Calculadora de Eficiencia del Calentador de Agua Gratis
Compara la eficiencia de calentadores de agua por tipo y calcula el costo anual de operación.
Annual Water Heating Cost
436 USD
Annual Water Heating Cost vs Daily Hot Water Usage
Fórmula
## How to Calculate Water Heater Costs Water heating is typically the second largest energy expense in a home (14-18% of energy bills). ### Formula **Daily BTU = Gallons * Temp Rise * 8.33** **Annual Energy = Daily BTU * 365 / Energy Factor** ### Energy Factors - Standard gas: 0.60-0.70 - High-efficiency gas: 0.80-0.98 - Electric resistance: 0.90-0.95 - Heat pump water heater: 2.0-4.0
Ejemplo Resuelto
50 gal/day hot water, 60F temp rise, 0.92 energy factor, $0.15/kWh.
- 01Daily BTU: 50 * 60 * 8.33 = 24,990 BTU
- 02Daily energy with EF: 24,990 / 0.92 = 27,163 BTU
- 03Annual energy: 27,163 * 365 = 9,914,526 BTU
- 04Annual cost: 9,914,526 / 3,412 * $0.15 = $436
Preguntas Frecuentes
What is the most efficient water heater?
Heat pump water heaters are the most efficient, with energy factors of 2.0-4.0, meaning they use 2-4x less energy than electric resistance heaters. They cost $1,200-2,500 installed.
What temperature should my water heater be set to?
The recommended setting is 120F, balancing safety and efficiency. Every 10F reduction saves 3-5% in water heating costs.
How much of my energy bill is water heating?
Water heating accounts for about 14-18% of the average home energy bill, or $400-600 per year. This makes it the second largest energy expense after HVAC.