Choosing between two refrigerant leak detectors for HVAC installation work often comes down to how you want to work on the job. Do you want a self-contained diagnostic kit that gives you a display and a wide refrigerant list, or a lighter sniffer that responds quickly and reaches farther into the line set? The Elitech ILD-200 and the HVAC Refrigerant Leak Detector with stainless steel sensor (model ST-382P) sit on opposite sides of that choice, and both land within about a $17 spread at their listed prices.
Quick verdict: For most install techs, the Elitech ILD-200 is the more complete kit: it arrives with a carrying case, uses an infrared NDIR sensor, and covers a long list of common refrigerants. If you want a fast, portable sniffer for spot checks and want to stay closer to the lower end of the price spread, the ST-382P is the one to keep in your bag.
| Product | Listed price | Price bar | Key spec |
|---|---|---|---|
| Elitech ILD-200 | USD 189.99 | NDIR infrared sensor, TFT display, carrying case included | |
| ST-382P Refrigerant Leak Detector | USD 172.48 | 2-second response, 15.5 in sensing distance, ±0.1 oz/yr accuracy |
Where each product wins
- Elitech ILD-200: If you want a single tool that is ready for mixed systems, the ILD-200's listed detection list spans HFC, HCFC, CFC, and halogen gas, with support for refrigerants like R-134a, R-410a, R-404a, and R-1234yf.
- ST-382P: If your install day moves between a mini-split, a car AC, and a refrigeration unit, the ST-382P is aimed at HVAC, automotive, and refrigeration use, so it belongs in a multi-context service bag.
Elitech ILD-200 Advanced Refrigerant Leak Detector
The Elitech ILD-200 is positioned as a professional HVAC tester. It uses an advanced NDIR solid-state sensor with a 10-year sensor life, and the TFT color display shows real-time data with animated indicators. The ruggedized construction and six-hour built-in lithium battery are practical for long install days, and the carrying case keeps the detector ready to grab. For technicians who cover a broad refrigerant list-R-134a, R-404a, R-600a, and R-1234yf are all in the listed support-this is the more thorough tool. The main trade-off is the listed item weight of 2 kg: you will feel it after a full day of climbing around rooftops and crawl spaces.
HVAC Refrigerant Leak Detector Stainless Steel Sensor (ST-382P)
The ST-382P goes the other direction. Its listed specs emphasize speed and reach: a 2-second response time and a 15.5-inch sensing distance, so you can hold the wand away from the fitting and still get a reading. The digital output and measurement accuracy of ±0.1 oz/yr make it useful for finding the small leaks that are easy to miss on a freshly brazed line. It is meant for HVAC, automotive, and refrigeration work, with a modern nylon construction. The listed included component is the leak detector itself, so you may want a separate pouch if you plan to drop it into a larger service bag. If your install job is more about a fast leak sweep and less about detailed diagnosis, this model's speed is what makes it worth a look.
Final choice by use case
For self-contained diagnostic work-where you want a TFT display, long battery life, and broad refrigerant coverage in one kit-the Elitech ILD-200 is the tool to reach for. For quick leak checks on an install day, where response time and sensing distance save you the most climbing up and down a ladder, the ST-382P is the faster companion.
