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Leak Saver Leak Shot Automotive - Leak Sealant and Additive Injector - Made for Specialized Automotive Air-Conditioner System Repair - Non-Contaminating CO2 Cartridges - USA Made
$31.95
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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

4.3 4.3 out of 5 stars 1,445 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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$36.95
on 3 select item(s) promo code: 05LEAKSAVE Shop items  on 3 select item(s) Shop items  
Extra Savings Save 3% on 2 select item(s) promo code: 02LEAKSAVE 2 Applicable Promotion(s)
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Standard (Up to 5 Tons)
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Purchase options and add-ons

  • 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.
› See more product details

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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

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Leak Saver Direct Inject UV - Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks - for AC, Refrigeration, and Au
$36.95
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Leak Saver - Leak Shot HVAC - Leak Sealant Injector and Condensate Line Blaster - Non-Contaminating CO2 Cartridges - for A/C
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From the brand

Product Description

Leak Saver Direct Inject
leak finder
hvac tools
coil cleaner

Installation Instructions

Will this work with my system?

The Leak Saver works with all air conditioner and refrigeration systems. It is compatible with all refrigerants (except ammonia) and is compatible with all oils.

How does the Leak Saver work?

After injection, The Leak Saver sealant circulates throughout the system with the refrigerant. If there is a small leak, the sealant reacts with the moisture and oxygen at the leak site to form a permanent "scab-like" seal.

What do I need to install the Leak Saver?

To inject the Leak Saver, you will need either a basic set of manifold gauges or our Leak Shot injector. When using it with automotive systems, you will need a 134a to 1/4” adapter. Ductless mini-split systems may require a 5/16” to 1/4” adapter.

What size leak will the Leak Saver seal?

The Leak Saver is able to seal small refrigerant leaks where the complete charge is not lost within 7 days. If this is not possible, your leak is too large to be repaired with Leak Saver.

What do I do if it doesn’t work?

We stand behind the effectiveness. If you are not completely satisfied, please reach out to us directly and we will make it right. With more than 4 million units of this formula sold since 2015, we have a strong track record of effectiveness.

Leak Saver Direct Inject Product Line

refrigerant leak stop

Direct Inject UV Sealer

leak shot

Leak Saver Injection Kit

ac leak stop

Direct Inject Leak Sealer

HVAC leak sealer

Direct Inject Ultimate

acid scavenger

Acid Remover

Moisture remover

Moisture Remover

UV dye hvac

UV Leak Detection Dye

Customer Reviews
4.3 out of 5 stars
1,445
3.9 out of 5 stars
1,142
4.2 out of 5 stars
1,962
4.2 out of 5 stars
689
4.4 out of 5 stars
29
4.4 out of 5 stars
175
4.1 out of 5 stars
142
Price
$36.95 $37.95 $35.95 $46.95 $36.95 $36.95 $18.95
Feature
Leak Sealer & UV Dye Used to Apply Leak Saver Leak Sealer ONLY Sealant | UV Dye | Moisture Acid Remover ONLY Moisture Remover ONLY UV Leak Detection Dye ONLY
Seals Leaks
✔ ✘ ✔ ✔ ✘ ✘ ✘
Has UV Dye
✔ ✘ ✘ ✔ ✘ ✘ ✔
Removes Moisture
✘ ✘ ✘ ✔ ✘ ✔ ✘
Removes Acid
✘ ✘ ✘ ✘ ✔ ✘ ✘
For Systems up to 5 Tons
✔ ✔ ✔ ✔ ✘ ✔ ✔
Works on All Systems
✔ ✔ ✔ ✔ ✔ ✔ ✔
Works With All Refrigerants
✔ ✔ ✔ ✔ ✔ ✔ ✔

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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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

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Customer reviews

4.3 out of 5 stars
4.3 out of 5
1,445 global ratings

Customers say

Customers like the quality and ease of use of the tool. For example, they mention it's an inexpensive fix and easy to install. That said, opinions are mixed on performance, cooling, and sealant.

AI-generated from the text of customer reviews

142 customers mention142 positive0 negative

Customers find the auto accessory easy to use. They say it's simple enough to add and connect to their mini split via a 5/16" adapter. They also say it takes no more than 3 minutes to connect and performs well. Customers also mention it'll work just fine and there are no issues.

"...I think it’s an interesting concept and it’s cheaper and more environmentally friendly than many other types of sealants/dyes that you can buy at..." Read more

"...Will see how it impacts run times. Installation was super easy and they give you nice quality fittings for the injection...." Read more

"Very easy to use" Read more

"Very easy to use. Used on a 3.5 ton unit. When disconnecting there is no lost gas, well designed!..." Read more

104 customers mention92 positive12 negative

Customers like the quality of the product. They say it's worth the money, easy to use, and inexpensive. Some customers also say it saves them money and the hassle of having to schedule someone. They mention that it'll hold up well so far and is well made.

"...Saved us a lot of money and the hassle of having deal with scheduling someone and possibly having to get a new frig. Highly recommended." Read more

"...This has the best review and works with cap tube systems. If you have no other choice but to replace whole system it’s worth it to try. Good luck" Read more

"...I think it’s an interesting concept and it’s cheaper and more environmentally friendly than many other types of sealants/dyes that you can buy at..." Read more

"...Installation was super easy and they give you nice quality fittings for the injection. My only remaining concern is how well it works...." Read more

11 customers mention11 positive0 negative

Customers like the UV dye in the tool. They say it's an extra touch, works well to ID bigger issues, and is bright. Some say it is a great product for injecting dye into A/C system and a UV dye leak tester.

"...What we like most about this particular product is the included UV dye so we can locate the leak, in the event that it's too large for the sealer..." Read more

"...this is not a forever fix but the thing I like is that with the built-in dye it will be easier to find the leak with a UV light and repair it." Read more

"...UV dye works well to ID bigger issues. Just take note the amount of refrigerant you add with it...." Read more

"The uv dye is great, the sealer plugged the txv almost immediately after injection" Read more

133 customers mention88 positive45 negative

Customers are mixed about the performance of the tool. Some mention that it works great, while others say that it didn't work for them. Some say that the freon did not seem to last, and that the core depressors were defective.

"...It's been 2 weeks, the chiller is working great and the compressor is running quieter than ever...." Read more

"...and it's been a couple years and no more coolant added and the frig is working great...." Read more

"...run for 4 to 5 months of cooling & heating, then suddenly shut down with low pressure indicated. It tended to run longer cooling than when heating...." Read more

"...Very happy with the results." Read more

116 customers mention58 positive58 negative

Customers are mixed about the sealant. Some mention that it immediately seals the leak and has not failed since, while others say that it slows the hole down but does not stop it completely.

"...Leak Saver is much easier to use than those plunger type sealants that can be very hard to inject the sealant in a tight area and inevitably leaking..." Read more

"...The chiller developed a leak after 2 1/2 years and wouldn't cool...." Read more

"...I am an ac pro and use these quite a bit. The stopleak works well on small leaks and the dye is great for the bigger leaks. Great product!" Read more

"...The leak I have is very small but I don't know where it is...." Read more

20 customers mention8 positive12 negative

Customers are mixed about the cooling of the auto accessory. Some mention that it is still cooling perfectly, while others say that it only ran cool for one day and then started blowing warm air again.

"...Each spring after it was low and not cooling very well...." Read more

"...However, the AC is working fine and cooling properly so far...." Read more

"After 4 years my LG refrigerator stopped cooling. LG sent a tech out to diagnose the problem. Claimed bad compressor...." Read more

"...the dyed leak saver for small a/c. Hours later it is still blowing very cold and doesn’t appear to have lost any refrigerant." Read more

13 customers mention7 positive6 negative

Customers are mixed about the ease of injecting. Some mention it injects easily, while others say it doesn't take.

"Easy to pump in , only have a day of run time. We’ll see in a couple of weeks" Read more

"...this product several times and about 50% of the time they will not inject into the system...." Read more

"Easy to use. Injection went smoothly during refrigerant recharge. Time will tell how well it seals a slow leak." Read more

"I wrote a review and The dryer one as well.The injection didn't take, the chemical blew out the back, must have been a defect...." Read more

6 customers mention0 positive6 negative

Customers are dissatisfied with the damage of the auto accessory. They mention that the plastic tube cracked and the sealer all leaked out. They also say that the liquid hose of the unit exploded violently and spilled toxic gas all over the place. Customers also report that the contents were hardened or a valve was damaged.

"...I suspect either the contents were hardened or a valve was damaged or something.Wasted money either way." Read more

"...But... this time the liquid hose of the unit exploded violently (easily could have taken out my eye) when attached to my low side running at 140 psi!..." Read more

"Tried to inject using the Leak Shot, but failed. This thing exploded and spilled toxic gas all over the place...." Read more

"...2 days later the compressor on my refrigerator seized up entirely." Read more

Worked great after some effort (not due to Leak Saver)
5 Stars
Worked great after some effort (not due to Leak Saver)
Used Leak Saver in a 2010 2.5T Trane SEER 15 that was 10 years old (just 3 months out of warranty!) and at first Leak Saver appeared not to help at all, the leak continued at a rate of 1.5 to 2 lbs per month. After using a professional refrigerant "sniffer", and several hours of investigation, I discovered the cause of the leak. This Trane unit uses a Spine Fin heat dissipator system and one of the spine fins had cut through the copper suction pipe where it crossed under the Spine Fin coil assembly. Since the fin was still in contact with the pipe the Leak Saver could not seal the leak because vibration from the unit operating was continually "cutting" into the it!All that needed to be done for Leak Saver to work properly was to use the round shank of a #2 phillips screwdriver to bend the fin away from the suction pipe (see photo), and voila, the leak was sealed and has remained so for 3 years. Bravo Leak Saver!!I suspect similar situations have caused some of the negative reviews on Amazon for Leak Saver - if the leak is caused by a constant irritant somewhere then no leak stop product will be able to seal it. My leak happened as soon as the fin had cut all the way through the suction pipe, after 10 years in operation, and all the R-410A leaked out in a few months.
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Top reviews from the United States

Jeff L.
5.0 out of 5 stars Very straightforward to use, time will tell if it works ...
Reviewed in the United States on March 18, 2021
Size: Small System (Up to 1 Ton)Color: 1 PackVerified Purchase
I used this on an Active Aqua AACH25 chiller that I use for fermentation temp control in my home brewery. The chiller developed a leak after 2 1/2 years and wouldn't cool. I was about to drop several hundred $ on a new chiller when I found some YouTube videos showing how to add refrigerant to small refrigerators. I used the Supco BPV31D bullet piercing valve to tap into the low pressure side freon line and refill the R134A refrigerant with a can tap and gauge (all purchased on Amazon), but after 4-6 weeks the freon pressure was low again so I was happy to find this product.

The female end of the Leak Saver connected directly to the BPV31D, and the hose for the can tap and gauge connected directly to the male side of the Leak Saver UV. With the chiller turned off, I had enough pressure in the system to do a brief purge of the connection between the leak saver and the BPV, and then purged the connection between the can tap / gauge hose and the leak saver with freon from the can. I then pressurized the hose from the can with the BPV closed, closed the valve to the can and opened the valve on the BPV. That's all it took to empty the Leak Saver UV into my chiller's freon line. I powered up the chiller and proceeded to top off the freon to the desired pressure right through the leak saver, let the system run for an hour, closed the valve on the BPV and butttoned everything back up. It's been 2 weeks, the chiller is working great and the compressor is running quieter than ever.

I will update this review in a few months to report on whether my slow leak was fixed with the Leak Saver UV.
10 people found this helpful
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Amazon Customer
5.0 out of 5 stars It works!
Reviewed in the United States on March 21, 2024
Size: Small System (Up to 1 Ton)Color: 1 PackVerified Purchase
What can I say, i had a small refrigerant leak that I kept having to recharge ever so often. I used this product and it's been a couple years and no more coolant added and the frig is working great. Saved us a lot of money and the hassle of having deal with scheduling someone and possibly having to get a new frig. Highly recommended.
2 people found this helpful
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Steve Sweeney
5.0 out of 5 stars Easy to use and it works!
Reviewed in the United States on September 20, 2022
Size: Small System (Up to 1 Ton)Color: 1 PackVerified Purchase
I've been waiting for a good leak sealant that's easy to use for years. Tried many of them and in my opinion Leak Saver is the best by far as I've been using it for a while now. I own a vending machine repair service and maintaining customer's equipment can be a nightmare. Using Leak Saver is keeping these older units in service and profitable for my customers. It's also cheap insurance from me having to make a repeat service call when micro leaks show up in the middle of a evaporator that might take hours to remove to repair or replace. Leak Saver is much easier to use than those plunger type sealants that can be very hard to inject the sealant in a tight area and inevitably leaking a bit when disconnected. Leak Saver has become my go to for small leak repairs.
One person found this helpful
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Janice
4.0 out of 5 stars Very easy to use
Reviewed in the United States on February 7, 2023
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
I recently purchased the leak saver sealer with UV dye along with the leak shot CO2 injector. It couldn't have been easier to use. This is the way to go if your a DIY type like me. It's a little early to tell whether or not the product will work but I'm confident but at least with the UV dye added, the leak will reveal iself and hopefully seal it as well. The leak I have is very small but I don't know where it is. It only loses a couple maybe two to three pounds so once I have I have it recharged spend time will tell it's effectiveness but I'm really hoping this works as it will save me a ton of money getting a new unit and keeping this old one running for a bit longer.
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Lobusmaximus
5.0 out of 5 stars Less work to fix small Freon leaks than hunting the leak
Reviewed in the United States on October 21, 2023
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
I'd been trying to locate a small Freon leak with soap sprays, oil residue searches, & Freon sniffers on the 7-year old split unit heat pump in my shop. It would run for 4 to 5 months of cooling & heating, then suddenly shut down with low pressure indicated. It tended to run longer cooling than when heating. I was leary of stop-leak products in general because of bad experiences in car systems; the stuff plugged up everything (like thermostats) as well as the intended target. The R-410A systems run at very high pressures compared to old R-22 systems so I expected to find a fitting not quite tight enough to hold the refrigerant. No luck. I viewed the clear tubing holding the stop leak & UV dye with suspicion--didn't look strong enough to hold the high pressure. The connectors fit perfectly (I already had the adapter on the low-pressure line needed to connect the low-pressure hose); they were just like an extension of the charging hose. I decided to do the injection & recharge in one go. I set up liquid injection into the low-pressure line to make sure the contents were diluted promptly. When I opened the tank charging valve the yellow fluid in the clear tubing vanished immediately followed by boiling R-410A. I watched while the scales moved smoothly up to the 68.8 oz charging spec with the system running on cooling. Everything worked fine for about an hour then the system shut down. Turned out there was more residual R-410A than I expected & the system stopped (high pressure cutoff) when the fluid temperature came up to the 100 deg F outside temperature. I decided to let the system pressure equalize--give the leak a chance to expel some of the stop leak fluid. Air & moisture was suppose to cause it to harden & plug the leak. Sure enough, the next day the AC came on & the air coming out of the evaporator was a chilly 50 deg F. It has worked great both as a heat pump & AC since then. I haven't tried to located my UV light to see if any dye escaped. I expect that will be easier to find if significant R-410A escapes in a few months. Follow the instructions; I recommend this for small leaks--don't waste R-410A (or any other refrigerants) trying to plug large leaks. The dye-only version is probably your best approach in that case.
3 people found this helpful
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Taylor J.
1.0 out of 5 stars Doesn't work and Not Returnable
Reviewed in the United States on April 25, 2024
Size: Small System (Up to 1 Ton)Color: 1 PackVerified Purchase
Doesn't work and Not Returnable. I've tried these leak sealers twice now on the same R22 system. Leak is 10lbs of Freon every 6-8 months. Can't find the leak even with the UV dye and a UV flashlight.

I bought 2 this time around but after the past 3 leak sealers not working I want to return my non used ones and seller wont allow returns. Wouldn't recommend this product.
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Top reviews from other countries

AmazonPhilip Smith Customer
5.0 out of 5 stars Great product
Reviewed in Canada on April 3, 2024
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
Worked as sold. Easy to install
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jeff yiu
5.0 out of 5 stars Did the job
Reviewed in Canada on January 13, 2024
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
Had small leak and this solved the problem
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Jaisen Young
5.0 out of 5 stars Best deal when on sale
Reviewed in Canada on July 14, 2023
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
Fast delivery, with the sale price. Great deal!
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ala
5.0 out of 5 stars Delivered on time
Reviewed in Canada on May 31, 2022
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
The product was delivered in a timely manner. I called the technician because I did not how to inject it into the AC. It has been two weeks, and no issues so far. I will have to wait until the end of the season to see if it works.
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Lindsay Loeppky
1.0 out of 5 stars Did Not Work
Reviewed in Canada on August 13, 2023
Size: Standard (Up to 5 Tons)Color: 1 PackVerified Purchase
Used as directed and it did not repair the leak. At least I got the kit with dye so now I know where the leak is. I just hope the material used does not damage the operation of the fridge. Basically it was a waste of money.
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