A.O. Smith Clean Water System with RO Boost Carbon Block Under Sink Replacement Filter - AO-4000-CARBON shipping_99A. O. Smith Clean Water System with RO Boost Carbon Block Under Sink Replacement Filter AO 4000 CARBON Get clean, healthy water by reducing 89 contaminants including chlorine, chloramine, lead, pesticides, PFOA PFOS, cysts, microplastics, and more. Replacement filters for the A O Smith Reverse Osmosis System (AO US RO 4000) Use only certified, genuine A O Smith replacement filters for continued contaminant removal and system performance Claryum
aiding balanced strength development
lowering heating costs compared with lower AFUE models
Firmware & Compatibility Checks – Periodically update drivers and verify device compatibility
User adjustable auto power off timer
0 pounds Max Load Capacity 22 pounds Minimum Height 8
and valuables in residential and commercial settings
Store in a dry case: Use the included neoprene or padded case to protect from impact and environmental damage
R‑32 System Ready – Designed to pair with modern HVAC systems using R‑32 refrigerant
with ISO up to 51
Dual tube inflation system
versatile styling enhances both modern and traditional décor
helping maintain moisture and texture without cold spots
