The Lochinvar & A.O. Smith 100289340 neutralization kit is a vital component employed in HVAC systems, particularly in condensing boilers and water heaters. By neutralizing the acidic condensate created during combustion, this kit helps to shield the system and its surrounding components from corrosion and damage. https://www.partshnc.com/100289340-lochinvar-ao-smith-neutralization-kit