, ductless, and HVAC applications. UV-A and UV-C technology help support cleaner internal HVAC surfaces, improved indoor air quality, and odor reduction. Always verify installation space, electrical requirements, and manufacturer recommendations before installation.
Send us your indoor unit model number, serial number, and photos of the existing part before ordering. This helps us verify compatibility and reduce the chance of ordering the wrong replacement part.
The Dust Free Duality Mini UV AutoSens is a compact, high-performance UV air and surface purifier designed for mini-split systems, ductless air handlers, and tight HVAC spaces.
Built with dual-spectrum ultraviolet technology, dual UV LED arrays, and an integrated VOC filter, this system helps keep damp HVAC surfaces cleaner while supporting better airflow and system performance.
Mini-split indoor units naturally collect moisture during cooling operation. Over time, that moisture can contribute to microbial buildup, musty odors, and reduced efficiency. The Duality Mini UV AutoSens is engineered to help address those problem areas directly inside the air handler using UV-A and UV-C irradiation, VOC filtration, and automatic airflow-based operation.
| Feature | Benefit |
|---|---|
| Dual UV LED Arrays | Two UV LED strips help maximize treated surface area inside compact HVAC spaces. |
| UV-A and UV-C Irradiation | Dual-spectrum ultraviolet light helps sanitize damp HVAC surfaces and supports VOC reduction. |
| VOC Filter | Adds an additional air-quality layer by helping reduce volatile organic compounds. |
| Automatic Airflow Sensor | Clip-on sensor automatically powers the unit on and off based on system airflow. |
| Dual Voltage Input | Works with 120VAC and 230VAC systems for broad HVAC compatibility. |
| Zero Ozone Emissions | Designed for safe indoor use without producing ozone. |
| Compact Installation | Made specifically for mini-splits, ductless systems, and other tight HVAC spaces. |
| Specification | Details |
|---|---|
| Brand | Dust Free |
| Product Series | Duality Mini-Split UV |
| Application | Mini-split, ductless, and compact HVAC systems |
| Input Voltage | 90VAC–240VAC |
| UV Technology | Dual UV LED arrays with UV-A and UV-C irradiation |
| Power Supply Dimensions | 4" L x 2.3" W x 1" H |
| LED Strip Dimensions | 8.8" L x 0.4" W |
| VOC Filter Dimensions | 7.8" L x 2.3" W x 0.1" H |
| Weight | 1.1 lbs. |
| LED Lifespan | 50,000 hours |
| Warranty | 5-year power supply warranty; 6-month LED strip warranty |
| Ozone Output | Zero ozone emissions |
Unlike bulky HVAC UV lights designed for ductwork, the Dust Free Duality Mini UV AutoSens is made specifically for confined HVAC spaces. Its compact UV LED strips fit inside mini-split air handlers, while the clip-on airflow sensor allows the system to operate only when airflow is detected. Durable 3M adhesives help simplify installation across a variety of system layouts.
This product and the technologies described are not medical devices and are not intended to diagnose, treat, cure, or prevent any disease or illness.
MRCOOL DIY Direct offers trusted HVAC products, fast shipping, and knowledgeable support from a team that understands ductless systems. Whether you are maintaining a mini-split system, improving indoor comfort, or adding UV protection to your HVAC equipment, the Dust Free Duality Mini UV AutoSens is a smart upgrade for cleaner system operation.
| Known Compatible Models / Series |
|
|---|---|
| Compatibility Notice | This part may fit other MRCOOL® models and generations. Compatibility outside the listed models is not guaranteed without verification. |
| Part Category | Indoor Air Quality Products |
|---|---|
| Part Type | UV Air Purifier |
| Brand | Dust Free® |
| MRCOOL® Part Number | DF19200 |
| Also Known As |
|
This replacement part may be needed if your system is experiencing any of the following issues:
This replacement part should be installed by a qualified technician or a capable installer familiar with mini split service procedures. Always disconnect power before servicing HVAC equipment.
No Q&A content has been added for this replacement part yet.
MINI-SPLIT UV PURIFICATION
Mini-split systems naturally collect moisture during operation. Over time, damp coils and internal components can become breeding grounds for mold, bacteria, biofilm, and odor-causing contaminants. UV purification systems help reduce microbial growth on critical HVAC surfaces, supporting cleaner operation, improved airflow, and better indoor air quality.
Mini-split evaporator coils regularly experience condensation. UV-C technology helps reduce microbial growth on damp surfaces where mold and mildew commonly develop.
Keep coils cleaner and reduce musty mini-split odors before they become a problem.
Microbial contamination inside HVAC systems can impact indoor air quality. UV purification helps reduce biological contaminants before they circulate throughout the conditioned space.
Cleaner HVAC components often contribute to fresher indoor air.
Dust, moisture, and microbial buildup can accumulate on evaporator coils over time. UV technology continuously treats critical coil surfaces while the system operates.
Cleaner coils can help maintain proper airflow and heat transfer.
One of the most common mini-split complaints is unpleasant odors caused by biological growth inside the indoor unit.
UV purification helps address odor sources instead of simply masking them.
The Duality Mini UV AutoSens uses an airflow sensor that automatically activates the system when airflow is detected.
No manual switching required.
Designed for confined HVAC spaces, the Duality Mini UV AutoSens works with most ductless mini-split systems regardless of brand.
Compatible with many residential and light commercial mini-split installations.
The Dust Free Duality Mini UV AutoSens combines dual-spectrum UV-A and UV-C technology, automatic airflow sensing, VOC filtration, and zero ozone emissions to help maintain cleaner mini-split systems and healthier indoor environments.