Leak Saver Direct Inject Ultimate 3-in-1 Refrigerant Leak Sealer — Treats up to 5 Tons with UV Dye & Moisture Remover

Leak Saver Direct Inject Ultimate 3-in-1 is a professional-grade refrigerant leak sealer that injects into HVAC systems to seal small leaks, remove moisture, and add UV dye for fast leak locating.

Designed for technicians and knowledgeable DIYers, this compact bottle treats most residential and commercial systems up to 5 tons. The formula combines a leak-sealing polymer, a moisture-scavenging component, and an ultraviolet tracer so you can both fix active leaks and detect larger ones. It’s compatible with nearly all refrigerants and oils (excluding ammonia), installs without pressurized aerosol cans, and is intended for systems that retain most of their refrigerant charge during the first seven days after a leak begins.

How does this product actually stop refrigerant leaks?

The concentrate circulates with the refrigerant and reacts where refrigerant meets air or moisture at the leak site. Polymer particles form a localized seal while the moisture remover reduces corrosion-prone water that can worsen leak paths. For best results, the system should retain most of its charge for the treatment to reach the leak.

• Polymer chemistry targets leak openings and hardens in contact with air/moisture.
• Moisture-removing ingredient lowers internal condensation and helps longevity.
• Effective on pinhole and small tube leaks when some refrigerant remains.

Which systems and refrigerants can I use it with?

Leak Saver is formulated for a broad range of HVAC and refrigeration equipment—residential central air, ductless mini-splits, heat pumps, commercial coolers, automotive A/C (with adapter), and more. It works with most modern refrigerants and lubricants, except ammonia-based systems.

• Compatible with R410A, R22, R134a, R1234yf, R404A, R290, R600a and many replacements.
• Safe for TXVs, capillary tubes, Schrader valves, manifold gauges, and hoses.
• Adapters may be required: automotive 134a to 1/4" and mini-split 5/16" to 1/4".

How simple is the installation for technicians or DIYers?

Installation avoids pressurized cans and complex syringes: inject directly using a standard manifold gauge set or the Leak Shot Injection Kit for even easier application. Basic HVAC knowledge and the correct adapter ensure a smooth process; follow the included video guidance for step-by-step help.

• Injects directly into the service port using manifold gauges or an injection kit.
• No messy hoses or aerosol cans required; clean, controlled application.
• Watch product installation videos for adapter and sequence instructions.

What results and limitations should I expect?

When used on systems that retain the majority of their refrigerant for at least seven days after a leak starts, the formula can provide a permanent seal at the leak site. It’s not intended to replace major mechanical repairs, and it cannot seal wide-open leaks or systems that have lost most of their charge.

• Best for pinhole and small tube leaks; larger breaches need mechanical repair.
• Not compatible with ammonia refrigeration systems.
• Works as a preventative circulation treatment to seal future small leaks.

Who is this for? HVAC professionals, service technicians, and experienced DIYers who want a reliable, multi-function treatment for air conditioning and refrigeration systems up to five tons. It’s ideal for routine service trucks, maintenance teams, and property managers who value an integrated leak sealing, moisture control, and UV-tracing solution. For very large leaks, complex coil work, or ammonia systems, pair this product with standard mechanical repairs or consult a certified service professional.