AC smells musty? Drain pan overflowing? Stop HVAC problems before they start. Dr. Peng AC Drain Pan Tablets are designed for professional HVAC preventive maintenance, helping keep your condensate drain pan and drain lines clean with a powerful yet non-corrosive formula. Simply place one tablet into your drain pan each month—no tools, no mixing, and no service calls required. [Why Dr. Peng?] 1. Professional HVAC Preventive Maintenance: Helps break down buildup inside the HVAC condensate drain pan to support clean drain lines, consistent system performance, and long-term preventive maintenance. 2. Helps Prevent Clogs, Overflow & Water Damage: Regular monthly use helps reduce buildup that can lead to clogged condensate drain lines, overflow, unpleasant odors, and costly water damage. 3. Powerful Yet Safe Formula: Made with transparent, plant-derived ingredients including Sodium Bicarbonate, Citric Acid, Coco-Glucoside, and Sodium Citrate. Professional cleaning performance while remaining non-corrosive to metal drain pans and condensate lines. Dissolves completely with no residue. 4. Works With All Major HVAC Systems: Compatible with Central AC, Mini-Split, Portable AC, Window Units, and Dehumidifiers. One simple AC drain pan tablet solution for residential HVAC preventive maintenance. [How To Use] For the initial application, place 2 tablets into your condensate drain pan. For ongoing maintenance, use 1 tablet per month. Place the tablet away from the drain opening for the best coverage and consistent protection. No tools. No mixing. No mess. [Important Note] Do not use in water tanks or portable water systems where water is intended to be ingested or inhaled. [Long-Lasting Professional HVAC Maintenance] Each bottle includes 200 AC Drain Pan Tablets, providing long-lasting monthly condensate pan maintenance for your HVAC system. Help keep your condensate drain pan clean, your drain lines flowing, and your HVAC system protected—month after month.