5 Best Electric Tankless Water Heater for Small House [In 2025]

Are you tired of dealing with the limitations of traditional tank water heaters in your small house? Look no further than the best electric tankless water heaters, which can provide an endless supply of hot water on-demand while saving you valuable space and energy. In this comprehensive review, we’ll explore the top options available on the market to help you find the perfect fit for your home.

Tankless water heaters have gained popularity in recent years due to their numerous advantages over traditional tank-style models. These compact, energy-efficient units heat water instantly as it flows through, eliminating the need for a large storage tank and reducing standby heat loss. This makes them an ideal choice for small houses where space is at a premium. In this review, we’ll examine three top-rated electric tankless water heaters that cater to the needs of homeowners in small living spaces.

5 Best Electric Tankless Water Heater for Small House Reviews

Titan Electric Tankless Water Heater

Specs

– Tankless Water Heater
– 220 V
– 54 Max Amps

Pros

– Reliable and easy to install
– Compact size, no larger than a phone book
– Great investment that saves money on energy bills
– Works well in cold climates

Cons

– Mixed feedback on temperature control and lifespan

27kW Tankless Water Heater Electric

Specs

– Endless Hot Water with 27kW Heating Element
– Intelligent Energy Management for Consistent Temperature and Efficiency
– Effortless Operation with Temperature Adjustment
– Intuitive LED Display for Real-Time Monitoring
– Safety-Focused Design with ETL Certification

Pros

– Delivers instant hot water on demand
– Automatically adjusts heating power for consistent temperature
– Simple to use with temperature control buttons
– Provides real-time system monitoring and error indicators
– Incorporates safety features like overheat prevention

Cons

– Requires professional installation due to high electrical demand

14kW Tankless Water Heater Electric

Specs

– Instant Hot Water in Just 3 Seconds
– Powerful 3 GPM Flow Rate for Whole House Use
– Energy Efficient with On-Demand Heating
– Compact and Convenient Design
– One-Year Return and Exchange Service

Pros

– Provides hot water instantly, no waiting
– Suitable for simultaneous use across multiple fixtures
– Reduces energy waste and lowers utility bills
– Space-saving design fits in smaller areas
– Backed by a one-year warranty and customer support

Cons

– Requires professional electrical installation

EcoSmart ECO 27 Tankless Water Heater

Specs

– Voltage: 240V
– Phase: Single
– Power: 27kW
– Frequency: 50/60Hz
– Temperature Control: Digital

Pros

– Provides consistent hot water for multiple fixtures
– Easy professional installation, with option for DIY setup
– Saves space and money on energy bills
– Digital temperature control for precise settings
– Backed by positive long-term user experiences

Cons

– Mixed reviews on temperature stability and energy efficiency
– Some reports of premature failure after about a year of use

Stiebel Eltron Tankless Water Heater – Tempra 29 Trend

Specs

– Continuous Flow for Uninterrupted Hot Water
– Space and Energy Saving Design
– Silent Operation with Digital Temperature Display
– 28.8kW, 240V, Recommended 200A Electric Service
– 7-Year Leakage and 3-Year Parts Warranties

Pros

– Provides endless hot water without interruption
– Compact, space-saving, and energy-efficient unit
– Quiet operation with easy-to-read digital controls
– Backed by industry-leading warranties

Cons

– Limited customer feedback available

Buying Guide

When choosing the best electric tankless water heater for your small house, consider the following factors:

Power and Capacity

– Determine the appropriate power output (kW) and flow rate (GPM) based on your household’s hot water needs.
– Higher power ratings can handle greater hot water demand, but require more electrical capacity.
– Consider the temperature rise needed for your climate and water supply.

Installation and Electrical Requirements

– Ensure your home’s electrical system can support the tankless heater’s power demands.
– Professional installation by a licensed electrician is recommended for safety and warranty compliance.
– Check the required breaker size, wire gauge, and other electrical specifications.

Energy Efficiency and Cost Savings

– Look for features like self-modulating technology to optimize energy usage.
– Evaluate the potential energy savings compared to a traditional tank heater.
– Consider the long-term operating costs and return on investment.

Durability and Lifespan

– Review the product’s construction quality and materials.
– Examine customer feedback on the unit’s reliability and longevity.
– Check the warranty coverage for leaks, parts, and overall performance.

Size and Convenience

– Prioritize a compact, space-saving design that fits your small house layout.
– Look for features like digital temperature controls and real-time monitoring.
– Ensure the unit can provide hot water to the necessary number of fixtures simultaneously.

FAQ

1. How do I determine the right size tankless water heater for my small house?
2. Can I install an electric tankless water heater myself, or does it require a professional?
3. How much can I expect to save on my energy bills with a tankless water heater?
4. What is the typical lifespan of an electric tankless water heater?
5. How do I maintain and care for my electric tankless water heater to ensure optimal performance?

Conclusion

Upgrading to an electric tankless water heater can be a game-changer for small house living. The reviewed models offer a seamless combination of instant hot water, energy efficiency, and compact design – making them an ideal solution for homeowners seeking to maximize their limited space. By carefully evaluating your household’s needs and considering the key factors in our buying guide, you can confidently select the best electric tankless water heater to meet your small house requirements.