Leak Saver UV Refrigerant Leak Detection Dye — 3-Pack (Dye Only) for HVAC/R Systems, Fluorescent

Leak Saver UV Dye is a concentrated ultraviolet tracer designed to pinpoint refrigerant leaks quickly in automotive, residential, commercial, and marine HVAC/R systems—this listing contains dye only (no sealant) in a 3-pack.

When you need to find a slow or hidden refrigerant leak fast, bright UV tracer dye is one of the most reliable tools. Leak Saver's dye inject formula is made in the USA and engineered to mix with common refrigerants and oils so the leak site fluoresces under a UV flashlight. You add it through a standard manifold gauge or Leak Shot injector, run the system to circulate the dye, then inspect suspected areas with a UV lamp to visually locate the leak.

How do I add this dye to my HVAC or refrigeration system?

Adding Leak Saver UV Dye is straightforward for anyone familiar with service gauges or charging equipment. Attach a manifold gauge or Leak Shot injector to the system service port, inject the recommended amount of dye, operate the system on a high-cooling cycle for 30–60 minutes to distribute the tracer, and then inspect with a UV light.

• Compatible with standard manifold gauge sets or Leak Shot injectors
• Use 30–60 minutes of run time on max cooling for best circulation
• Automotive systems require a 134a to 1/4" adapter; mini-splits may need a 5/16" adapter
• No special handling like pressurized cans or syringes is required

Which systems and refrigerants will this dye work in?

Leak Saver dye is formulated to be compatible with virtually all refrigerant types (except ammonia) and common compressor oils. It works in central A/C, automotive A/C, ductless mini-splits, commercial refrigeration, heat pumps, and more—useful across residential, commercial, and marine applications.

• Compatible with R410A, R22, R134a, R1234yf, R404A, R290, R600a, and many replacements
• Safe with mineral, PAG, and ester oils and standard system components
• Works on microchannel coils, evaporators, condensers, and fittings
• Do not use in ammonia-based refrigeration systems

Will this product seal leaks or affect system components?

This SKU contains dye only and performs solely as a visual tracer; it does not include any leak sealant. It is formulated to be safe for expansion devices, Schrader valves, hoses, and gauges, but it will not repair or stop refrigerant loss.

• Pure UV dye—no sealing chemicals included
• Safe for TXVs, capillary tubes, hoses, and manifold gauges
• Use sealing products separately if you want a stop-leak solution
• Follow manufacturer service practices after locating leakage

How visible is the dye and how should I inspect the system?

The dye fluoresces intensely under a UV flashlight, making even small leak sites easy to detect in shaded or darkened areas. While the dye can sometimes be seen by eye in bright concentrations, a UV lamp in a dim environment gives the most reliable results.

• Inspect coils, fittings, gaskets, and service ports with a UV flashlight
• Best detection in shaded or darkened spaces for maximum fluorescence
• Use gloves and eye protection during inspection to avoid contamination
• For tough-to-reach areas, consider using inspection mirrors or borescopes

Who this product is for: Leak Saver UV Dye (3 Pack) is ideal for HVAC professionals, refrigeration technicians, automotive mechanics, and knowledgeable DIYers who need a reliable tracer to locate refrigerant leaks quickly. Choose this dye-only option if you already have leak-repair procedures in place or prefer to identify problem areas before deciding on repair methods. Because it’s compatible with a wide range of refrigerants and oils and doesn’t include sealant, it’s also a good choice for service shops that want a dedicated diagnostic tracer to preserve system integrity while pinpointing leaks.