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

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

This kit bundles three pre-measured doses of Leak Saver’s Direct Inject formula so you can treat most residential and light commercial HVAC systems up to 5 tons. The concentrated solution combines a polymeric sealant, moisture remover, and tracer dye into one easy installation, designed to circulate with refrigerant and target leak sites where air and moisture contact the escaping refrigerant. Installation is straightforward with common manifold gauge setups or Leak Saver’s optional Leak Shot Injection Kits, and the formula is compatible with a wide range of refrigerants and oils (except ammonia).

How quickly does this product stop an active refrigerant leak?

The sealant begins to work as the treated refrigerant reaches the leak and encounters air or moisture at the leak path. Small-to-moderate leaks that retain most of the refrigerant charge typically show sealing within days; larger losses may require repair or multiple treatments. This is not a patch for severely compromised systems but is effective for many common service leaks.

• Sealing action activates at contact with air and moisture.
• Small leaks often seal within a few days under normal operation.
• Not intended for systems that lose a full charge in under 7 days.
• Can be used preventatively to help seal future slow leaks.

Will it work with my HVAC or vehicle system and refrigerant type?

Leak Saver Direct Inject is formulated to be compatible with most HVAC equipment, automotive A/C, minisplits, heat pumps, and many refrigeration systems, handling common refrigerants and oils except ammonia. Verify adapter needs for automotive R-134a or 5/16" minisplit fittings before injection. Always follow system manufacturer constraints and local regulations.

• Compatible with R-410A, R-22 and replacements, R-134a, R1234yf, R404A, R290, R600a, and more.
• Works with most oils and system components like TXVs, capillary tubes, and Schrader valves.
• Adapter required for automotive 134a to 1/4" and some minisplits (5/16" to 1/4").
• Not compatible with ammonia-based systems.

How easy is it to install, and what tools do I need?

Installation is designed to be simple: connect the product inline via a manifold gauge set or use the Leak Shot Injection Kit for a faster, cleaner injection process. No pressurized cans, messy syringes, or specialized hoses are required. For vehicle A/C or certain minisplits, obtain the correct charging adapter before starting.

• Uses common manifold gauge sets or optional Leak Shot kit.
• No specialized pressurized canisters or syringes needed.
• Follow video instructions for step-by-step guidance.
• Have R-134a automotive adapter or minisplit adapter if required.

Who is this for? Leak Saver Direct Inject Ultimate 3-Pack is intended for HVAC professionals, service techs, and experienced DIYers maintaining residential or light commercial systems up to 5 tons who want a time-saving, multi-purpose treatment. It’s ideal for maintenance crews that want a product that both troubleshoots (via UV dye) and treats moisture and active leaks without multiple separate injections. If you have frequent slow leaks, want to minimize downtime, or need a trusted product used widely across the trade, this kit offers a practical, field-proven option. Always evaluate system condition first: systems losing a full charge rapidly, or with major mechanical damage, should be repaired conventionally rather than relying solely on sealer treatment.