Hot Water Cost Calculator
Include temperature rise, heater performance and water cost.
Calculation
Estimated cost
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How to use this tool
Enter water volume, the temperature rise above the inlet temperature, and the heating method. Use efficiency as a percentage or heat-pump COP as a ratio. The result adds water and input-energy charges and excludes storage or pipe losses.
Real-Life Examples
- Heating 100 liters for a family
- Price one daily shower at its mixed temperature
- Convert two shower routines into monthly heated volume
- Combine hot-water demand from separate fixtures
- Compare winter and summer inlet temperatures
- Compare two outlet targets for a fixed draw
- Compare two heat-pump operating conditions
- Budget electric hot water across two rate windows
- Price a gas heater using input energy units
- Shorten a warm-water cleaning session
- Separate water and heating costs for a tub fill