What you need:

• Leak Saver Direct Inject
• Injector Hose Kit
• Correct service port adapter (5/16" to 1/4" 410A mini split adapter included)
• Running system

Installation steps:

1. Start the system and make sure the compressor is on and stays on.
2. With both valves closed, connect the injector hose to the High Side service port.
3. Purge the hose and then quickly connect the other end to the male end of the Leak Saver.
4. Attach the Leak Saver to the Low Side service port of the system.
5. Open the valve to allow system pressure to push the product into the system. Only keep the valves open as long as it takes to fully inject the sealant.
6. Close the valve on the high side and let the refrigerant bleed back into the low side. Close the valve on the low side and remove carefully.

After installation:
Let the system run for about one hour so the product can circulate and seal the leak.

What you need:

• Leak Saver Direct Inject
• Manifold gauge set
• Proper service port adapters, if needed
• Running system

CAUTION: ALWAYS WEAR EYE PROTECTION

STEP 1: Turn the system on and make sure the compressor is running. If it is a heat pump, make sure it is in COOLING mode. BEFORE ANY OTHER CONNECTION, IT IS IMPORTANT TO FIRST connect the female fitting of the LEAK SAVER to the Low Side Service Port of the system.

STEP 2: Make sure both valves on the manifold are closed. Connect the High Side Hose (Red) to the High Side Service Port. Briefly open the High Side Manifold Valve to purge the hoses and then quickly connect the Center Hose (Yellow) to male fitting of the LEAK SAVER.

STEP 3: Briefly open the High Side Manifold Valve to inject the LEAK SAVER into the system. As soon as the tube is clear, close the High Side Manifold Valve. Wait one minute for the gauges to equalize and then disconnect the empty LEAK SAVER tube and discard or recycle. Let the system run on the coldest setting for at least ONE HOUR to allow product to fully circulate.

What you need:

• Leak Saver Direct Inject
• Manifold gauge set
• Refrigerant tank
• Correct adapters for the system
• Running system

CAUTION: ALWAYS WEAR EYE PROTECTION

STEP 1: Turn the system on and make sure the compressor is running. If it is a heat pump, make sure it is in COOLING mode. BEFORE ANY OTHER CONNECTION, IT IS IMPORTANT TO FIRST connect the female fitting of the LEAK SAVER to the Low Side Service Port of the system.

STEP 2: Make sure both valves on the manifold are closed. Connect the Yellow Hose (Center Hose) to the refrigerant tank. Briefly open the refrigerant tank valve to purge the hoses and then quickly connect the Low Side Hose (Blue Hose) to male fitting of the LEAK SAVER.

STEP 3: Briefly open the Low Side Manifold Valve to inject the LEAK SAVER into the system. As soon as the tube is clear, close the Low Side Manifold Valve. Wait one minute for the gauges to equalize and then disconnect the empty LEAK SAVER tube and discard or recycle. Let the system run on the coldest setting for at least ONE HOUR to allow product to fully circulate.

Use this method when installing Leak Saver into an automotive A/C system with refrigerant pressure.

What you need:

• Leak Saver Direct Inject
• Automotive A/C charging hose or manifold setup
• Correct low-side quick coupler
• Proper refrigerant for the vehicle
• Running vehicle A/C system

CAUTION: ALWAYS WEAR EYE PROTECTION

STEP 1: Turn the system on and make sure the air conditioner

compressor is running. BEFORE ANY OTHER CONNECTION, IT IS IMPORTANT TO FIRST connect the female fitting of the LEAK SAVER to the Low Side Car Adapter. Connect the Low Side Car Adapter to the Low Side A/C Service Port of the car.

STEP 2: Make sure both valves on the manifold are closed. Connect the Center Hose (Yellow) to the refrigerant tank. Briefly purge the hoses and connect the Low Side Hose (Blue) to the male end of the Leak Saver.

STEP 3: Briefly open the Low Side Manifold Valve to inject the LEAK SAVER into the system. As soon as the tube is clear, close the Low Side Manifold Valve. Wait one minute for the gauges to equalize and then disconnect the empty LEAK SAVER tube and discard or recycle. Let the system run on the coldest setting for at least 30 MINUTES to allow product to fully circulate.

NOTE: You can also use refrigerant can with a can tap to push the LEAK SAVER into the system. However, you must use a hose with a 1/4” connection with valve core depressor to be compatible with the 1/4” male end of the LEAK SAVER.

Use the Leak Shot HVAC injector when you want a fast, clean installation using CO2 pressure to push Leak Saver into an HVAC or refrigeration system.

Best for:
HVAC and refrigeration systems where a quick CO2-powered injection method is preferred.

What you need:

• Leak Shot HVAC injector
• Leak Shot CO2 cartridge
• Leak Saver Direct Inject
• Correct service port adapter, if needed
• Running system

Installation steps:

1. Attach the Leak Saver cartridge to the Leak Shot injector.
2. Install the CO2 cartridge into the injector.
3. Connect the injector hose to the system service port.
4. Purge the hose if needed.
5. Activate the injector to push the Leak Saver into the system.
6. Disconnect the injector safely after the product has been injected.

After installation:
Let the system run for about one hour to fully circulate the product.

Use the Leak Shot Automotive injector to install Leak Saver into a vehicle A/C system using the included automotive low-side quick coupler.

Best for:
Automotive A/C systems using a standard 134A low-side quick coupler.

What you need:

• Leak Shot Automotive injector
• Leak Shot CO2 cartridge
• Leak Saver Direct Inject
• 134A low-side quick coupler
• Running vehicle A/C system

Installation steps:

1. Start the vehicle.
2. Turn the A/C to maximum cooling.
3. Attach the Leak Saver cartridge to the Leak Shot injector.
4. Install the CO2 cartridge into the injector.
5. Connect the low-side quick coupler to the vehicle’s low-side service port.
6. Activate the injector to push Leak Saver into the A/C system.
7. Disconnect safely once the product has been injected.

After installation:
Keep the A/C running so the product can circulate through the system.

Read before installation:

• Leak Saver is designed for small refrigerant leaks.
• If the system loses its full refrigerant charge very quickly, the leak may be too large for sealant alone.
• Always use the correct adapter for the system being serviced.
• Automotive systems may require a 134A to 1/4” adapter.
• Mini-split and 410A systems may require a 5/16” to 1/4” adapter.
• Do not inject into the wrong service port.
• Always purge hoses before injecting product into the system.
• Use proper safety equipment when working with pressurized refrigerant systems.
• Follow all local refrigerant-handling rules and service procedures.
• HVAC, refrigeration, and automotive A/C work should be performed by qualified personnel.
• Always follow the product label, user manual, and Safety Data Sheet before use.

When not to use:
Do not rely on sealant alone for large leaks, damaged components, or systems that cannot hold refrigerant long enough for the product to circulate.

Before using Leak Saver or Leak Shot products, review the Safety Data Sheet and product manual for the specific product you are installing.

The Safety Data Sheet includes important information about:

• Safe handling
• Storage
• Personal protective equipment
• First aid
• Product ingredients
• Disposal
• Emergency procedures

The active ingredient works similarly to the blood in your body. When no leaks exist, it circulates freely with the refrigerant inside the system. When there is a small leak, the active ingredient will react with the air and moisture at the leak site to make a permanent seal. Any remaining active ingredient in the system will remain there to seal future leaks.

Our sealant formula in Leak Saver has been developed and refined over 20 years. Since 2015, more than 4 million units of this formula have been sold. Leak Saver is the most trusted refrigerant leak sealant available on the market. It is safe for all systems, tools, and expansion valves (TXV, Capillary tube, etc.). 

That being said, the active ingredient reacts with air and moisture at the leak site to make the seal. If you suspect your system may have moisture inside the system from improper handling, we recommend that you recover the refrigerant and pull a vacuum. For minimal amounts of moisture, you can use our Leak Saver Moisture Remover or Leak Saver Ultimate all in one.

Leak Saver products can be used with all refrigerant-based systems such as residential HVAC, automotive A/C, refrigeration, RV, marine, and some specialty applications. It is compatible with all refrigerants (except ammonia) and all oils.

We offer products for systems under 1 Ton (12,000 BTU, 3.5kW, Mini Size), up to 5T (60K BTU, 17.6kW, Standard Size), and for larger systems. We offer products with added leak detection UV Dye as well as Moisture Removers. Those are compatible with all systems. If you are unsure which version you need, contact support before ordering.

Leak Saver installs with standard manifold gauges. Alternatively, you can also use our Leak Saver Injector Hose or Leak Shot gun to inject it into the system. The Leak Saver has a 1/4” male and 1/4” female connection. Certain 410A systems (Mini Splits) may require a 5/16” to 1/4” adapter. Automotive systems will need R134a or R1234YF quick connect to 1/4” adapters. If you are not sure your setup matches the product, contact support before purchasing or opening the item.

You can inject Leak Saver with a partial charge or full charge. If injecting on a partial charge, make sure that there is enough refrigerant in the system that the compressor can turn on and stay on. After injecting, you need to run the system for 60 minutes on the lowest setting (compressor on) to fully circulate the sealant and seal leaks.

If you are using manifold gauges or our Leak Saver Injector Hose Kit, you will need the system on. The pressure differential is what pushes the sealant in. If you are using a Leak Shot injector gun, you can inject with the system off.

No. Leak Saver is intended for small leaks only where the entire refrigerant charge is not lost in under 7 days. If your system loses charge in less than 7 days, it has a large leak. In this case, you can use our products with UV Dye to help locate and repair the leak. However, the leak may be too large to be sealed by our sealant.

In many cases, a follow-up dose may be considered if the first application clearly improved the situation. If there was no improvement, the leak may be too large for sealants, and you can consider using UV Dye or leak detection bubbles to find and repair the leak.

A bubble inside the tube is perfectly normal and is dry gas used to ensure consistency in the filling process. It will not affect the system or effectiveness of the product.

No. Our product is “polymer free” while circulating in the system and while inside the tube.

Keep unopened product sealed in its original packaging and store it in a cool, dry place. Avoid opening it until you are ready to use it.

Yes. Please sign up for trade pricing by clicking the link in the menu above or by contacting us directly.

Product application should be handled by a qualified HVAC/R professional or by someone already familiar with the system, the required service tools, and all applicable local requirements.

We stand behind our products 100%. If you are a service professional and you used Leak Saver on a small leak where the refrigerant does not completely leak out in under 7 days, we can provide a free replacement unit on your next order.