Water Softener Sizing Calculator
Use this calculator to determine the right size water softener for your home. Simply enter your household size, daily water usage (optional), and water hardness level to receive a personalized recommendation for your water softener capacity.
Why Proper Sizing Matters:
An appropriately sized water softener ensures optimal performance, efficiency, and longevity. Undersized units regenerate too frequently, wasting salt and water, while oversized units provide better efficiency and can handle peak usage periods more effectively.
Input Parameters
If left blank, we'll estimate based on 80 gallons per person per day
gpg = grains per gallon, ppm = parts per million (mg/L)
City water typically has 0 PPM iron. Well water may contain 1-10 PPM.
Recommended Softener Size
Based on a weekly softening capacity of 0 grains
Monthly Salt & Water Usage Comparison
| Softener Size | Salt (lbs) | Water (gal) |
|---|---|---|
| Smaller Size | 0 | 0 |
| Recommended Size (Recommended) | 0 | 0 |
| Larger Size | 0 | 0 |
Your Monthly Savings with Recommended Size:
- 0 lbs of salt (0% reduction) compared to smaller size
- 0 gallons of water (0% reduction) compared to smaller size
Efficiency Notes
Benefits of Oversizing
Understanding Water Softener Sizing
Key Factors in Sizing
- • Household Size: More people means higher water consumption
- • Water Hardness: Higher hardness levels require larger softener capacity
- • Daily Water Usage: Directly impacts the amount of hardness minerals that need to be removed
- • Regeneration Frequency: Most residential softeners are designed to regenerate once per week
Benefits of Proper Sizing
- • Reduced Operating Costs: Properly sized units use less salt and water for regeneration
- • Extended Equipment Life: Less frequent regeneration means less wear on components
- • Consistent Soft Water: No risk of hard water breakthrough between regenerations
- • Environmental Benefits: Less salt and water discharge into the environment
Water Hardness Measurements
Water hardness is typically measured in grains per gallon (gpg) or parts per million (ppm). One grain per gallon equals 17.1 parts per million. The hardness classifications are:
| Classification | GPG | PPM (mg/L) |
|---|---|---|
| Soft | 0-1 | 0-17.1 |
| Slightly Hard | 1-3.5 | 17.1-60 |
| Moderately Hard | 3.5-7 | 60-120 |
| Hard | 7-10.5 | 120-180 |
| Very Hard | 10.5+ | 180+ |
Need Help With Your Water Treatment System?
Our water treatment experts can help you select and install the perfect water softener for your home. We offer professional installation, maintenance, and a wide range of water treatment solutions.