American Standard Self-Cleaning 30,000 Grain Water Softener
Model AST-SD-30
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Power
120V AC
Warranty
10 years tanks, 5 years valve
Flow Rate
9 GPM service
Brine Tank
150 lb salt capacity
Dimensions
9" x 47" mineral tank; 14" x 30" brine tank
Connections
3/4" or 1" NPT
American Standard Self-Cleaning 30,000 Grain Water Softener Review
The American Standard AST-SD-30 is a single-tank 30,000-grain salt-based water softener designed for 2-4 person households in areas with hardness up to 20 GPG. The digital control valve runs demand-initiated regeneration based on actual water usage rather than a fixed schedule, reducing salt consumption by 20-30% compared to time-clock softeners. The self-cleaning feature runs a short rinse cycle on a 7-day interval to prevent resin fouling, extending resin service life in chlorinated municipal water supplies. The AST-SD-30 installs on the main water supply line using standard 3/4-inch or 1-inch plumbing connections and requires a 120V outlet for the control valve. The brine tank holds 150 lbs of softener salt, supporting approximately 6-8 weeks between refills at typical usage.
Pros
- Demand-initiated regeneration reduces salt usage
- Self-cleaning cycle protects resin from fouling
- NSF 44 certified performance
- Compact footprint fits utility closets
Cons
- 30,000 grains is limited for homes with hardness above 20 GPG
- Brine tank holds less salt than larger units
Full Specifications
Brand
American Standard
Model Number
AST-SD-30
Power
120V AC
Warranty
10 years tanks, 5 years valve
Flow Rate
9 GPM service
Brine Tank
150 lb salt capacity
Dimensions
9" x 47" mineral tank; 14" x 30" brine tank
Connections
3/4" or 1" NPT
Iron Removal
Up to 2 PPM clear water iron
Resin Volume
0.75 cubic feet
Certifications
NSF/ANSI 44
Grain Capacity
30,000 grains
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