Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Water Usage
Water Heater Efficiency Calculator
Estimate your monthly water heating cost in dollars based on hot water usage, temperature settings, heater efficiency, and energy price. Use it to compare operating costs before upgrading to a more efficient unit.
Fill in the required fields to see your result.
Water Usage
Appliance Water Efficiency Calculator
Calculates annual water savings and dollar savings when upgrading to a more water-efficient appliance such as a dishwasher, washing machine, or toilet. Helps homeowners justify the cost of new WaterSense or ENERGY STAR-certified appliances.
Fill in the required fields to see your result.
Key differences
| Water Heater Efficiency Calculator | Appliance Water Efficiency Calculator | |
|---|---|---|
| Category | Water Usage | Water Usage |
| Inputs required | 5 | 4 |
| Result | Monthly Heating Cost ($) | Annual Water Cost Savings ($) |
| What it does | Estimate your monthly water heating cost in dollars based on hot water usage, temperature settings, heater efficiency, and energy price. Use it to compare operating costs before upgrading to a more efficient unit. | Calculates annual water savings and dollar savings when upgrading to a more water-efficient appliance such as a dishwasher, washing machine, or toilet. Helps homeowners justify the cost of new WaterSense or ENERGY STAR-certified appliances. |