1. How much electricity does a water heater consume?

Water heater is considered one of the highest power consumption appliances in your home, but the water heater is an essential appliance in life, so calculating the power consumption of the water heater is very important to you, there are many factors affecting the loss of power consumption of the water heater, if you want to calculate the power consumption of the water heater you need to get the water heater’s power consumption and operating hours of two key parameters.

First of all, different brands and models of water heaters power consumption power has a big difference, take the type of electric water heater, there are common instantaneous water heaters and solar water heaters, usually instantaneous water heaters can be heated to a certain temperature in a short period of time, so the power is larger, generally up to 3,000-7,000 watts, but the solar water heaters heat the water for a long time, so the power is smaller, generally up to 600-16,000 watts, but the solar water heater can heat the water for a long time, so the power is smaller, generally up to 600-1,600 watts. The following are the common water heaters in the market:

Secondly, you need to get the daily working hours of your home’s electric water heater, and it is not difficult to get this data, take the A.O. Smith CTE-60AS, an electric water heater that has an internal system responsible for recording the working hours of the device, and you can check the working hours of your home’s water heater through a special app on your phone. Moreover, you can also set the water heater to heat up on a timer so that you can also get the working hours of your water heater.

After getting the above two key data, you can calculate the monthly power consumption of your water heater. Assuming that the power consumption of your water heater is 4000watt, and it works for 3 hours a day on average, according to the power consumption of water heater in a month = average working hours per day x power consumption of water heater x 30.

Substitute the data to the water heater each month to get the power consumption of 360kWh, according to the relevant data show that the price of electricity is about 0.08 $ / kWh, so the water heater’s monthly electricity bill is about 28.8 $, it can be seen, the water heater will produce a fairly large amount of electricity.

2. Is there any way to save money on your water heater?

Using solar panels to power your water heater is a smart choice, and using solar panels makes good use of your roof space. Regarding the size of the solar system you can use to save money on your water heater, you will need to know the peak sunlight hours in your area and the type of solar system you are using.

For example, if you are in an area with 5 hours of peak sunlight and you are going to use a grid-tied solar system, which has an energy conversion efficiency of 95%, and you know these two key figures, you can calculate the size of the solar system you will need by using the following formula.

Electricity consumed by the water heater / conversion efficiency of the grid-connected solar system / peak sunshine hours / 30 = 2.5kW photovoltaic panels, i.e., you need to build a 2.5kW solar energy system, under normal circumstances, the construction of a 2.5kW solar energy system requires roughly 190ft2 of roof area, the normal home roof area of about 650ft2, you can build a 2.5kW solar energy system is completely sufficient. system is completely enough.

3. How to Reduce Electricity Consumption of Water Heater

3.1 Setting the water heater to work in the low period of electricity consumption.

Setting your water heater to operate during low periods can save you a considerable amount of money on your electricity bill, because low periods are the lowest time of the day for electricity. For example, if you are in an area where the trough period is from 14:00 to 16:00, you can set the water heater to work during this period of time. Of course, you don’t have to worry about the temperature of the water being too low when you use it because the water heater has a very good heat preservation function.

3.2 Choosing the right water heater

Choosing the right water heater can reduce the power consumption of the water heater, which in turn can save you a considerable amount of money on electricity. For example, you can choose to buy solar water heaters, this kind of water heater can be heated by solar energy when it is sunny, thus reducing the amount of electricity used by your water heater, of course, choose a water heater with a lower energy consumption level, this kind of water heater consumes less electricity compared with water heaters with a high energy consumption level, which can be seen as a reduction in the water heater’s electricity bill.

3.3 Remove scale from water heaters in time

Water heater after a period of time most of the internal scale will be formed, this scale will affect the heat exchange efficiency inside the water heater, for example, the original heating of 60L of water takes an hour, now due to the impact of scale heating 60L of water takes 1 hour and 15 minutes, so the water heater will increase the amount of electricity consumed, the cost of electricity will rise, so you need to use professional tools regularly! Therefore, you need to remove the scale inside the water heater regularly with a professional tool.

3.4 Selecting the right heating temperature

Choosing the right heating temperature is a good way to reduce your electricity bill. For example, if the water you use for bathing is about 40℃, there is no need to heat the water to 80℃, which will waste a lot of electricity, and your experience will be reduced, so you should heat the water to the right temperature for different uses of the hot water, and in this way, the electricity bill you pay for the water heater every month will be reduced.

4. Summary

By knowing more about the formula for calculating the electricity consumption for water heater working, you can plan the electricity consumption of your home wisely, those methods about saving electricity cost for water heater usage will help you, of course, installing a suitable solar power system can help you solve the problem in this aspect, if you have an idea, just take action.