If you are searching for the best hvac leak stop then you landed on the right page. Here we have compiled a list of the top hvac leak stop.
We have spent around 39 hours to find the right option for you and based on our research TSI Supercool 28399 HVAC Leak Stop Syringe with Application Hose, 2 fl. oz. (60 mL) is our top pick for you. This is one of the best products currently available in the market. However, if you don’t want to spend extra then we have another great option for you is TSI Supercool 28399 HVAC Leak Stop Syringe with Application Hose, 2 fl. oz. (60 mL). Below is a review of some of the best hvac leak stop, together with their specifications and functions. So without further waiting, Let’s dive right in.
Best hvac leak stop
Image
Product Title
Score
Leak Saver Direct Inject AC Leak Sealer | AC Stop Leak for Most HVAC Systems Up to 5 Tons | Works with All Systems & AC Refrigerants | Made in The USA
Buy Now
Buy Now
9.9
Leak Saver Direct Inject UV – Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks – for AC, Refrigeration, and Automotive Systems Up to 5 Tons – Compatible with All Refrigerants
Buy Now
Buy Now
9.5
LEAK SAVER Direct Inject Ultimate 3-in-1 | AC Refrigerant Leak Sealer | with UV Dye & Moisture Remover | for Most HVAC Systems Up to 5 Tons – Professional AC Leak Sealer – AC Stop Leak
Buy Now
Buy Now
9.3
Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, One Size Treats Systems 2 to 7.5 Tons
Buy Now
Buy Now
8.5
RectorSeal AC Leak Freeze Magic Frost with 1/4″” Adapter 45322 Leak Sealant, Easy Application, HVAC, 0.5 oz.
Buy Now
Buy Now
7.4
Leak Saver – Leak Shot HVAC – Leak Sealant Injector and Condensate Line Blaster – Non-Contaminating CO2 Cartridges – for A/C and Mini Splits – Systems Up to 5 Tons
Buy Now
Buy Now
7.3
ENVIRO-SAFE Direct Inject ProSeal XL4 1.5-5 ton Inject Stop Leak R-22 Home Contractor 3 Pack #2100AI-5CP
Buy Now
Buy Now
6.3
Leak Saver Direct Inject AC Leak Sealer | AC Stop Leak for Most HVAC Systems Up to 5 Tons | Works with All Systems & AC Refrigerants | Made in The USA
Leak Saver Direct Inject AC Leak Sealer | AC Stop Leak for Most HVAC Systems Up to 5 Tons | Works with All Systems & AC Refrigerants | Made in The USA
$35.95
in stock
2 new from $35.95
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- STOP LEAKS PERMANENTLY - The Leak Saver can permanently seal small refrigerant leaks where the complete refrigerant charge is not lost within 7 days. When a leak occurs, the Leak Saver reacts with the air and moisture at the leak site to permanently seal the leak. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks
- WORKS WITH ALL SYSTEMS INCLUDING CARS - Our product is compatible with all systems, refrigerants (except ammonia), car refrigerants, and oils. It is great for central air conditioners, automotive air conditioners, refrigerators, ductless mini-splits, heat pumps, geothermal heat pumps, commercial refrigeration systems, micro channel coils and more. It also works with all refrigerants including R410A Freon, R22 and replacements, R134A , r1234yf, R404A, R290, R600a, and more
- STRAIGHTFORWARD INSTALLATION - No more fussing with messy syringes, hoses, or pressurized cans. The Leak Saver HVAC sealant injects directly and easily into the system with a basic manifold gauge set or even easier with our Leak Shot Injection Kits. NOTE: for automotive systems, you will still need the standard 134A to 1/4” charging adapter. Mini-splits may require a 5/16” to 1/4” charging adapter. You can see our straightforward installation videos below
- SAFE FOR ALL TOOLS AND PARTS - Our HVAC leak sealer is safe for all manifold gauges, hoses, expansion valves (TXVs, TEVs, capillary tubes, etc), Schrader valves, and anything needed to service your system. Adapter required for mini splits (5/16" to 1/4") and automotive systems ( 134A to 1/4")
- THE MOST TRUSTED - The numbers don’t lie! With more than 4,000,000 units sold of our air conditioner leak sealer formula since 2015, we are the most trusted leak sealant among HVAC professionals. Proudly made in the USA. We stand 100% behind the quality of our products. If for any reason you are not satisfied with your order, reach out to us and we will make it right
Leak Saver Direct Inject UV – Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks – for AC, Refrigeration, and Automotive Systems Up to 5 Tons – Compatible with All Refrigerants
Leak Saver Direct Inject UV - Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks - for AC, Refrigeration, and Automotive Systems Up to 5 Tons - Compatible with All Refrigerants
$36.95
in stock
2 new from $36.95
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- THE EASIEST INJECTION METHOD: No more fussing with messy syringes, hoses, or pressurized cans. The Leak Saver injects directly and easily into the system with a basic manifold gauge set or even easier with our Leak Shot Injection Kits. Note: for automotive systems, you will still need the standard 134A to 1/4” charging adapter. Mini-splits may require a 5/16” to 1/4” charging adapter.
- MORE THAN 3 MILLION UNITS SOLD SINCE 2015: The Leak Saver can permanently seal small refrigerant leaks where the complete refrigerant charge is not lost within 72 hours. It’s similar to how blood in your body reacts to a cut. When a leak occurs, the Leak Saver reacts with the air and moisture at the leak site to permanently seal the leak. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks.
- WITH ADDED UV DYE FOR FINDING LARGE LEAKS: Seal it or find it! If you have a leak that is simply too large for leak sealants to seal, the added UV Dye will light up brightly at the leak site when using a UV flashlight.
- COMPATIBLE WITH ALL SYSTEMS AND REFRIGERANTS: : The Leak Saver UV is compatible with all systems, refrigerants (except ammonia), and oils. It is great for central air conditioners, car and automotive air conditioners, refrigerators, ductless mini-splits, heat pumps, geothermal heat pumps, commercial refrigeration systems, micro channel coils and more. It also works with all refrigerants including R410A Freon, R22 and replacements, R134A, r1234yf, R404A, R290, R600a, and more.
- YOUR SATISFACTION IS OUR PRIORITY: We stand behind the effectiveness 100%. If for any reason you are not satisfied with your product, please contact us and we will make it right.
LEAK SAVER Direct Inject Ultimate 3-in-1 | AC Refrigerant Leak Sealer | with UV Dye & Moisture Remover | for Most HVAC Systems Up to 5 Tons – Professional AC Leak Sealer – AC Stop Leak
LEAK SAVER Direct Inject Ultimate 3-in-1 | AC Refrigerant Leak Sealer | with UV Dye & Moisture Remover | for Most HVAC Systems Up to 5 Tons - Professional AC Leak Sealer - AC Stop Leak
$46.95
in stock
2 new from $46.95
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- 3-IN-1 SEALANT + MOISTURE REMOVER + UV DYE – Our proven leak sealant now includes moisture remover and UV dye for the complete system treatment! Now, you can seal your leak, remove system moisture, or find large leaks with the UV Dye...all in one easy to install package!
- STOP LEAKS PERMANENTLY - The Leak Saver can permanently seal refrigerant leaks where the complete refrigerant charge is not lost within 7 days. When a leak occurs, the Leak Saver reacts with the air and moisture at the leak site to permanently seal the leak. When used for preventative maintenance, the active ingredient circulates safely in the system to seal future leaks
- WORKS WITH ALL SYSTEMS & REFRIGERANTS INCLUDING CARS - Our product is compatible with all systems, refrigerants (except ammonia), car refrigerants, and oils. It is great for central air conditioners, automotive air conditioners, refrigerators, ductless mini-splits, heat pumps, geothermal heat pumps, commercial refrigeration systems, micro channel coils and more. It also works with all refrigerants including R410A Freon, R22 and replacements, R134A , r1234yf, R404A, R290, R600a, and more
- STRAIGHTFORWARD INSTALLATION - No more fussing with messy syringes, hoses, or pressurized cans. The Leak Saver HVAC sealant injects directly and easily into the system with a basic manifold gauge set or even easier with our Leak Shot Injection Kits. NOTE: for automotive systems, you will still need the standard 134A to 1/4” charging adapter. Mini-splits may require a 5/16” to 1/4” charging adapter. You can see our straightforward installation videos below
- SAFE FOR ALL TOOLS AND PARTS - Our HVAC leak sealer is safe for all manifold gauges, hoses, expansion valves (TXVs, TEVs, capillary tubes, etc), Schrader valves, and anything needed to service your system. Adapter required for mini splits (5/16" to 1/4") and automotive systems ( 134A to 1/4")
TSI Supercool 28399 HVAC Leak Stop Syringe with Application Hose, 2 fl. oz. (60 mL)
TSI Supercool 28399 HVAC Leak Stop Syringe with Application Hose, 2 fl. oz. (60 mL)
$26.40
in stock
4 used from $14.62
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- 2-Ounce Syringe Treats Up to 6 Ton Units.Fit Type: Universal Fit
- Permanently Seals Leaks in A/C and Refrigeration Systems
- Does Not Contain Polymers, Will Not Harm A/C System Or Components
- Additive Package Protects Against Future Corrosion
- Compatible with All Lubricants and Refrigerants
Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, One Size Treats Systems 2 to 7.5 Tons
Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, One Size Treats Systems 2 to 7.5 Tons
$67.90 in stock
31 new from $67.90
Amazon.com
as of February 5, 2025 9:08 pm
Features
- Concentrated formula means less material in system
- Clear tube so you can see the sealant go in
- No need to pump down R-410A units
- Perfect for split systems, heat pumps, microchannel coils, packaged units, and mini splits
- One time use
Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, 1.5 oz, Blue
Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, 1.5 oz, Blue
$51.81 in stock
7 new from $46.21
6 used from $37.63
6 used from $37.63
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- APPLICATION: AC Leak Freeze PRO refrigerant leak sealant with new leak seeking nano particles creates a stronger dual sealant; nano particles are non-polymer and non-reactive technology that fills cracks and imperfections in hvac coils
- EASY TO APPLY: Standard 1/4" ac leak freeze adapter; ready to use and safe for hvac systems; oem approved and professional install is recommended; restores AC performance quickly
- STOP LEAKS PERMANENTLY: AC Leak Freeze will stop leaks of refrigerant gas in hvacr air conditioning and refrigeration systems in homes and commercial buildings; ac leak freeze revitalizes ac and refrigeration systems by permanently sealing small, hard-to-find micro leaks
- SPECIFICATIONS: 1.5 oz pro nano; triple action sealant; polymer free, non-flammable and non-toxic; oem approved and safe for hvac systems; low loss safety fitting
- FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets
Rectorseal 45317 Leak Sealer, 1.5 oz, Green
Rectorseal 45317 Leak Sealer, 1.5 oz, Green
$59.75 in stock
5 new from $59.75
3 used from $29.78
3 used from $29.78
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- APPLICATION: AC Leak Freeze PRO refrigerant leak sealant with new leak seeking nano particles creates a stronger dual sealant; nano particles are non-polymer and non-reactive technology that fills cracks and imperfections in hvac coils
- EASY TO APPLY: Standard 1/4" AC leak freeze adapter; ready to use and safe for HVAC systems; OEM approved and professional install is recommended
- STOP LEAKS PERMANENTLY: AC leak freeze will stop leaks of refrigerant gas in HVACR air conditioning and refrigeration systems in homes and commercial buildings; AC leak freeze revitalizes AC and refrigeration systems by permanently sealing small, hard-to-find micro leaks
- SPECIFICATIONS: 1.5 oz Pro Nano with magic frost; triple action sealant; polymer free, non-flammable and non-toxic; OEM approved and safe for HVAC systems
- FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets
RectorSeal AC Leak Freeze Magic Frost with 1/4″” Adapter 45322 Leak Sealant, Easy Application, HVAC, 0.5 oz.
RectorSeal AC Leak Freeze Magic Frost with 1/4"" Adapter 45322 Leak Sealant, Easy Application, HVAC, 0.5 oz.
$78.98 in stock
6 new from $78.98
1 used from $47.80
1 used from $47.80
Amazon.com
as of February 5, 2025 9:08 pm
Features
- APPLICATION: AC Leak freeze is the ideal product for a/c unit repair and refrigeration repair; ac leak freeze will stop leaks of refrigerant gas in hvacr air conditioning and refrigeration systems in homes and commercial buildings
- EASY TO APPLY: Single use, disposable ac leak freeze syringe; ready to use and safe for hvac systems; oem approved and easy to apply, Safe to use on system components, service, and test equipment
- STOP LEAKS PERMANENTLY: AC Leak Freeze will stop leaks of refrigerant gas in hvacr air conditioning and refrigeration systems in homes and commercial buildings; ac leak freeze revitalizes ac and refrigeration systems by permanently sealing small, hard-to-find micro leaks
- SPECIFICATIONS: 1.5 oz leak freeze cartridge with magic frost and 1/4" adapter; polymer free, non-flammable and non-toxic; oem approved and safe for hvac systems
- FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets
Leak Saver – Leak Shot HVAC – Leak Sealant Injector and Condensate Line Blaster – Non-Contaminating CO2 Cartridges – for A/C and Mini Splits – Systems Up to 5 Tons
Leak Saver - Leak Shot HVAC - Leak Sealant Injector and Condensate Line Blaster - Non-Contaminating CO2 Cartridges - for A/C and Mini Splits - Systems Up to 5 Tons
$37.95
in stock
2 new from $37.95
Free shipping
Amazon.com
as of February 5, 2025 9:08 pm
Features
- BLAST AWAY CLOGS - Use our CO2 powered drain blaster to unclog HVAC condensate drain lines with ease. Includes 3 CO2 cartridges.
- AC LEAK SEALER INJECTOR - Our co2 cartridge drain gun doubles as an injector for our Leak Saver Direct Inject Leak Sealants & additives. (SEALANT SOLD SEPARATELY)
- NON-CONTAMINATING CO2 CARTRIDGES - Our cartridges are specially formulated to not contaminate HVAC and refrigeration systems. Please only refill with our Leak Shot CO2 Refrigerant Grade refills.
- KIT INCLUDES - 1 x Leak Shot Injection Gun | 3 x Refrigerant Grade CO2 Cartridges (multiple shots per cartridge) | 1 x 3/4in Rubber Condensate Line Adapter | 1 x 1/2in Rubber Condensate Line Adapter | 1 x Flexible Extension Hose.
- 100% SATISFACTION - We stand behind the quality and effectiveness of our products 100%. If for any reason you are not satisfied, please contact Leak Saver directly and we will make it right.
ENVIRO-SAFE Direct Inject ProSeal XL4 1.5-5 ton Inject Stop Leak R-22 Home Contractor 3 Pack #2100AI-5CP
ENVIRO-SAFE Direct Inject ProSeal XL4 1.5-5 ton Inject Stop Leak R-22 Home Contractor 3 Pack #2100AI-5CP
$83.00
in stock
7 new from $77.02
Amazon.com
as of February 5, 2025 9:08 pm
Features
- Concentrated
- No Pump Down
- For use in heat pumps, split and mini split systems, packaged units, and micro-channel coils
- 1.5-5 Ton
- Compatible with all refrigerants, except ammonia
In this article, we have reviewed the best hvac leak stop for our readers. We hope you get the perfect hvac leak stop from our above list. If you didn’t find your desired one then check out LEAK SAVER Direct Inject Ultimate 3-in-1 | AC Refrigerant Leak Sealer | with UV Dye & Moisture Remover | for Most HVAC Systems Up to 5 Tons – Professional AC Leak Sealer – AC Stop Leak, one of the most sold items in the market.
