❄️ Seal leaks like a pro, save thousands like a boss!
Leak Saver Direct Inject AC Refrigerant Leak Sealant is a professional-grade, easy-to-use solution designed to permanently seal small refrigerant leaks in HVAC systems up to 5 tons. Compatible with nearly all refrigerants and system types, it uses a patent-pending direct injection formula trusted by HVAC technicians worldwide, with over 3 million units sold since 2015. This safe, mess-free sealant circulates within the system to fix current leaks and prevent future ones, saving costly repairs and system replacements.
| ASIN | B071VMXMLS |
| Best Sellers Rank | 559,592 in Automotive ( See Top 100 in Automotive ) 442 in Automotive Air Conditioning Line Repair Tools |
| Brand | Leak Saver |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,675) |
| Date First Available | 31 May 2018 |
| Item Weight | 90.7 g |
| Item model number | LS-05 |
| Manufacturer | Leak Savers |
| Manufacturer part number | LS-05 |
| Model | LS-05 |
| Product Dimensions | 16.51 x 24.38 x 1.52 cm; 90.72 g |
S**N
Good product
The product made the promise! Highly ecommended.
B**N
Impressive Stuff! (Review updated for 1 year update)
I’ve had a small leak that’s been getting worse over the past couple of years. Started as having to top off every season, then last year it got to where I was starting to lose 1-2lbs every 2 months. This year I decided to buy my own refrigerant and put this leak stop stuff in back in the beginning of April knowing that AC season was upon us. All I’ve got to say is WOW! I haven’t lost any refrigerant since I added this stuff and it’s now the end of September. It got me through the whole summer! Now I’ll be interested to see if the system loses any of its charge when it’s not being used over the winter, which is what’s unfortunately happened over the past 3 winters. Hopefully this time there’ll be no freeze ups when I turn it on next spring… we shall see! **April 16, 2026 update**- It’s now been a year. So far we’ve had 10 days of 80’F+ with 3 of those days being over 90’F, including today, and the AC hasn’t struggled at all. Intermittent flashing noises near the indoor unit did return on the first run of the season about 3 weeks ago, but it only happens every 30 seconds or so. That tells me that it likely lost a few ounces of refrigerant while it wasn’t running over the winter, but it’s not made any impact on its ability to cool and is much better than the usual 2-3lbs of refrigerant it would’ve lost over the winter in years past. Performance is still the same as it was right after I added this stuff along with 3lbs of refrigerant last April. Delta T is averaging 16’F-18’F and cooling cycles are 10-20 minutes. It also still manages to cool the house down 3’F in less than an hour when my thermostat switches the temperature to sleep mode at night. I’m very pleased with how well this product worked and that I seemingly no longer have to deal with a frozen system on the first hot day of the year.
J**N
Good sealer
Seems to work well in a mini split unit.
A**R
👍
100% work 👍👍👍👍
A**R
Very easy to use.
So far this has been in my AC unit for two weeks and no leaks. Working great so far.
Trustpilot
4 days ago
2 weeks ago