More and more people are choosing to install electric water heaters, which have become a convenient and essential part of modern living. However, using these devices safely and efficiently is just as important as their installation. In this article, we’ll walk you through the proper usage of electric water heaters, focusing on both instant and storage types, to help you maximize their performance while ensuring your safety.
How Electric Water Heaters Work
Electric water heaters operate by controlling the temperature through a thermostat. The basic concept is that they heat water when the temperature drops below a certain threshold and stop once the desired temperature is reached. Most models are set to maintain a temperature between 75°C and 85°C. When the water cools below 50°C, the thermostat activates, and the heater turns on. Once the target temperature is achieved, it automatically shuts off to save energy and prevent overheating.
There are two main types of electric water heaters: instantaneous (also known as on-demand) and storage. Each has its own advantages and ideal use cases, so understanding how to use them correctly can significantly improve their efficiency and lifespan.
Proper Usage of Instant Electric Water Heaters
Instant electric water heaters are designed for quick heating and are commonly used in bathrooms for showers or in kitchens for daily hot water needs. These models are energy-efficient because they only heat water when needed, reducing heat loss compared to storage types.
Here are some key tips for using an instant electric water heater:
- Initial Setup: Before using the unit for the first time, make sure to flush the system with water and then turn on the power. This prevents the unit from running dry and potentially damaging the internal components.
- Turn Off After Use: Always switch off the power and close the water supply after each use to avoid unnecessary energy consumption and potential leaks.
- Clean the Filter Regularly: Over time, sediment and debris can accumulate in the filter, causing blockages. Cleaning it periodically ensures smooth water flow and prolongs the life of the unit.
- Replace the Magnesium Rod: Most electric water heaters come with a magnesium rod, which acts as a sacrificial anode. It corrodes instead of the inner tank, protecting it from rust and extending the unit's lifespan.
- Regular Maintenance: Scale buildup inside the tank and on the heating elements can reduce efficiency. It’s recommended to clean the unit every few months to maintain optimal performance and prevent damage caused by overheating.
How to Use Storage Electric Water Heaters Properly
Storage electric water heaters store heated water in a tank, making them ideal for households that require a continuous supply of hot water. While they may not be as energy-efficient as instant models, they are more affordable and widely used in many homes.
Here are some best practices for using storage-type units:
- Power Management: If hot water is used infrequently (e.g., once every few days), it’s better to turn off the unit when not in use. Turn it on an hour before you need hot water to save energy.
- Efficient Heating Schedule: For daily use but with limited hot water demand, you can activate the heater one hour before use and keep other functions turned off to reduce energy costs.
- Keep It On for Frequent Use: If you frequently use large amounts of hot water, it’s better to leave the unit on. Adjust the temperature based on your usage to balance comfort and energy savings.
- Water Flow Safety: Always fill the tank with cold water before turning on the heater. Ensure the tap is open to prevent pressure build-up. When using, always open the cold water first, then the hot water, and reverse when turning off to avoid scalding.
While storage water heaters are less efficient than their instant counterparts, they remain popular due to their affordability and reliability. With proper maintenance and smart usage, they can serve your household for many years.
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