Introduction: As one of the essential appliances in the family, the importance of the choice of electric water heater is self-evident.
The wattage of an electric water heater is directly related to the efficiency and energy consumption of hot water supply.
So, how to choose the right wattage electric water heater? This article will answer this question for you and make it easy for you to solve your hot water dilemma.
1. Understand the importance of wattage of electric water heaters
Electric water heater wattage refers to the amount of electricity consumed by an electric water heater per unit of time, measured in watts (W).
The higher the wattage, the faster the water heater will heat up, but the corresponding energy consumption will also be higher.
Therefore, choosing an electric water heater with the right wattage can not only meet the hot water demand of the household, but also save electricity.
2. Factors affecting the choice of wattage of electric water heaters
1. Number of family members
The number of people in the household is an important factor in determining the wattage of an electric water heater.
The larger the population, the greater the demand for hot water and the higher the wattage of the electric water heater required.
2. Water habits
Different households have different water habits, such as bath time, water consumption, etc.
The greater the water consumption, the higher the wattage of the water heater.
3. The area of the house
The larger the area of the house, the farther the hot water transmission distance, and the greater the hot water loss.
Therefore, families with larger housing areas should choose electric water heaters with higher wattage.
4. Regional climate
The continent is vast and has a large difference in climate.
In cold regions, the wattage required by the electric water heater should be higher to ensure the supply of hot water.
3. How to choose an electric water heater with the right wattage
1. Calculate household hot water demand
Estimate your household's daily water consumption.
The following are the reference data:
- Bathing: about 40-60 litres of hot water per person per session
- Face and hand washing: About 10 liters of hot water per person per session
- Laundry: about 30-50 litres of hot water per session
Based on the number of households and water consumption habits, the total daily hot water demand is calculated.
2. Estimate the electric water heater power
Calculate the required electric water heater power (wattage) according to the following formula:
Power (W) = Total Hot Water Demand (L) × Temperature Increase (°C) ×1.163 (Specific Heat Capacity of Water) ÷ Heating Time (Hours)
For example, a family of four uses 200 litres of water per day for bathing, a 30°C temperature increase, and a heating time of 1 hour, and the electric water heater power required is:
200×30×1.163÷1=7078W
3. Choose an electric water heater with the right wattage
Based on the results of the calculations, an electric water heater with a power of slightly more than 7078W was selected.
Generally, the power range of electric water heaters on the market is 1500W-8000W, and you can choose 1800W, 2200W, 3000W and other specifications.
4. Precautions
1. Consider the installation location: The electric water heater should be installed in a ventilated, dry, and easy-to-access place.
2. Consider safety performance: Choose an electric water heater with safety features such as anti-dry burning, anti-overpressure, and anti-electric wall.
3. Energy saving and environmental protection: Try to choose an electric water heater with first-class energy efficiency to reduce energy consumption.
Summary: Choosing an electric water heater with the right wattage can not only meet the hot water needs of the household, but also save electricity.
Through the above methods, I believe you have mastered the skills of choosing the wattage of the electric water heater, and easily solve the hot water problem.