Our Direct Inject HVAC leak sealer is the perfect first line of defense against leaks in commercial HVAC units. Proven in over 3 Million applications, it is the quickest and most straightforward freon leak sealer to install. The sealant formula travels through the HVAC system with the refrigerant to and reacts with the air, moisture, and atmospheric pressure at the leak site to create a permanent seal. Any unreacted sealant remains in the system to seal future leaks. The refrigerant with sealant is handled and disposed of the same way as any refrigerant without sealant. Trusted by Commercial HVAC technicians across the globe. 1x Leak Saver is good for systems up to 5 Tons. 2x can seal up to 10 Tons and so on.