The 3M Aqua-Pure AP817-2 features a 5-micron nominal rating, effectively reducing sediment, dirt, sand, rust, and scale particles from your entire home's water supply. This high-capacity whole house filter cartridge has a service life of up to 100,000 gallons or 12 months, whichever comes first. It is designed to fit the Aqua-Pure AP802 whole house filter housing and delivers a robust flow rate of up to 20 gallons per minute, making it ideal for large households.

Yes, the Aqua-Pure AP817-2 is NSF/ANSI Standard 42 certified for aesthetic effects, specifically for chlorine taste and odor reduction as well as particulate reduction (Class III). The activated carbon block construction reduces chlorine taste and odor while the 5-micron filter media captures sediment, rust flakes, dirt, and scale. This dual-action filtration protects your plumbing, appliances, and fixtures while improving the overall taste and quality of water throughout your home.

The Aqua-Pure AP817-2 is specifically engineered to fit inside the 3M Aqua-Pure AP802 whole house filter housing. Its exact dimensions are 5.25 inches in diameter by 19.5 inches in length, ensuring a precise, leak-free fit within the AP802 housing. It is not compatible with standard 10-inch or 20-inch Big Blue housings, so always confirm you have the AP802 system before ordering this replacement cartridge.

3M recommends replacing the Aqua-Pure AP817-2 every 12 months or after 100,000 gallons of use, whichever occurs first. However, if you notice a drop in water pressure, changes in taste or odor, or visible sediment in your water before reaching these limits, you should replace the cartridge sooner. Homes with well water, high sediment levels, or heavy daily usage may need more frequent replacements to maintain optimal performance.

Installation is straightforward: first, shut off the main water supply and depressurize the AP802 housing by pressing the pressure relief button on top. Use the supplied wrench to unscrew the filter sump, remove the old cartridge, and clean the sump interior. Insert the new AP817-2 cartridge, ensuring it seats properly on the standpipe, then lubricate the O-ring with food-grade silicone grease before reattaching the sump. Slowly restore water flow, check for leaks, and flush the system for 3–5 minutes before use.