Top 5 Best water heater tankless electric in America (2025)

If you’re looking for the best electric tankless water heater, you’ve come to the right place! We have listed the top 5 tankless electric water heaters that are energy-efficient, compact, and high-performing. Check out our top picks below!

1. Stiebel Eltron Tempra 36 Plus water heater tankless electric

We have placed the Stiebel Eltron Tempra 36 Plus at the top of our list. If you need an instant and energy-efficient water heater, this can be a great choice. It also offers Digital Temperature Control and a space-saving design perfect for small spaces.

Specifications:

✅ Advanced Flow Control
✅ Digital Temperature Control
✅ Energy Efficient
✅ Compact & Sleek Design
✅ Silent Operation

Pros:

✔️ Highly durable and long-lasting
✔️ Maintains consistent water temperature
✔️ Saves space with a sleek design

Cons:

❌ Slightly expensive compared to competitors
❌ Requires professional installation

2. EcoSmart ECO 27 water heater tankless electric

The EcoSmart ECO 27 is a powerful tankless electric water heater that provides endless hot water with self-modulating technology for maximum efficiency.

Specifications:

✅ Self-Modulating Technology
✅ Endless Hot Water
✅ Compact & Space-Saving Design
✅ Precise Digital Temperature Control
✅ Energy Efficient

Pros:

✔️ Highly energy-efficient with self-modulating technology
✔️ Provides unlimited hot water on demand
✔️ Compact and easy to install

Cons:

❌ May require additional electrical upgrades
❌ Not ideal for large households

3. Rheem Professional Classic RTEX-11 water heater tankless electric

The Rheem Professional Classic RTEX-11 ranks third because of Rheem’s strong reputation for high-quality and durable water heaters. This model features advanced self-modulating technology and digital temperature control for precision heating.

Specifications:

✅ Self-Modulating Technology
✅ Instant & Endless Hot Water
✅ Digital Temperature Control
✅ Compact & Space-Saving Design
✅ Durable Copper Immersion Heating Elements – Long-lasting performance
✅ 99.8% Energy Efficiency

Pros:

✔️ Highly energy-efficient (99.8%)
✔️ Long-lasting and durable heating elements
✔️ Provides consistent hot water

Cons:

❌ Installation may require professional help
❌ Not ideal for extremely cold climates

4. Eemax 27kW water heater tankless electric

The Eemax 27kW is a great choice for those who need a quick and energy-efficient water heater. It offers a digital temperature control system and a space-saving design for convenience.

Specifications:

✅ Self-Modulating Technology
✅ Endless Hot Water Supply
✅ Digital Temperature Control
✅ Compact & Space-Saving Design
✅ High Energy Efficiency

Pros:

✔️ Delivers hot water instantly
✔️ High energy efficiency
✔️ Saves space and easy to install

Cons:

❌ Not suitable for extremely large households
❌ Requires high electrical capacity

5. Stiebel Eltron DHC Trend water heater tankless electric

The Stiebel Eltron DHC Trend is another excellent tankless water heater that provides instant hot water with hydraulic control technology and a fixed temperature limit for safety.

Specifications:

✅ Hydraulic Control Technology
✅ Instant Hot Water
✅ Energy Efficient
✅ Compact & Space-Saving Design
✅ Temperature Control – Fixed temperature limit
✅ No Venting Required

Pros:

✔️ Easy to install with no venting required
✔️ Provides quick and consistent hot water
✔️ Compact and efficient design

Cons:

❌ Temperature is pre-set and not adjustable
❌ Not ideal for larger homes

Last Says

Each of these top 5 tankless electric water heaters has unique features, but all are energy-efficient, compact, and provide endless hot water. If you need high efficiency and premium features, the Stiebel Eltron Tempra 36 Plus is a top pick. If you’re looking for a budget-friendly yet powerful option, EcoSmart ECO 27 is a great choice.

✅ Which one will you choose? Let us know in the comments! 🔥