
If you’re looking to upgrade your home’s water heating system, electric tankless water heaters offer an energy-efficient, space-saving solution. For a detailed guide, check out https://anytimeplumbing.net/best-electric-tankless-water-heater/. Unlike traditional tank-style water heaters, these units provide hot water on demand, eliminating the need for a bulky storage tank and reducing wasted energy. In addition, they offer the advantage of nearly endless hot water, making them an ideal choice for modern households of all sizes.
Understanding Electric Tankless Water Heaters
Electric tankless water heaters function by heating water only as it passes through the unit, rather than storing it in a tank. This design brings several significant advantages:
- Energy Efficiency: Traditional water heaters maintain a tank of hot water, leading to constant standby energy loss. Tankless systems only heat water when needed, potentially reducing energy consumption by up to 50%.
- Space-Saving Design: These compact units can be installed in smaller areas such as closets, basements, or utility rooms, freeing up valuable floor space.
- Continuous Hot Water: Unlike traditional tanks, which can run out of hot water, tankless heaters provide an uninterrupted supply as long as the demand does not exceed the system’s capacity.
- Longer Lifespan: Tankless water heaters generally last longer than tank models, often 15–20 years, with proper maintenance and care.
Top Electric Tankless Water Heater Picks for 2025
Stiebel Eltron Tempra 36 Trend
The Stiebel Eltron Tempra 36 Trend is well-known for its excellent efficiency and performance. Key features include:
- Flow Rate: Up to 7.5 gallons per minute (GPM), making it suitable for large households.
- Efficiency: 99% energy efficiency rating minimizes wasted electricity.
- Advanced Features: Includes digital temperature control and advanced flow control technology for consistent water temperature, even with varying flow.
This model is ideal for families with multiple bathrooms and high hot water demands.

EcoSmart ECO 27
EcoSmart’s ECO 27 model balances affordability with high performance:
- Flow Rate: Up to 6.6 GPM, sufficient for medium-sized homes.
- Efficiency: 94% efficiency, helping lower energy bills.
- Technology: Self-modulating feature adjusts energy usage depending on hot water demand, ensuring optimal performance.
Perfect for homes with 2–3 bathrooms, the ECO 27 offers reliable, on-demand hot water at a reasonable price.
Thermomate 18kW
Thermomate 18kW is ideal for small households or apartments:
- Flow Rate: Up to 4.5 GPM, sufficient for smaller homes.
- Efficiency: Exceptional 99.8% efficiency rating.
- Design: Compact size allows installation in tight spaces.
This model provides excellent performance while taking up minimal space, making it perfect for apartments or condos.
Rheem RETEX-36 Performance
The Rheem RETEX-36 caters to larger homes requiring high hot water output:
- Flow Rate: Up to 8.8 GPM, ideal for homes with multiple bathrooms and simultaneous water usage.
- Efficiency: High efficiency rating reduces energy costs over time.
- Features: Built-in safety features and durable construction make it reliable for long-term use.
Large families or households with high simultaneous water needs will benefit most from this model.

Factors to Consider When Choosing a Tankless Water Heater
Selecting the right electric tankless water heater requires attention to several important factors:
- Flow Rate: Determine your household’s peak hot water demand and ensure the unit’s GPM can accommodate it.
- Temperature Rise: Calculate the difference between your incoming water temperature and your desired hot water temperature to select an appropriate unit.
- Electrical Requirements: Confirm your home’s electrical system can safely handle the unit’s voltage and amperage requirements.
- Installation Space: Ensure proper clearance and ventilation for safe installation.
- Budget: While tankless units may have a higher upfront cost than traditional heaters, the long-term energy savings often justify the investment.
Benefits Beyond Energy Savings
In addition to energy efficiency and space-saving advantages, tankless water heaters offer other perks:
- Reduced Risk of Leaks: Without a storage tank, there is less chance of leaks and water damage.
- Eco-Friendly: Reduced energy use translates to lower carbon emissions.
- Consistent Performance: Modern units maintain steady water temperatures regardless of flow variations.
- Low Maintenance: Routine descaling and cleaning can extend the lifespan and efficiency of these units.
Conclusion
Electric tankless water heaters provide a modern, efficient, and practical solution for homes of all sizes. The models discussed above represent some of the best options for 2025, catering to various household sizes and budgets. By evaluating flow rate, temperature rise, electrical compatibility, and installation requirements, homeowners can choose a unit that ensures reliable, endless hot water while saving energy and space. Investing in a high-quality tankless water heater is a smart move for both comfort and long-term savings.



