How to Choose an Electric Tankless Water Heater for Winter

 

How to Choose an Electric Tankless Water Heater for Winter 

When it comes to home comfort, having a reliable source of hot water is essential. One solution that has gained popularity is the electric tankless water heater. Unlike traditional tank water heaters that store hot water, electric tankless models provide hot water on demand, making them energy-efficient and space saving. In this guide, we will explore how to choose the right electric tankless water heater for your home, ensuring you have the best hot water heater solutions for your needs.

Understanding Electric tankless water heaters

Electric tankless water heaters work by heating water directly as it flows through the unit, which means you do not have to wait for a tank to fill up and heat water. They can be installed at the point of use (like a bathroom sink) or centrally for the entire house. This instant heating capability not only saves energy but also provides a continuous supply of hot water, which is especially beneficial for larger families or homes with high hot water demand.

Key Factors to Consider

1. Determine Your Hot Water Needs

Before selecting an electric tankless water heater, it is crucial to assess your household’s hot water requirements. Consider the number of people living in your home, the frequency of hot water use, and the types of appliances that require hot water (like dishwashers and washing machines). This information will help you determine the flow rate you need, measured in gallons per minute (GPM).

For example, a home with two bathrooms may require a flow rate of at least 5 GPM during peak usage times, such as when showers and dishwashers are running simultaneously. When choosing the best electric tankless water heater, be sure to account for your maximum hot water needs.

2. Check the Temperature Rise

The temperature rise is the difference between the incoming water temperature and the desired output temperature. To select the right model, you need to know the incoming water temperature, which can vary depending on your geographic location and season. In general, incoming water temperatures can range from 40°F to 60°F.

If you want to achieve a hot water output of around 120°F, you will need to calculate the temperature rise. For instance, if the incoming water temperature is 50°F, you will need a heater capable of providing a 70°F rise at the required flow rate. Check the specifications of various models to find one that meets these requirements.

3. Choose the Right Size

Electric tankless water heaters come in various sizes and power levels. The size you choose should match your hot water needs and the available electrical supply in your home.

• Power Rating: Most electric tankless models range from 3 to 30 kilowatts (kW). Higher power ratings usually mean higher flow rates and faster heating. However, your home’s electrical system must support the heater’s requirements, which may require upgrades to your electrical panel.
• Physical Size: Consider the available space for installation. Tankless heaters can be mounted on walls, so they take up less floor space than traditional units do.

Consult with a licensed electrician or drain plumbing company to ensure your electrical system can handle the new unit.

4. Energy Efficiency

One of the significant advantages of an electric tankless water heater is its energy efficiency. Look for models with high-energy factor (EF) ratings, as these indicate better efficiency. The higher the EF, the more efficient the unit will be, which can lead to lower energy bills.

Additionally, consider whether the unit is certified by Energy Star, which indicates it meets strict energy efficiency guidelines set by the U.S. Environmental Protection Agency. Investing in an energy-efficient model can save you money in the long run.

5. Warranty and Support

When choosing an electric tankless water heater, it is essential to consider the manufacturer’s warranty and customer support. A longer warranty typically indicates the manufacturer’s confidence in their product. Most electric tankless water heaters come with warranties ranging from 5 to 15 years, covering parts and sometimes labor.

Check customer reviews and ratings to gauge the quality of customer service provided by the manufacturer. Good customer support can be invaluable when it comes to installation and maintenance.

Installation Considerations

Once you have chosen the right electric tankless water heater, proper installation is critical for optimal performance. If you are not experienced with plumbing or electrical work, it is advisable to hire a professional. Poor installation can lead to inefficiencies, leaks, and even safety hazards.

A qualified plumber can also assist with tank water heater replacement if you are transitioning from a traditional model. They will ensure that the unit is correctly wired and plumbed, providing you with peace of mind.

Maintenance Tips for Electric tankless water heaters

To keep your electric tankless water heater running efficiently, regular maintenance is essential. Here are some tips:

• Descale the Unit: Over time, minerals can build up in the heater. Regularly descaling the unit (typically once a year) can help prevent this issue and extend its lifespan.
• Check Filters: Some units have inlet filters that can become clogged. Regularly check and clean these filters to maintain optimal flow rates.
• Professional Servicing: Consider scheduling a maintenance check with a professional every few years. They can perform thorough inspections and necessary repairs, such as tankless water heater repair, if needed.

Final Thoughts

Choosing the right electric tankless water heater for your home involves careful consideration of your hot water needs, the temperature rise, size, energy efficiency, and warranty. By following these guidelines, you can find a unit that meets your household requirements and provides reliable hot water for years to come.

Investing in an electric tankless water heater is not only a smart choice for energy efficiency but also a step toward modernizing your home’s plumbing system. Whether you’re upgrading from a traditional hot water heater or installing a new system, understanding your options and making informed decisions will ensure you have the best hot water heater solutions for your family’s needs.

FAQs

 

The main downsides include:

1. Higher Initial Cost: They often cost more to purchase and install than traditional tank heaters.
2. Flow Rate Limitations: If multiple hot water sources are used at once, you may run out of hot water.
3. Electrical Demand: They require significant electricity, which might necessitate upgrades to your home’s wiring.
4. Temperature Fluctuations: You may experience inconsistent water temperatures during peak usage.

 

Switching can be worthwhile if you prioritize:

1. Energy Efficiency: They use less energy since they heat water on demand, leading to potential savings.
2. Space Savings: Their compact size frees up space compared to bulky tank heaters.
3. Endless Hot Water: They provide a continuous supply, ideal for larger households.
4. Longevity: They typically last longer than traditional models.

Consider your household’s hot water needs to determine if a switch is right for you.

 

Yes, they use a significant amount of electricity during operation, especially when heating water. However, they are generally more efficient than traditional tank heaters, which continuously use energy to maintain hot water. Their overall consumption depends on your hot water usage patterns and the unit’s efficiency rating. While they can increase electricity costs during use, they may lead to lower overall energy bills over time.