3-MONTH SUPPLY PER BOTTLE, 2-PACK: Each 36oz bottle provides up to 3 months of uninterrupted A/C drain line cleaning. This 2-pack set offers up to 6 months of total maintenance, reducing refill frequency and keeping your system optimized. POWERFUL BIO-ENZYMATIC FORMULA: The iFLO cleaner cartridge dissolves zooglea, buildups, and debris in your A/C drain line and drain pan, preventing clogs and costly repairs. Designed for smart dispensing, it ensures long-lasting maintenance for a smooth-running HVAC system. EXCLUSIVELY FOR iFLO SYSTEM: This 36oz cartridge is specially designed for the iFLO Smart A/C Drain Line Cleaning System Kit, ensuring precise smart dispensing and optimal performance to keep your HVAC drain lines clear without manual intervention. SMART APP TRACKING & REFILL ALERTS: The iFLO app ensures effortless maintenance by tracking cleaning cycles, scheduling dispensing, and notifying you when a refill is needed, so you never miss a cleaning session. QUICK & EASY CARTRIDGE REPLACEMENT: Replacing your iFLO A/C drain line cleaner cartridge takes just seconds, providing mess-free, continuous cleaning to prevent buildup and keep your HVAC drain line clog-free. iFLO Smart Automated AC Drain Line and drain pan Cleaner Cartridge Refill