Based on in-depth research and analysis of millions of customer reviews we did on the market this year. we are going to reveal the best hvac leak sealant that you can buy confidently.

Cool Picks For hvac leak sealant (Comparison Table)

Before we start, if you are in a hurry then here are our recommendations based on our in-depth research ordered by score.

10 Best hvac leak sealant (Features & Benefits)

Great! Now that you have an idea about the products we are going to reveal in this post. let’s take a look at each item of the best hvac leak sealant, explore the different specifications and features that it has to offer.

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

$234.95  in stock
Amazon.com
as of April 25, 2022 9:27 pm

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.
  • 3 in 1 SEALANT + MOISTURE REMOVER + UV DYE : Our proven leak sealant now includes moisture remover and UV dye for the complete system treatment! Now, you can seal your leak, remove system moisture, or find large leaks with the UV Dye...all in one easy to install package!
  • OVER THREE 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 works similarly 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.
  • WORKS WITH ALL SYSTEMS AND REFRIGERANTS : The Leak Saver Ultimate 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.

Leak Saver - Leak Shot HVAC - Leak Sealant Injector and Condensate Line Blaster - Non-Contaminating CO2 Cartridges - for A/C and Mini Splits - Systems Up to 5 Tons

$36.95  in stock
2 new from $36.95
Free shipping
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • Kit includes: Leak Shot Injection Gun, 3x Leak Shot Refrigerant Grade CO2 Cartridges (multiple shots per cartridge), 3/4” Rubber Condensate Line Adapter, 1/2” Rubber Condensate Line Adapter, Extension Hose
  • The fastest way to inject Leak Saver Direct Inject brand products! (Sold Separately)
  • Easily blow out clogged and dirty condensate drain lines on central A/C’s and mini splits.
  • REFILL ONLY with Leak Shot Refrigerant Grade CO2 Refill Cartridges. Other brand cartridges may not function with the Leak Shot and my contaminate your system.

Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, Blue

$54.16
$51.11
 in stock
6 new from $46.00
Free shipping
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • Restore AC performance quickly
  • Stop refrigerant leaks permanently
  • Safe delivery tool
  • triple action sealant
  • Low loss safety fitting

Rectorseal 45302 Freeze Leak Repair, 0.5 Oz, Red

$45.16  in stock
9 new from $43.93
Free shipping
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • 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

Leak Saver: Direct Inject Acid Scavenger - Acid Remover - Created by HVAC Pros - for A/C and Refrigeration Systems Up to 5 Tons

$36.95  in stock
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • 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.
  • ELIMINATE AND PROTECT FROM ACID: The ultimate damager, help protect your air conditioner and refrigeration systems up to 5 tons (60,000 BTU) from acid degradation. By turning acid into lubrication, no extra materials are left behind, and it works with POE, mineral, PVE, and alkylbenzene oils.
  • MADE BY HVAC PROFESSIONALS: Especially after replacing compressors, an expert solution is needed for an acid neutralizer you can trust, and this one is made in the USA.
  • NEXT STEP, PESKY LEAK REPAIRS: This acid remover is powerful on its own, but for leaks, we recommend pairing with our Leak Saver Direct Inject (refrigerant leak sealer).
  • 100% SATISFACTION GUARANTEE: Your air conditioner or refrigeration system is fixed to your satisfaction or the next one is on us (must be installed by certified HVAC techs).

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

$94.95  in stock
4 new from $94.95
Free shipping
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • 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 detects large leaks requiring repair.
  • Designed and used by HVAC professionals, our formula has been proven through over a decade of research.
  • Made in the USA

Elitech ILD-200 Infrared Refrigerant Leak Detector HVAC Halogen Gas AC Sniffer

$209.99  in stock
2 new from $209.99
2 used from $155.99
Free shipping
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • INFRARED SENSOR: With the latest and most innovative infrared sensor, its sensor life extends enormously for a maximum of 10 years without false alarms. It detects all halogenated refrigerants much more precisely than traditional corona sensors and moderate heat-diode sensors.
  • SELECTED SENSITIVITY: 3 Selectable Sensitivity Levels -High/Medium/Low; With a maximum sensitivity up to 0.14oz/yr, 4g/yr.
  • TFT SCREEN: The world's first TFT screen advanced leak detector animates leakage, sensitivity, battery levels and sensor faulty indicators and presents more clear and easy readings.
  • RESET & PEAK & MUTE & HEADPHONE PLUG: Automatic reset within 3s, peak button for marking the maximum leakage value,  alarms can be mute, support connecting to headphone so alarms can be heard even in a noise work spot.
  • FREE RETURN OR EXCHANGE WITHIN 3 MONTHS: It meets EN14624, SAE-162, SAE-2791 and SAE-2913 standards. 24/7 US Technician Support via Email and Phone.

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

$64.09  in stock
10 new from $57.42
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • 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

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

$36.95  in stock
2 new from $36.95
Free shipping
Amazon.com
as of April 25, 2022 9:27 pm

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.

Nu-Calgon 4050-11 EasySeal Direct Inject-UV Dye Refrigerant Leak Sealant, Treats 1.5-5 Tons

$66.86  in stock
18 new from $66.83
Amazon.com
as of April 25, 2022 9:27 pm

Features

  • 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