--- product_id: 56166398 title: "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" brand: "leak saver" price: "€ 76.93" currency: EUR in_stock: true reviews_count: 13 category: "Leak Saver" url: https://www.desertcart.sk/products/56166398-leak-saver-direct-inject-uv-refrigerant-leak-sealer-with-added store_origin: SK region: Slovakia --- # Direct inject liquid sealer UV dye for leak detection 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 **Brand:** leak saver **Price:** € 76.93 **Availability:** ✅ In Stock ## Summary > 💡 Seal smart, spot leaks faster, and keep cool with Leak Saver UV! ## Quick Answers - **What is this?** 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 by leak saver - **How much does it cost?** € 76.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/56166398-leak-saver-direct-inject-uv-refrigerant-leak-sealer-with-added) ## Best For - leak saver enthusiasts ## Why This Product - Trusted leak saver brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Peace of Mind Guarantee:** Backed by a 100% satisfaction promise—because your system’s health is our priority. - • **Universal Compatibility:** Works seamlessly with all refrigerants (except ammonia) and system types up to 5 tons—one solution for all your cooling needs. - • **Effortless Direct Injection:** Skip the mess—inject leak sealer straight into your system with ease using standard gauges or Leak Shot kits. - • **UV Dye for Instant Leak Spotting:** Illuminate hidden leaks instantly with built-in UV dye—seal or find leaks before they escalate. - • **Proven Reliability with 3M+ Units Sold:** Trusted by professionals and DIYers alike since 2015 to permanently seal small leaks fast. ## Overview Leak Saver Direct Inject UV is a cutting-edge refrigerant leak sealer with added UV dye for easy detection of large leaks. Designed for AC, refrigeration, and automotive systems up to 5 tons, it offers a mess-free direct injection method compatible with all refrigerants (except ammonia). With over 3 million units sold since 2015, it permanently seals small leaks by reacting with air and moisture, while the UV dye highlights larger leaks under a UV flashlight. Ideal for professionals and savvy DIYers seeking reliable, universal leak management with a satisfaction guarantee. ## Description Buy 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 Detection Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: I am very Impressed! - I have a 13 year old 410a system that developed a "2wk" Evap leak at the beginning of the 88 - 95 degree weather so desperately I bought this with no real expectations to hopefully try and hold off for another month at least while I figure out the best way of purchasing a new system. Its been 4 months & multiple 3 digit days here in the south & all of our Gauge Readings have held up as well as Delta T & the Superheat recommended by the manufacturer....I'm VERY impressed & I honestly, in the beginning, felt like this would end up being more "snake oil". I'm a certified Universal 608 holder but I am an AMATEUR. I've heard claims of long term negative affects & even that its "idiotic" to use this in the first place. I couldn't verify any of that in this review because my experience in HVAC doesn't hold as much knowledge as a long time professional but I can say that in a very difficult financial situation this really worked for me and my family. Review: Less work to fix small Freon leaks than hunting the leak - 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. ## 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077Y3CNMW | | Best Sellers Rank | #8,570 in Automotive ( See Top 100 in Automotive ) #8 in Air Conditioning Leak Detection Tools #23 in Air Conditioning Line Repair Tools | | Brand | Leak Saver | | Brand Name | Leak Saver | | Color | 1 Pack | | Customer Reviews | 4.2 out of 5 stars 1,476 Reviews | | Item Dimensions | 6.5 x 9.6 x 0.6 inches | | Item Form | Liquid | | Item Weight | 3.2 ounces | | Item dimensions L x W x H | 6.5 x 9.6 x 0.6 inches | | Manufacturer | Leake Savers | | Model | LS-05UV | | Number of Items | 1 | | Part Number | LS-05UV | | Style | Compact | | Style Name | Compact | | UPC | 604296227679 | | Unit Count | 1 Count | ## Product Details - **Brand:** Leak Saver - **Item Form:** Liquid - **Item dimensions L x W x H:** 6.5 x 9.6 x 0.6 inches - **Style:** Compact - **UPC:** 604296227679 ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/81ln0U0A8dL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Will this work with my system?** A: 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. **Q: How does the Leak Saver work?** A: 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. **Q: What do I need to install the Leak Saver?** A: 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. **Q: What size leak will the Leak Saver seal?** A: 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. **Q: What do I do if it doesn’t work?** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I am very Impressed! *by L***Y on August 4, 2026* I have a 13 year old 410a system that developed a "2wk" Evap leak at the beginning of the 88 - 95 degree weather so desperately I bought this with no real expectations to hopefully try and hold off for another month at least while I figure out the best way of purchasing a new system. Its been 4 months & multiple 3 digit days here in the south & all of our Gauge Readings have held up as well as Delta T & the Superheat recommended by the manufacturer....I'm VERY impressed & I honestly, in the beginning, felt like this would end up being more "snake oil". I'm a certified Universal 608 holder but I am an AMATEUR. I've heard claims of long term negative affects & even that its "idiotic" to use this in the first place. I couldn't verify any of that in this review because my experience in HVAC doesn't hold as much knowledge as a long time professional but I can say that in a very difficult financial situation this really worked for me and my family. ### ⭐⭐⭐⭐⭐ Less work to fix small Freon leaks than hunting the leak *by L***S on October 21, 2023* 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. ### ⭐⭐⭐⭐⭐ I'm an HVAC technician *by K***8 on December 22, 2019* The reviews I read before purchasing this can be pretty scary if you're the average homeowner. Some say the compressor failed as a result. That is because this type of product is designed to be a liquid that flows with the refrigerant until it meets with oxygen and moisture. These conditions should only be met in the crack where the refrigerant leak is, but can also happen if technicians that have worked on your system did not purge their hoses or if the leak is on the suction (low pressure) side of the refrigerant circuit and the refrigerant level was very low. That being said, if you use this yourself, be sure to do 2 things. 1) Be sure to purge the hose with refrigerant before letting the product into the suction service port. 2) MOST IMPORTANTLY --- before you even open the package, buy and install a drying agent a few days before installing this product. Also, do this during the cooling months so that the drying agent has a chance to circulate and mix evenly throughout the system. That will remove any moisture from your refrigerant and greatly reduce the risk of your compressor failing after the installation. This seller also sells the drying agent which is the one I bought. Using a product like this is always a risk which is why it should only be done as a last ditch effort to keep an old leaky but efficient system running. Your compressor may die by using this and that's not this manufacturers fault. I just used this on my own house and it still runs. ALSO, this may not stop the leak if it is a very large leak. It works best on systems that have to have 1-3 pounds a year added. My leak was faster and I think it slowed the leak down but I haven't verified with a legitimate leak check yet. I'll check again in the spring. It takes a year to really know if it worked. My leak is in my evaporator coil which is the most common place for any brand of cooling system. So far I am satisfied with this product. I am curious to check and see how much refrigerant is needed this spring and if it worked or not. I'll try and update this review. A last thought is that I don't thing the UV dye in this kit works very well or at all but the sealing agent might work. Again I'll try and update later. ## Frequently Bought Together - 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 AC Drain Line Cleaner Tool & Leak Sealant Injector | Condensate Line Co2 Drain Gun | AC Drain Line Unclogger - 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/56166398-leak-saver-direct-inject-uv-refrigerant-leak-sealer-with-added](https://www.desertcart.sk/products/56166398-leak-saver-direct-inject-uv-refrigerant-leak-sealer-with-added) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-21*