Comparison Chart for Top Ac Leak Sealer
SL | Preview | Product | Score | Action |
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ComStar A/C Zero-Leak, Permanent”Stop Leak” for A/C Systems, Seals Leaks Instantly, Non-Hardening, Polymer-Free, Eco-Friendly, Made in USA, 4 Ounces (90-700) | 9.36 | Check Price |
2 | ![]() |
Leak Saver Direct Inject Refrigerant Leak Sealer – 2022 Updated Sealant Formula for Most HVAC Systems Up to 5 Tons – Made in the USA | 9.74 | Check Price |
3 | ![]() |
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 | 9.74 | Check Price |
4 | ![]() |
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 | 9.74 | Check Price |
5 | ![]() |
Leak Saver: Direct Inject Ultimate 3-in-1 Leak Sealant with Moisture Remover and UV Dye for AC, Refrigeration, and Automotive Systems up to 5 Tons – Compatible with All Refrigerants – Made in The USA | 9.74 | Check Price |
6 | ![]() |
Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, Blue | 9.36 | Check Price |
7 | ![]() |
BlueDevil Products Red Angel A/C Stop Leak | 7.32 | Check Price |
8 | ![]() |
AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit, For Rubber and Metal Leaks in O Rings and Hoses, 3 Oz, ACPMRL3 | 9.36 | Check Price |
9 | ![]() |
Bar’s Leaks 1186 Liquid Aluminum Stop Leak – 16.9 oz , Gray | 9.36 | Check Price |
10 | ![]() |
InterDynamics Certified AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit, for Rubber and Metal Leaks in O Rings and Hoses, 3 Oz, CERT325-6 | 9.36 | Check Price |
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Our Recommendation on the 10 Best Ac Leak Sealer
1. ComStar A/C Zero-Leak, Permanent”Stop Leak” for A/C Systems, Seals Leaks Instantly, Non-Hardening, Polymer-Free, Eco-Friendly, Made in USA, 4 Ounces (90-700)
Features:
- Compatible with POE-based, PAG-based, and mineral-oil-based mobile AC lubricants
- Is a specially developed product for preventing minor leaks in evaporators, condensers, gaskets, and seals
- Environmentally safe & suitable for use in automotive, commercial, and residential A/C applications
- Designed to not harm A/C systems with non-hardening, polymer-free characteristics
- Used for preventive maintenance and left in an operating system
Additional Info:
Color | Red |
2. Leak Saver Direct Inject Refrigerant Leak Sealer – 2022 Updated Sealant Formula for Most HVAC Systems Up to 5 Tons – Made in the USA
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.
- A PERMANENT FIX FOR LEAKS: 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.
- OVER THREE MILLION UNITS SOLD: With over 3 million units sold of this sealant formula since 2015, we are the most reliable leak sealant among HVAC professionals. Super concentrated and made to work with all types of refrigerants, it’s compatible with all types of refrigerants and oils (except ammonia).
- YOUR SATISFACTION IS OUR PRIORITY: We’re so sure this will seal your next leak that if it doesn’t, contact us for another at no cost (must be installed by certified HVAC techs).
- MADE BY HVAC PROFESSIONALS: And used by them. Use Leak Saver on the following systems: central AC, mini split AC, cassette AC, car, refrigerated truck, home refrigerator, commercial refrigerator, boat, rv, ice machine, refrigeration racks, chillers, refrigeration condenser, cold rooms, and more.
Additional Info:
Height | 0.6 |
Width | 9.6 |
Length | 6.5 |
Weight | 0.2 |
3. 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
Features:
- The fastest way to inject Leak Saver Direct Inject brand products! (Sold Separately)
- REFILL ONLY with Leak Shot Refrigerant Grade CO2 Refill Cartridges. Other brand cartridges may not function with the Leak Shot and my contaminate your system.
- Easily blow out clogged and dirty condensate drain lines on central A/C’s and mini splits.
- Kit includes: Leak Shot Injection Gun, 3x Leak Shot Refrigerant Grade CO2 Cartridges (multiple shots per cartridge), 3/4” Rubber Condensate Line Adapter, 1/2” Rubber Condensate Line Adapter, Extension Hose
Additional Info:
Color | Leak Sealant Injector and Condensate Line Blaster |
Height | 1 |
Width | 9.6 |
Length | 6.5 |
4. 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
Features:
- 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.
- 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.
- 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.
- 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.
Additional Info:
Height | 9.5 |
Width | 0.6 |
Length | 6.5 |
Weight | 0.1984160358 |
5. Leak Saver: Direct Inject Ultimate 3-in-1 Leak Sealant with Moisture Remover and UV Dye for AC, Refrigeration, and Automotive Systems up to 5 Tons – Compatible with All Refrigerants – Made in The USA
Features:
- 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.
- OVER THREE 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 works similarly 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.
- 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.
- WORKS WITH ALL SYSTEMS AND REFRIGERANTS: Compatible with all systems, refrigerants (except ammonia), and oils. Useit on the following systems: central AC, mini split AC, cassette AC, car, refrigerated truck, home refrigerator, commercial refrigerator, boat, rv, ice machine, refrigeration racks, chillers, refrigeration condenser, cold rooms, and more. It also works with all refrigerants including R410A Freon, R22 and replacements, R134A, R1234yf, R404A, R290, R600a, and more.
- 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!
6. Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, Blue
Features:
- Stop refrigerant leaks permanently
- Safe delivery tool
- Restore AC performance quickly
- triple action sealant
- Low loss safety fitting
Additional Info:
Color | Blue |
Height | 10 |
Width | 1.5 |
Length | 2 |
7. BlueDevil Products Red Angel A/C Stop Leak
Features:
- Safe to use and best of all — it’s a permanent seal
- Remarkable ability to repair and seal leaks in condensers, evaporators, connection hoses, gaskets, and O-rings
- Contains no solid or particulate matter that will clog the A/C system, or harm a recovery unit
- Forms a chemical weld sealing leaks in both R-12 or R-134a systems
- Guaranteed
Additional Info:
Color | Red |
Height | 3.9 |
Width | 2 |
Length | 0.9 |
Weight | 0.11 |
8. AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit, For Rubber and Metal Leaks in O Rings and Hoses, 3 Oz, ACPMRL3
Features:
- Contains approximately 1. 5oz of refrigerant and 1. 5oz of additives
- Seals rubber leaks in O-rings, gaskets, and hoses
- With red dye for detecting leaks too large to repair
- Reusable dispensing hose designed for compliance and to work only with R-134a cans with self-sealing valve can tops
- Repairs metal leaks in evaporators, condensers, compressors, accumulators and receiver dryers
Additional Info:
Color | Black |
Weight | 0.62 |
9. Bar’s Leaks 1186 Liquid Aluminum Stop Leak – 16.9 oz , Gray
Features:
- Repairs gasket leaks
- Seals freeze plug leaks
- Bar’s Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.
- Seals radiator leaks
- Special Shipping Information: This item cannot be returned and has additional shipping restrictions
Additional Info:
Color | Gray |
Height | 7.4 |
Width | 2.6 |
Length | 2.6 |
Weight | 1.2 |
10. InterDynamics Certified AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit, for Rubber and Metal Leaks in O Rings and Hoses, 3 Oz, CERT325-6
Features:
- Comes with recharge hose
- Safe for all R-134a systems
- Professional grade
- Seals rubber leaks in hoses O-rings and gaskets
- Seals metal leaks in condensers, evaporators, accumulators, receiver and driers
Best Ac Leak Sealer Buying Guide
Do you find finding a top Ac Leak Sealer a stressful experience? Have you ever felt unsure which model to choose when you are considering buying Ac Leak Sealer in general? It’s sometimes all you require. This is the reason we’re here to assist you!
Value of the Brand:
Why would you purchase an inexpensive brand that is not able to meet your expectations? There’s a greater chance it won’t be solid. A brand with a reputation is more focused on its reputation and its longevity in comparison to other.
Brands like Top Ac Leak Sealer differ from the rivals due to their distinctive qualities. This is why we hope that you will find something from our list that you will like.
These features include:
The only feature you will require are a few useful ones. When selecting Best Ac Leak Sealer we look at all the important aspects.
Description:
If you have numbers in your possession you are able to take precise measurements of quality. We at our company are determined to discover products that stand out but also strike a good level of balance between the two.
Review from Customers:
Customer reviews provide the user with impartial and truthful details about Ac Leak Sealer reviews, which have come directly from people who actually used the software.
Sturdiness:
There is a strong connection between the reliability of your product and its durability. Your Ac Leak Sealer can last for many months as it is robust and durable.
Accessibility:
New products are generally introduced to replace previous products. The product that is being introduced has likely been modified in some way and might therefore come with new features.
Last Thoughts
Here are the essentials you need to know before buying the Best Ac Leak Sealer. We wish you the best with your new purchase. If you have any feedback please do not hesitate to inform us.

Shawn Johnson has been traveling for over 20 years. Born in America, He has been a world traveler since young. He already visited 15 countries. His next travel destination may be Grenada, Caribbean. His favorite tour has been exploring Salina Island with his friends. He became travel lovers just after college when he went to tour around Europe with his family. Shawn completed his bachelor’s of degree from the University of California and his masters of education from the University of South California. Both of the degrees are on Engineer.