Top 10 Freon Leak Sealer – Air Conditioning Leak Detection Tools

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1. Leak Saver

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Refrigerant Leak Sealer, Ideal for Most Small Home Appliances and HVAC Systems up to 1 Ton, Detects Large Leaks, Leak Saver: Direct Inject Small System with UV Dye, Proudly Made in The USA

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Leak Saver #ad - A 134a quick coupler is necessary for automotive systems. The easiest injection method: patent-pending and made to be completely fuss-free, no pump downs, syringes, or pressure-sensitive cans needed again! Comes with 1/4" male and female connections.

Proactively catch any big leaks: Help minimize surprise repairs with UV dye to identify if major leaks are present in any of your air conditioner or refrigeration systems. Made by hvac professionals: used and made by pros, Heat Pumps, Commercial Unit Coolers, confidently use it in Split Systems, Refrigeration Systems, and more. Just contact us must be installed by certified HVAC techs. 100% satisfaction guarantee: this uv dye wonder will fix your next leak or you get your next one at no cost.

A 5/16" to 1/4" adapter may be necessary for 410A mini-splits. Perfect for small home appliances: this leak sealant with UV dye is specifically designed for use in small leaky home appliances, dehumidifiers, wine coolers, refrigerators, small refrigeration systems, air conditioners, and any small refrigeration system not exceeding 1 Ton.
BrandLeak Saver #ad
ManufacturerLeak Saver #ad
Part NumberLS-LS-UV-1

2. Leak Saver

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Refrigerant Leak Sealer, Proudly Made in the USA, Leak Saver: Direct Inject, Compatible With Most Air Conditioner and Refrigeration Systems, For Systems Up to 5 Tons

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Leak Saver #ad - The easiest injection method: patent-pending and made to be completely fuss-free, syringes, no pump downs, or pressure-sensitive cans needed again! Comes with 1/4" male and female connections. Take a look at the numbers: two million applications and counting, you can confidently seal small refrigerant leaks with a proven leak sealer systems up to 5 tons.

A permanent fix for leaks: super concentrated and made to work with all types of refrigerants, it’s compatible with all types of refrigerants and oils except ammonia. Made by hvac professionals: and used by them, Heat Pumps, it’s perfect for use in Split Systems, Refrigeration Systems, Commercial Unit Coolers, and more.

100% satisfaction guarantee: 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. A 5/16" to 1/4" adapter may be necessary for 410A mini-splits. A 134a quick coupler is necessary for automotive systems.
BrandLeak Saver #ad
ManufacturerLeak Savers #ad
Height0.6 Inches
Length6.5 Inches
Weight0.2 Pounds
Width9.6 Inches
Part NumberLS-LS-1
ModelLS-05

3. InterDynamics

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ACPMRL3, Super Seal, 3 Oz, AC Pro Super Seal Car Stop Leak Kit for R134A Refrigerant, Air Conditioner Formula Seals rubber and metal leaks

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InterDynamics #ad - Comes with recharge hose. Seals rubber leaks in hoses, O-rings, gaskets. Safe for all r-134A systems and recovery equipment. Compatible with all lubricants. Seals metal leaks in condensers, accumulators, evaporators, receiver and driers.
BrandInterDynamics #ad
ManufacturerInterdynamics #ad
Height9.84 Inches
Length3.15 Inches
Weight0.22 Pounds
Width5.91 Inches
Part NumberMRL3
ModelMRL-3
WarrantyProducts are warranted to be free from defects in material and workmanship under normal use and service for a period of one 90 days from the date of purchase, unless otherwise specified on the product packaging. This warranty shall not apply to any altered products, misuse and/or negligent use of our products, accident, or normal wear and tear of our products.

4. Leak Saver

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Proudly Made in the USA, Leak Saver: Direct Inject Ultimate, 3-in-1 Leak Sealant with Moisture Remover and UV Dye for Air Conditioner, Heat Pumps and More, Works on most HVAC and Automotive Systems

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Leak Saver #ad - The easiest injection method: patent-pending and made to be completely fuss-free, no pump downs, syringes, or pressure-sensitive cans needed again! Comes with 1/4" male and female connections. Over 2 million leaks sealed: confidently use our trusted direct Inject refrigerant leak sealer that has worked for more than 2, 000, 000 applications on systems up to 5 tons.

3-in-1 fast-acting repair: permanently seals small refrigerant leaks, removes system moisture by converting it into synthetic oil, and detects major leaks with UV Dye. Seals small leaks where the entire refrigerant charge is not lost within 72 hours. 100% satisfaction guarantee: if you’re not satisfied with this product, get your next Direct Inject Ultimate at no cost by contacting us it must be installed by certified HVAC techs.

A 134a quick coupler is necessary for automotive systems. Made by hvac professionals: carefully designed to address exactly what HVAC professionals need based on experience, Commercial Unit Coolers, Refrigeration Systems, automotive applications, it can be used in Split Systems, Heat Pumps, and more. A 5/16" to 1/4" adapter may be necessary for 410A mini-splits. Super concentrated and concentration compatible with all types of refrigerants and oils except ammonia.
BrandLeak Saver #ad
ManufacturerLeak Saver #ad
Part NumberLS-05ULT-MFN

5. Rectorseal

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Rectorseal 45302 Freeze Leak Repair, 0.5 Oz, Red

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Rectorseal #ad - Ideal for preventive maintenance and leak protection. Tested to be non-clogging to a/C compressor and recovery unit. Will continue to seal additional leaks for up to 1 year that meet testing specifications. Ac leak freeze permanently seals leaks in air conditioning and refrigeration systems. This is an aftermarket of generic part. Does not contain polymers.
BrandRectorseal #ad
ManufacturerThe Rectorseal Corporation #ad
Height10 Inches
Length8 Inches
Weight0 Pounds
Width1 Inches
Part Number45302
Model45302

6. RED TEK

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RED TEK ProSeal22 A/C Seal Treatment 4 oz. can

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RED TEK #ad - Compatibility: compatible with most common refrigeration materials and lubricants including R22, seals, gaskets, mineral and syntheticEster and PAG lubricants, hoses, metal components, compressors, and o-rings.

Remains in system as a liquid lubricant ready to seal any future leaks. Environment: Helps environment by reducing refrigerant emissions. Safety: safe and easy to use. Operation: easy to use. Installs in minutes. Lower cost: less expensive than replacing leaking evaporators, condensers, compressors, and metal lines. No long term health risks have been attributed to RED TEK ProSeal. Less toxic than other seal treatments that contain poisonous methanol.
BrandRED TEK #ad
ManufacturerThermofluid Technologies #ad
Part Number452

7. BlueDevil Products

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Red Angel A/C Stop Leak & Conditioner

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BlueDevil Products #ad - Compatible with R-134a. Guaranteed Permanent Seal. Will not clog or damage the A/C System or Recovery Unit.
BrandBlueDevil Products #ad
ManufacturerBlueDevil Products #ad
Weight0.28 Pounds
Part Number00222
Model00222

8. Rectorseal

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Rectorseal 45322 Freeze Leak Repair

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Rectorseal #ad - Will continue to seal additional leaks for up to 1 year that meet testing specifications. Does not contain polymers & oem approved. Ideal for preventive maintenance and leak protection. This is an aftermarket of generic part. Tested to be non-clogging to a/C compressor and recovery unit. Ac leak freeze permanently seals leaks in air conditioning and refrigeration systems.
BrandRectorseal #ad
ManufacturerThe Rectorseal Corporation #ad
Height10 Inches
Length8 Inches
Width1 Inches
Part Number45322
Model45322

9. Nu Calgon

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Nu Calgon 4050-08 EasySeal Direct Inject Packaging may vary

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Nu Calgon #ad - Perfect for split systems, heat pumps, packaged units, microchannel coils, and mini splits. Packaging may vary. No need to pump down R-410A units. One time use. Concentrated formula means less material in system. Clear tube so you can see the sealant go in.
BrandNu Calgon #ad
ManufacturerNu Calgon #ad
Height9.8 Inches
Length1.6 Inches
Weight0 Pounds
Width3 Inches
Part Number4050-08
Model4050-08
Warranty0

10. Certified A/C Pro

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Air Conditioner Formula for Cars & Trucks & More, CERT325-6, Certified AC Pro Car Rubber and Metal Stop Leak Kit with R134A Refrigerant, Super Seal, 3 Oz

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Certified A/C Pro #ad - Contains r-134a gas which is acceptable for use in motor vehicle A/C MVAC systems. Seals metal leaks in condensers, accumulators, evaporators, receiver and driers; Safe for all R-134a systems. Seals rubber leaks in hoses O-rings and gaskets; Professional grade. Complies with section 612 of the epA Clean Air Act, EPA Compliant in Self Sealing Cans. Comes with recharge hose.
BrandCertified A/C Pro #ad
ManufacturerInterdynamics #ad
Part NumberCERT325-6
ModelCERT325-6
WarrantyManufacturer’s warranty can be requested from customer service.