A/C Zincs, Inc. Introduces Corrosion Grenade 2.0

Corrosion Grenade
Corrosion Grenade

A/C Zincs, Inc., the leading manufacturer of sacrificial zinc anodes for the HVAC/R industry, has introduced the Corrosion Grenade 2.0™, an aluminum/indium alloy version of the original zinc Corrosion Grenade®.

Both the Corrosion Grenade® and Corrosion Grenade 2.0™ provide an economical, easy to apply solution for protecting air conditioning system aluminum fins from deterioration due to exposure to coastal environments. An adaptation of a marine application for fighting galvanic corrosion, the Corrosion Grenades are sacrificial anodes and truly green solutions to a costly problem. Manufactured to military specifications, they are designed to be attached to the suction line of the equipment to be protected. Made in sizes to fit ½”, 3/8”, 5/8”, ¾”, 7/8” and 1 1/8” suction lines, the Corrosion Grenades are available at wholesalers throughout the country.

For years, air conditioning manufacturers’ have been plagued with the expensive problem of the aluminum fins deteriorating when the air conditioning unit is installed near the coast.

The reason the fins deteriorate so quickly is due to a process called galvanic corrosion, or commonly referred to as electrolysis. Galvanic corrosion occurs whenever you have dissimilar metals, electrical power and electrolytes present. The air conditioning system is made of copper, steel and aluminum; the moist salt air conducts electricity and is the electrolyte.

Galvanic corrosion only damages the softest or weakest metal, which is the aluminum; therefore, the aluminum fins begin to deteriorate as soon as the system is started. The marine industry, one of the harshest environments for metals, learned many years ago how to deal with galvanic corrosion. Since galvanic corrosion only attacks the weakest metal, they realized that they could add a weaker metal to their systems and sacrifice it to the corrosive action. On the galvanic scale, zinc is near the top and weakest, surpassed only by magnesium and the aluminum/indium alloy used in the Corrosion Grenade 2.0. The marine industry began the practice of attaching pieces of zinc to every engine, replacing them as they deteriorated, with tremendous results.

The Corrosion Grenades work the same way in an air conditioning system. When attached to the suction line of the condenser, a weaker metal than aluminum is introduced to the system. The moment a Corrosion Grenade® or Corrosion Grenade 2.0™ is attached, the galvanic corrosion leaves the aluminum and attacks the zinc or aluminum/indium alloy, extending the life of the aluminum fins and helping maintain the optimum efficiency of the air conditioning system.

A Corrosion Grenade® or Corrosion Grenade 2.0™ should be included in every proposal for new installations, replacements and service calls in coastal residential, commercial and industrial applications where aluminum fin deterioration is a concern.
For more information on galvanic corrosion and the Corrosion Grenade® and Corrosion Grenade 2.0™, or to locate a distributor near you, visit or call A/C Zincs, Inc. at 877-384-3306.