Water heating
(Redirected from Hot water)
This page is about hot water systems in homes & buildings.
Types
- solar thermal panels
- electric water heating
- natural gas water heating
Energy use
49'C is considered the ideal hot water temperature. Anything hotter is a safety hazard (scalding). If water is coming in to the building at a typical 9'C, then that's a 40 degree (kelvin) difference.
Physics shows how much energy it takes to heat the water: Same calculation shown in multiple different units:
Electricity
(calculation loading)
British Thermal Units
(calculation loading)
Fuel burned to heat each gallon of water (American units)
(calculation loading)