Water Heater Sizing Calculator vs Water Heater Efficiency Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
Water Heater Sizing Calculator
Determines the minimum tank capacity (in gallons) your household needs based on occupants, bedrooms, bathrooms, usage pattern, and heater efficiency. Use it before buying or replacing a water heater.
- Answers
- Recommended Tank Size (gallons)
- Inputs
- Number of Occupants, Number of Bedrooms, Number of Bathrooms, Usage Pattern, Heater Efficiency
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.
- Answers
- Monthly Heating Cost ($)
- Inputs
- Daily Hot Water Usage, Incoming Water Temperature, Target Hot Water Temperature, Water Heater Efficiency, Energy Cost
At a glance
| Water Heater Sizing Calculator | Water Heater Efficiency Calculator | |
|---|---|---|
| Category | Plumbing | Water Usage |
| Answers | Recommended Tank Size | Monthly Heating Cost |
| Inputs | 5 | 5 |
| Result unit | gallons | $ |
When to use each
Determines the minimum tank capacity (in gallons) your household needs based on occupants, bedrooms, bathrooms, usage pattern, and heater efficiency. Use it before buying or replacing a water heater.
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.