The pH + Mineral Boost Alkaline VOC filters are designed to provide reliable performance for a duration of up to 12 months. Alternatively, these filters can also filter a maximum of 600 gallons of water, depending on which limit is reached first. This means that customers can expect consistent filtration quality for a full year, provided that the water usage does not exceed the specified gallon capacity. It is essential to monitor both the time and the volume of water filtered to ensure optimal performance and to maintain the effectiveness of the filtration system.