Instant hot water, energy efficient: the essential guide to electric tankless water heaters
What To Know
- Unlike traditional tank water heaters that store heated water in a large tank, tankless water heaters heat water instantly as it flows through the unit.
- Unlike tank water heaters that have a limited capacity, electric tankless water heaters provide an endless supply of hot water as long as there is electricity available.
- In some cases, electric tankless water heaters may experience a “cold water sandwich effect,” where a burst of cold water is felt between hot water cycles.
Tankless water heaters, also known as instant or on-demand water heaters, have gained significant popularity in recent years due to their energy efficiency and space-saving design. Unlike traditional tank water heaters that store heated water in a large tank, tankless water heaters heat water instantly as it flows through the unit. This eliminates standby heat loss and provides a continuous supply of hot water without the need for a storage tank.
Exploring the Electric Tankless Water Heater Option
While tankless water heaters come in both gas and electric models, this article focuses specifically on electric tankless water heaters. Electric tankless water heaters utilize electricity to heat water, eliminating the need for a gas connection. They are often preferred in areas where gas is not readily available or where natural gas prices are high.
Advantages of Electric Tankless Water Heaters
Electric tankless water heaters offer several advantages over both traditional tank water heaters and gas tankless water heaters. These advantages include:
- Energy Efficiency: Electric tankless water heaters are highly energy-efficient as they only heat water when needed, eliminating standby heat loss. This can result in significant energy savings compared to traditional tank water heaters.
- Unlimited Hot Water: Unlike tank water heaters that have a limited capacity, electric tankless water heaters provide an endless supply of hot water as long as there is electricity available. This is ideal for households with high hot water demand or for those who enjoy long showers.
- Compact Size: Electric tankless water heaters are compact and can be easily installed in tight spaces, such as under sinks or in closets. This makes them a great option for small homes or apartments where space is limited.
- No Flue Required: Electric tankless water heaters do not require a flue, which simplifies installation and eliminates the need for venting through the roof.
Disadvantages of Electric Tankless Water Heaters
While electric tankless water heaters offer many advantages, there are also a few disadvantages to consider:
- High Initial Cost: Electric tankless water heaters typically have a higher initial cost compared to traditional tank water heaters.
- Limited Flow Rate: Electric tankless water heaters have a limited flow rate, which means they may not be able to provide enough hot water for multiple simultaneous high-demand applications, such as multiple showers running at once.
- Cold Water Sandwich Effect: In some cases, electric tankless water heaters may experience a “cold water sandwich effect,” where a burst of cold water is felt between hot water cycles.
Factors to Consider When Choosing an Electric Tankless Water Heater
When selecting an electric tankless water heater, it is important to consider the following factors:
- Flow Rate: Determine the required flow rate based on the number of fixtures and appliances that will be using hot water simultaneously.
- Energy Efficiency: Look for models with high energy efficiency ratings to maximize energy savings.
- Warranty: Choose a water heater with a comprehensive warranty to ensure peace of mind and protect against unexpected repairs.
- Installation: Consider the installation requirements and costs associated with the specific model you are considering.
Installation and Maintenance of Electric Tankless Water Heaters
Electric tankless water heaters require professional installation by a qualified electrician. They should be connected to a dedicated electrical circuit with the appropriate voltage and amperage. Regular maintenance, including draining the unit and cleaning the heating elements, is recommended to ensure optimal performance and extend the life of the water heater.
Final Thoughts
Electric tankless water heaters offer a number of advantages, including energy efficiency, unlimited hot water, compact size, and no flue requirement. However, they also have some disadvantages, such as higher initial cost, limited flow rate, and potential for a cold water sandwich effect. By carefully considering the factors discussed in this article, you can make an informed decision about whether an electric tankless water heater is the right choice for your home.
Frequently Asked Questions
1. How much does it cost to run an electric tankless water heater?
The cost of running an electric tankless water heater depends on several factors, including the size of the unit, the water usage, and the local electricity rates. However, electric tankless water heaters are typically more energy-efficient than traditional tank water heaters, resulting in lower monthly energy bills.
2. How long do electric tankless water heaters last?
The lifespan of an electric tankless water heater typically ranges from 10 to 20 years. Regular maintenance and proper installation can help extend the life of the unit.
3. Can electric tankless water heaters handle multiple simultaneous showers?
The ability of an electric tankless water heater to handle multiple simultaneous showers depends on the flow rate of the unit and the demand from the fixtures. Some models may not be able to provide enough hot water for multiple high-demand applications running at the same time.