15 Best Stop Leak Solutions for R22 Systems

Discover the best stop leak for R22 system to ensure efficient repairs and maintain optimal performance in your HVAC setup.
15 Best Stop Leak Solutions for R22 Systems

Top Quick Picks For You

Most Wallet-Friendly

Enviro-Safe ProSeal

Enviro-Safe ProSeal

The ENVIRO-SAFE ProSeal XL4 Inject Stop Leak offers a cost-effective solution for R-22 systems, making it a great choice for those on a budget while still delivering good performance.

Best for Easy Installation

Leak Saver

Leak Saver

The Leak Saver Direct Inject AC Leak Sealer is designed for easy, straightforward installation, allowing for direct injection with minimal tools required.

Best All-in-One Solution

Leak Saver

Leak Saver

The Leak Saver Direct Inject Ultimate 3-in-1 combines a sealant, moisture remover, and UV dye, making it the comprehensive solution for leak detection and repair.

Best for Long-Term Sealing

Rectorseal

Rectorseal

The Rectorseal 45317 Leak Sealer is designed to permanently seal refrigerant gas leaks in HVAC systems, providing long-term reliability and effectiveness.

Best Stop Leak for R22 System

When it comes to maintaining the efficiency of your R22 system, discovering the right stop leak solution can feel like navigating a labyrinth. The stakes are high: a small leak can lead to significant energy loss and costly repairs, so finding the perfect product is essential. In this guide, we'll explore the top stop leak options that can seal those pesky leaks swiftly and effectively.

Most Wallet-Friendly: Enviro-Safe ProSeal

ENVIRO-SAFE ProSeal XL4 Inject Stop Leak R-22 (1.5-5 Ton Units) for Home AC #2100AI-5
GoodNot So Good
Effective for leak sealingShort-term effectiveness
Easy to injectRequires careful application
Good customer supportMay need system replacement

When it comes to a budget-friendly solution for your R-22 system, the ENVIRO-SAFE ProSeal XL4 Inject Stop Leak truly stands out .

We’ve named it our "Most Wallet-Friendly" pick because it offers impressive leak sealing without breaking the bank .

While it excels in ease of use and has a supportive customer service team backing it up, it’s worth noting that its effects may be somewhat short-lived .

A careful application is essential—otherwise, you might find yourself needing a system replacement sooner than anticipated .

Overall, it’s a solid choice for anyone looking to patch up leaks efficiently.

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Price history for Enviro-Safe ProSeal on Amazon

Best for Easy Installation: Leak Saver

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
GoodNot So Good
Permanent leak sealantRequires specific adapters
Compatible with all systemsLimited to small leaks
Easy installation processMay not work for major repairs

We’re thrilled to share our thoughts on the Leak Saver Direct Inject AC Leak Sealer, our pick for the title of Best for Easy Installation .

This product packs a punch with its permanent leak-sealing capabilities, swiftly tackling small refrigerant leaks without fuss .

Installation is a breeze—say goodbye to messy hoses and cans !

With just a basic manifold gauge set, you'll be sealing leaks in no time .

Plus, it’s compatible with a wide range of systems, from central air to cars .

Just remember, for larger issues, it may not be your go-to solution .

Overall, a stellar choice for quick fixes!

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Price history for Leak Saver on Amazon

Best All-in-One Solution: Leak Saver

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
GoodNot So Good
Easy to installMay not fix all leaks
Works for all systemsInjector difficulties reported
Permanent leak sealHigher cost for severe issues

We’re excited to share our thoughts on the Leak Saver Direct Inject Ultimate 3-in-1, which we've crowned as the "Best All-in-One Solution." This product truly combines functionality and convenience with its sealant, moisture remover, and UV dye all in one package !

What we love most is its ability to permanently seal refrigerant leaks without losing the entire charge within 7 days .

It’s compatible with all systems and refrigerants, including R22, making it versatile for various needs .

Plus, it boasts straightforward installation—no mess, no fuss !

While it may not tackle every leak, its reliability and ease of use make it a top contender .

Is it the right fit for your project ?

We think you’ll find it worth considering!

Be sure to also check out the best gloves for plumbers for more options! Also, here is the price history so you know exactly when to buy!

Price history for Leak Saver on Amazon

Best for Long-Term Sealing: Rectorseal

Rectorseal 45317 Leak Sealer, 1.5 oz, Green
GoodNot So Good
Easy to applyFluctuating price
Stops leaks permanentlyMay require refrigerant loss
Compact designNot always effective

When it comes to stopping elusive refrigerant leaks, we’ve found that the Rectorseal 45317 Leak Sealer truly stands out .

Dubbed the "Best for Long-Term Sealing," this product uses advanced leak-seeking nano particles to create a permanent seal in HVAC systems .

Its easy application with a standard 1/4" adapter makes it a breeze for both professionals and DIY enthusiasts alike .

We appreciate its compact design and the confidence it brings in revitalizing air conditioning systems, making it ideal for hard-to-find micro leaks .

Just keep in mind the fluctuating price; however, when it works, it really works!

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Price history for Rectorseal on Amazon

Nu-Calgon EasySeal

Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, One Size Treats Systems 2 to 7.5 Tons
GoodNot So Good
Concentrated formulaOne-time use only
Easy visibilityMay not seal large leaks
No need for pump downNot a permanent fix

When it comes to tackling leaks in your R22 system, we found that the Nu-Calgon Stop Leak packs a punch with its concentrated formula .

It allows for less material in the system while still sealing those pesky leaks effectively .

We love the clear tube design—it lets us see the sealant as we apply it, making the process completely hassle-free .

Plus, there’s no need to pump down R-410A units, which is a major convenience .

While it’s a one-time-use solution that may not handle larger leaks, for smaller issues, it’s an excellent choice that we wholeheartedly recommend!

Be sure to also check out the best sealant for car sunroof for more options! Also, here is the price history so you know exactly when to buy!

Price history for Nu-Calgon EasySeal on Amazon

Enviro-Safe

ENVIRO-SAFE Direct Inject ProSeal XL4 1.5-5 ton Inject Stop Leak R-22 Home Contractor 3 Pack #2100AI-5CP
GoodNot So Good
Concentrated formulaPotential for professional issues
No need to pump downWorks best with care
Compatible with many systemsNot for ammonia systems

If you're on the hunt for an effective stop leak for your R22 system, look no further than the Enviro-Safe 2100AICP-5 .

This concentrated formula is a game changer, eliminating the need to pump down your system .

Suitable for a variety of setups, including heat pumps and split systems, it works beautifully in units ranging from 1.5 to 5 tons .

However, while it’s broadly compatible with most refrigerants (just steer clear of ammonia), we suggest exercising a bit of care during application .

With a solid rating of 4.4 stars from 43 reviewers, it's clear this product stands out in the crowd!

Be sure to also check out the best gloves for cement work for more options! Also, here is the price history so you know exactly when to buy!

Price history for Enviro-Safe on Amazon

TSI Supercool Stop Leak for R22 System

TSI Supercool 28399 HVAC Leak Stop Syringe with Application Hose, 2 fl. oz. (60 mL)
GoodNot So Good
Easy to injectDifficult to use
Permanently seals leaksInstructions unclear
Protects against corrosionSyringe quality issues

When it comes to tackling leaks in your R22 system, TSI Supercool’s solution is a solid contender .

This 2-ounce syringe is designed to treat units up to 6 tons, and trust us, it permanently seals leaks effectively .

What we particularly love is that it doesn’t contain harmful polymers, ensuring your A/C components remain safe and sound .

However, we did find the instructions a bit unclear, which can make usage tricky for some .

Despite this, its ability to protect against future corrosion and compatibility with all lubricants and refrigerants make it a worthwhile option for proactive maintenance.

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Price history for TSI Supercool on Amazon

Leak Saver

Leak Saver Direct Inject Small System with UV Dye - Refrigerant Leak Sealer - Detects Large Leaks - Ideal for Most Small Home Appliances and HVAC Systems up to 1 Ton - Proudly Made in The USA
GoodNot So Good
Easy injection methodMay not work for all systems
Seals small leaks effectivelyPotential for clogging
Compatible with all refrigerantsRequires additional tools

When it comes to sealing leaks in R22 systems, Leak Saver UV truly stands out .

We love its easy injection method—no more wrestling with messy syringes or complicated tools !

Just connect it to your manifold gauge, and voilà !

With over 3 million units sold since its launch, it’s proven to seal small refrigerant leaks permanently, almost like a superhero reaction to a cut .

Plus, the added UV dye feature is a nifty touch, helping you identify larger leaks with ease .

With compatibility across all systems (except ammonia, of course), it’s our top pick for preventative maintenance .

Give it a go!

Be sure to also check out the best tool for measuring baseboard angles for more options! Also, here is the price history so you know exactly when to buy!

Price history for Leak Saver on Amazon

Comstar A/C Zero-Leak

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)
GoodNot So Good
Environmentally safeVariable effectiveness
Non-hardening formulaRequires proper application
Compatible with various lubricantsNot suitable for all leaks

When it comes to keeping your R22 system running smoothly, we found that this stop leak product from ComStar International is a solid contender .

Designed specifically to prevent minor leaks in components like evaporators and condensers, it’s both environmentally safe and versatile enough for automotive and residential use .

Its non-hardening formula is a standout feature, ensuring that it won’t harm your A/C system or clog up components .

Although results can vary, proper application can extend the life of your unit .

If you’re in need of preventive maintenance, we think this option is definitely worth considering!

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Price history for Comstar A/C Zero-Leak on Amazon

Leak Saver Stop Leak for R22 System

Leak Saver AC Leak Sealant + HVAC Injector Kit Bundle
GoodNot So Good
Permanently seals leaksRequires specific adapters
Compatible with all systemsInitial skepticism from users
Easy installation processMay need additional instructions

We’re excited to share our thoughts on the Leak Saver, a true game-changer in the world of HVAC leak repair .

This superb sealant works wonders by permanently sealing small refrigerant leaks within just a week, saving you from costly repairs .

Its versatility is impressive; it’s compatible with virtually every system out there, whether it’s your car or your home AC !

Installation ?

A breeze !

No need for messy syringes or complicated setups—just grab a manifold gauge set or our special Leak Shot Injection Kit .

While some users felt a bit skeptical at first, the results speak for themselves .

Overall, a fantastic investment for hassle-free maintenance!

Be sure to also check out the best romex wire dispenser for more options! Also, here is the price history so you know exactly when to buy!

Price history for Leak Saver on Amazon

Rectorseal

Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, 1.5 oz, Blue
GoodNot So Good
Easy to applyMixed effectiveness
Restores AC performanceNot always reliable
Permanent leak sealMay require multiple uses

When it comes to tackling pesky refrigerant leaks in your R22 system, we can't overlook the AC Leak Freeze PRO from RectorSeal .

This nano particle marvel shines with its ability to seal those hard-to-find cracks in HVAC coils .

What truly makes it user-friendly is the standard 1/4" adapter—just connect and apply !

We've seen it swiftly restore AC performance while promising a permanent fix for small leaks .

However, results can be a mixed bag; some users note varying effectiveness and the possibility of needing multiple applications .

Still, for a quick and efficient performance boost, this sealant is worth considering!

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Price history for Rectorseal on Amazon

RectorSeal Leak Freeze

RectorSeal AC Leak Freeze Magic Frost with 1/4" Adapter 45322 Leak Sealant, Non- Polymer Formula & Safe for Refrigeration Systems, Easy Application, HVAC, 0.5 oz.
GoodNot So Good
Easy to applyDifficult to administer
Stops leaks permanentlyMessy application
OEM approvedLimited effectiveness on old systems

When it comes to sealing pesky leaks in your R22 system, AC Leak Freeze by RectorSeal is a standout option .

With its easy-to-apply syringe, this product makes quick work of refrigerant gas leaks in both residential and commercial setups .

We appreciate that it’s OEM approved, ensuring compatibility with HVAC systems .

Once you administer it, AC Leak Freeze works to permanently seal those tricky micro leaks, reviving your air conditioning and refrigeration systems like magic !

However, be prepared for a bit of a messy application, and keep in mind that its effectiveness may wane in older systems .

Overall, this leak stoppers a valuable addition to any tradesman’s toolkit!

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Price history for RectorSeal Leak Freeze on Amazon

ZeroR AC UV Dye Leak Detector Stop Leak for R22 System

ZeroR® AC UV Dye Leak Detector R134_ R12_ R22_ - 3 Can
GoodNot So Good
Easy to usePrice is high
Highly concentrated dyeMessy to remove
Great leak detectionNon-returnable HazMat

The ZeroR UV Dye Leak Detector is a game-changer for anyone seeking to pinpoint leaks in their R22 system .

With just one can, you'll have enough dye to tackle a full-sized vehicle, making it perfect for both personal and professional use .

We love how easy it is to apply—simply add it to your system and watch for the fluorescent yellow glow under a black light .

However, the price tag might give you pause, and we found it a bit messy to clean up .

Since it’s categorized as HazMat, returns aren’t on the table, so ensure you’re all set before buying .

Overall, it delivers excellent leak detection in a market full of options!

Be sure to also check out the best caulk for hardie board for more options! Also, here is the price history so you know exactly when to buy!

Price history for ZeroR AC UV Dye Leak Detector on Amazon

K-Seal

K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
GoodNot So Good
Quick leak sealingPossible clogging issues
Easy to useMay only be temporary
Compatible with all coolantsCustomer service response variability

When it comes to sealing leaks in your R22 system, K-Seal is a game-changer !

Its multi-purpose formula works quickly and efficiently, sealing leaks in just one step .

We found it incredibly easy to use; just shake, pour, and go .

This means no draining or flushing, making the repair process a breeze .

Furthermore, it’s compatible with all types of antifreeze, making it suitable for nearly any vehicle .

While there’s a chance of temporary results, the cost-effectiveness and professional-grade reliability make it a popular choice among mechanics .

Trust us, you’ll appreciate having K-Seal on hand for those unexpected leaks!

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Price history for K-Seal on Amazon

BlueDevil A/C Stop Leak

Red Angel 00222 A/C Stop Leak & Conditioner - 4.5 Ounce
GoodNot So Good
Guaranteed permanent sealInconsistent results
UV dye for leak detectionMay require multiple applications
Easy to useInstructions lack detail

When it comes to addressing leaks in R22 systems, BlueDevil’s Stop Leak is a solid contender .

With its guaranteed permanent seal, we love that it also features UV dye for easy leak detection, making it a breeze to pinpoint those pesky spots. Easy to use is a real plus for those of us who prefer straightforward solutions .

However, be prepared for the possibility of needing multiple applications, as results can be a bit inconsistent at times .

Overall, if you're looking for a reliable option that won't damage your A/C system, we believe this product deserves your consideration!

Be sure to also check out the best flap disc for metal for more options! Also, here is the price history so you know exactly when to buy!

Price history for BlueDevil A/C Stop Leak on Amazon

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