A.O. Smith® AOW-S400 Hi-Capacity Water Softener, 34,800 Grain Capacity

AOSAOWS400 MFG #: AOW-S400
  • Flow Rate: 7 gpm
  • Grain Capacity: 34,800
  • Height: 32 in
  • Temperature Rating: 40 to 120 degF
  • Width: 22-19/24 in
  • Length: 18-5/48 in
  • Manufacturer: A.O. Smith
  • Manufacturer #: AOW-S400
  • Maximum Hardness Removal: 90 gpg
  • Minimum pH: 7
  • Output Iron Reduction: 10 ppm
  • Pressure Rating: 20 to 120 psi
  • Salt Storage Capacity: 200 Gallons
  • Total Length of Regeneration: 27-1/2 min
  • Voltage Rating: 115V
Designed for durability - protect your home from the effects of hard water. Reduce scale buildup, eliminate water spots and stains, extend the life of your appliances and preserve the colors in your favorite fabrics.

Looking for model-specific repair or replacement parts? Enter the unit’s serial number into the A.O. Smith Parts Finder.

AOW-S400 HI-CAPACITY WATER SOFTENER 34,800 GRAIN
  • Features
  • Patented, slim, single-unit design with bypass valve
  • Backup battery saves your settings in case of power loss
  • Recharges softening media quickly so you don't experience downtime
  • Save time and money with the self-cleaning sediment filter
  • 2.7 in monochrome touchscreen controller