AC Leak Freeze’s nano PRO Series now includes UV dye for leak detection and a leak sealant designed for lower refrigerant volume of mini-splits.

HOUSTON–RectorSeal® LLC, Houston, a manufacturer and distributor of quality HVAC/R products, has introduced three new refrigeration leak sealant products to its AC Leak Freeze® product line for permanently sealing micro leaks in residential and commercial air conditioning systems. AC Leak Freeze’s PRO nano Series, which uses a patent-pending, quick-installing applicator, has added AC Leak Freeze nano UV, AC Leak Freeze nano Mini-Split UV, and AC Leak Freeze nano Mini-Split.

All three new products contain the same trusted, renowned AC Leak Freeze formula and its recently-introduced nano particle sealing technology for nano-sized leaks, such as those caused by formicary corrosion.

Both ultraviolet (UV) products–AC Leak Freeze PRO nano UV (for 1.5 to 6-ton systems) and AC Leak Freeze PRO nano Mini-Split UV (for under 1.5-ton systems)–add a leak detection feature using the HVAC industry’s brightest fluorescing ultraviolet (UV) dye. The oil-based green dye, which is designed and safe for HVAC/R system components and orifices, expedites leak troubleshooting by identifying exit holes and skips the time-consuming, conventional repair step of leak detection with bubble liquids, electronic sniffers, ultrasonic detectors or a separate dye injection. The UV products are designed for industry standard UV detection lights.

Unlike the mess potential of other dye applications, the factory-sealed PRO Series applicator eliminates dye contact with the service tech, because its low-loss 1/4-inch (6.3-mm) connection safety fitting (a 1/4-inch x 5/16-inch (8.9-mm) adaptor is sold separately for mini-splits) doesn’t release refrigerant, sealant or dye into the environment or onto hands, clothing and tools. The PRO Series features an 8.5-inch-long (203-mm) one-time-use applicator consisting of a flexible, easy-to-handle, transparent refrigeration hose and an attached recyclable copper 1.5-ounce (44-ml) reservoir of sealant. Unlike some other disposable leak sealant applicators, the PRO Series applicator doesn’t require a R-410A system pump down and its applicator withstands an industry-high burst pressure of up to 3,000-psi.

The AC Leak Freeze PRO nano Mini-Split and AC Leak Freeze PRO nano Mini-Split UV are specifically designed with .04-ounce (15-ml) doses for all ductless mini-split brands and other refrigeration systems under 1.5-tons and smaller refrigerant volumes.

Other AC Leak Freeze PRO nano features are:           

  • Hose and reservoir are factory-sealed to prevent injecting air or atmospheric moisture into the system;
  • Each sku is available in a single J-hook merchandisers or as an attractive  wholesale counter display of 12 products;
  • The flexible nylon hose’s 45-degree connection fitting allows easier hand access than straight fittings when in cramped Schrader valve environments;
  • The transparent hose eliminates guess work as to when application is completed;
  • It comes in four-color boxed packaging designed for distributor J-hook merchandisers or in 12-unit compact POP counter display cases.

Besides using nano particles for repairing nano size exit holes that are beyond conventional sealant capabilities, AC Leak Freeze nano PRO is also the HVAC industry’s safest sealant and applicator for technicians, refrigeration systems and the environment. The safe, non-flammable sealant has the highest flash point in the industry with 320°F (160°C), and doesn’t use toxic ingredients of other sealants listed under OSHA Hazard Communications Standard 29 CFR 1910.1200. AC Leak Freeze also doesn’t react to moisture or oxygen, doesn’t require a chemical reaction to seal, and doesn’t create polymers that can prematurely bond and damage system orifices and components. Unlike many competing sealants, AC Leak Freeze has OEM approval, is manufactured with quality control on site by RectorSeal and has no history of recalls.

AC Leak Freeze nano UV, AC Leak Freeze nano Mini-Split UV, and AC Leak Freeze nano Mini-Split are available in the first quarter 2019. For more information on RectorSeal and its HVAC/R, plumbing, firestop and electrical products, please visit