10 Best Ac Leak Sealers 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing products, scanning reviews, spending more than 36 hours of research and speaking with our test users, we think the Leak Saver: Direct Inject is the one of the Best Ac Leak Sealer on the market.

# Image Name Brand Price
1
⭐Best Choice
Leak Saver: Direct Inject
Leak Saver: Direct Inject - Refrigerant Leak Sealer - For Systems Up to 5 Tons - Compatible With Most Air Conditioner and Refrigeration Systems - Proudly Made in the USA Check price N/A $$$$$ Check price
2 Nu Calgon 4050-08 EasySeal Direct Inject (Packaging may vary) Nu Calgon 4050-08 EasySeal Direct Inject (Packaging may vary) Check price Nu Calgon $$$$$ Check price
3 Rectorseal 45322 Freeze Leak Repair Rectorseal 45322 Freeze Leak Repair Check price Rectorseal $$$$$ Check price
4 Leak Saver: Direct Inject UV Leak Saver: Direct Inject UV - Dye Detects Large Leaks for Repair - Refrigerant Leak Sealer - For Air Conditioner and Refrigeration Systems Up to 5 Tons - USA Made Check price N/A $$$$$ Check price
5 Leak Saver: Direct Inject Ultimate Leak Saver: Direct Inject Ultimate - 3-in-1 Leak Sealant with Moisture Remover and UV Dye for Air Conditioner, Heat Pumps and More - Works on most HVAC and Automotive Systems - Proudly Made in the USA Check price N/A $$$$$ Check price
6
💲Best value for the money
Rectorseal 45302 Freeze Leak Repair
Rectorseal 45302 Freeze Leak Repair, 0.5 Oz, Red Check price Rectorseal $$$$$ Check price
7 AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit, For Rubber and Metal Leaks in O Rings and Hoses, 3 Oz, MRL-3 Check price Interdynamics $$$$$ Check price
8 Mr. Freeze Car AC Recharge Kit and Leak Sealer with Mr. Freeze Car AC Recharge Kit and Leak Sealer with r134a Refrigerant and Wireless Digital Temperature Sensor - Recharge Your Car's AC System Yourself with AccuFill Technology - 14oz Check price N/A $$$$$ Check price
9 Certified AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Certified AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit, for Rubber and Metal Leaks in O Rings and Hoses, 3 Oz, CERT325-6 Check price N/A $$$$$ Check price
10
👑Premium Pick
Cliplight Super Seal Advanced 944KIT
Cliplight Super Seal Advanced 944KIT Check price Cliplight $$$$$ Check price

Leak Saver: Direct Inject – Best Overall Ac Leak Sealer

Leak Saver: Direct Inject
  • 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. A 134A quick coupler is necessary for automotive systems. A 5/16" to 1/4" adapter may be necessary for 410A mini-splits.
  • 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, it’s perfect for use in Split Systems, Heat Pumps, Commercial Unit Coolers, Refrigeration Systems, 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).

Nu Calgon 4050-08 EasySeal Direct Inject (Packaging may vary)

Nu Calgon 4050-08 EasySeal Direct Inject (Packaging may vary)
  • Concentrated formula means less material in system
  • Clear tube so you can see the sealant go in
  • No need to pump down R-410A units
  • Perfect for split systems, heat pumps, microchannel coils, packaged units, and mini splits
  • One time use
  • Packaging may vary

Rectorseal 45322 Freeze Leak Repair

Rectorseal 45322 Freeze Leak Repair
  • AC leak freeze permanently seals leaks in air conditioning and refrigeration systems
  • Will continue to seal additional leaks for up to 1 year that meet testing specifications
  • Does not contain polymers & oem approved
  • Tested to be non-clogging to a/C compressor and recovery unit
  • Ideal for preventive maintenance and leak protection
  • This is an aftermarket of generic part

Leak Saver: Direct Inject UV

Leak Saver: Direct Inject UV
  • Permanently seals refrigerant leaks and prevents future leaks; use with systems up to 5 tons.
  • Safe for all air conditioner and refrigeration systems, valves, and tools. Compatible with all types of refrigerants and oils.
  • Injects easily and directly. No more pump downs, fussy syringes, or pressure sensitive cans; UV dye can detect large leaks requiring repair.
  • Designed and used by HVAC professionals, our formula has been proven through over a decade of research.
  • Proudly made in the USA.

Leak Saver: Direct Inject Ultimate

Leak Saver: Direct Inject Ultimate
  • 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. A 134A quick coupler is necessary for automotive systems. A 5/16" to 1/4" adapter may be necessary for 410A mini-splits.
  • 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. Super concentrated and concentration compatible with all types of refrigerants and oils (except ammonia).
  • 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. Seals small leaks where the entire refrigerant charge is not lost within 72 hours.
  • MADE BY HVAC PROFESSIONALS: Carefully designed to address exactly what HVAC professionals need based on experience, it can be used in Split Systems, Heat Pumps, Commercial Unit Coolers, Refrigeration Systems, automotive applications, and more.
  • 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).

Rectorseal 45302 Freeze Leak Repair – Best Budget Ac Leak Sealer

Rectorseal 45302 Freeze Leak Repair
  • AC leak freeze permanently seals leaks in air conditioning and refrigeration systems
  • Will continue to seal additional leaks for up to 1 year that meet testing specifications
  • Does not contain polymers
  • Tested to be non-clogging to a/C compressor and recovery unit
  • Ideal for preventive maintenance and leak protection
  • This is an aftermarket of generic part

AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit

AC Pro Car Air Conditioner R134A Refrigerant Stop Leak Kit
  • Seals metal leaks in condensers, evaporators, accumulators, receiver and driers
  • Seals rubber leaks in hoses, O-rings, gaskets
  • Safe for all R-134A systems and recovery equipment
  • Compatible with all lubricants
  • Comes with recharge hose

Mr. Freeze Car AC Recharge Kit and Leak Sealer with

Mr. Freeze Car AC Recharge Kit and Leak Sealer with
  • GET COLD AIR IN MINUTES with this r134a car air conditioner revitalizer - Avoid the inconvenience, high costs, and loss of transportation of a repair at the dealer or mechanic. Manufactured in the USA.
  • WIRELESS DIGITAL THERMOMETER AND DISPLAY makes recharging your car simple and fast - You don't have to be an A/C pro to safely use our car air conditioner recharge kit at home.
  • THE MR FREEZE DIFFERENCE - Mr. Freeze uses Accufill technology to measure the air temperature coming from your vents and not the pressure of your system, which can differ from vehicle to vehicle. Simply fill your system until you reach the target temperature using our easy to follow how-to instructions.
  • R134A RECHARGER, LUBRICANT, AND LEAK SEALER, ALL IN ONE - Mr Freeze Air Conditioner Revitalizer r134a refrigerant contains lubricant and sealant for small leaks, helping you get COLD AIR FAST.
  • NO EXTRA TOOLS NEEDED - Other than safety gear such as glasses and gloves, there are no special tools required to recharge your A/C system with Mister Freeze. Color may differ from picture.

Certified AC Pro Car Air Conditioner R134A Refrigerant Stop Leak

Certified AC Pro Car Air Conditioner R134A Refrigerant Stop Leak
  • Seals metal leaks in condensers, evaporators, accumulators, receiver and driers
  • Seals rubber leaks in hoses O-rings and gaskets
  • Comes with recharge hose
  • Safe for all R-134a systems
  • Professional grade

Cliplight Super Seal Advanced 944KIT – Premium Pick

Cliplight Super Seal Advanced 944KIT
  • MADE IN USA - America's Most Trusted AC/R Stop Leak.
  • Super Seal ADVANCED with DRY R - 2 in 1 product.
  • Permanently seals & prevents leaks in all air conditioning and refrigeration systems.
  • DRY R eliminates moisture & increases system efficiency.
  • Compatible with all oils & refrigerants, Hose included.

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