July 28, 2021
General Electric Water Heater, heating 3 hours a day, 1500 wattage calculation, annual electricity consumption: 1.5 * 3 * 365 = 1642.5 degrees of air energy water heater, efficiency of ordinary water heater 3-4 times, take 3.5 calculation, 1,642.5/3.5 = 469.2 degrees per year of electricity consumption.
That is to say, the same amount of hot water and air can save 1,642.5-469.2 = 1,173.3 degrees per year of electricity consumption, at a unit price of 0.6 yuan per year, 704 yuan per year of electricity consumption can be saved.
Based on the unit price of 2000 yuan for ordinary electric water heater and 5000 yuan for air energy water heater, 3000/704 = 4.26 years, that is to say, the cost of ordinary electric water heater is the same as that of air energy water heater in 4.26 years.
If both are used for 8 years, the total cost of Air Energy is: 8 * 469.2 * 0.6 + 5,000 = $7,252 the total cost of an ordinary electric water heater is: 8 * 1642.5 * 0.6 + 2000 = $9,884 the total cost of air energy is 984-7252 = $2,632 if used for 10 years, then the total cost of Air Energy is: 10 * 469.2 * 0.6 + 5,000 = $7,815 the total cost of an ordinary electric water heater is: 10 * 1642.5 * 0.6 + 2,000 = $11,855 the total cost of air energy is 11,855-7815 = $4,040 less than that of an ordinary electric water heater.
