Eemax HomeAdvantage II 18kW 240V Electric Tankless Water Heater - EHA018240
Compact and 99% energy efficient, this EEMAX electric tankless water heater only heats water on-demand instead of throughout the day for enhanced energy savings. HomeAdvantage II tankless electric water heaters can be installed in a central location or multiple locations throughout the home, like the master bathroom and kitchen. Perfect for apartments, assisted living facilities, condominiums, and multi-family applications.
Choosing the right Eemax tankless electric water heater depends on your climate. Consult the sizing guide to find the correct unit for your home.
Features
- Instant, consistent and endless hot water
- Compact, resistant and stylish with digital temperature control in increments of 1° ranging from 80°F to 140°F
- Copper immersion heating elements with brass top increase durability and are threaded for easy replacement
- Simple Installation
- Digital temperature display
- External controls to adjust temperature
What our Experts Think
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Endless Hot Water On Demand – Electric tankless design delivers continuous hot water without a storage tank, ideal for bathrooms, kitchen, laundry, and more.
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Powerful 18 kW Performance – Higher output supports moderate flow rates (up to ~7 GPM) for showers and multiple fixtures when sized correctly.
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Energy‑Efficient & Compact – ~99% efficiency with no standby heat loss and a slim wall‑mounted profile saves space vs. traditional tank heaters.
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Durable Build Quality – Copper immersion heating elements with brass tops are threaded for easy replacement and long service life.
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Precision Temperature Control – Digital control with adjustable range (~80–140 °F) ensures consistent comfort.
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Professional Installation Required – Requires dedicated 240 V wiring and breaker configuration (e.g., two 40 A circuits) for safe, optimal performance.
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Best Fit for Households & Larger Points‑of‑Use – Recommended where moderate demand exists (showers, sinks), but consult sizing guidelines for multi‑bath homes.
Q&A
Q: What is the Eemax HomeAdvantage II EHA018240?
A: A residential electric tankless water heater that heats water on demand, providing continuous hot water without a storage tank.
Q: How does this tankless model work?
A: It activates when water flows through the unit, ensuring hot water instantly at faucets, showers, or appliances.
Q: Where is this heater typically installed?
A: Designed for indoor installation to serve one or multiple point‑of‑use needs in a home.
Q: What should buyers know about installation?
A: Requires a dedicated 240 V electrical connection and professional installation for safe, code‑compliant setup.
Maintenance Tips
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Inspect inlet/outlet water connections yearly for cracks, leaks, or damage.
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Always turn off power and water supply before servicing or maintenance.
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Flush/descale the unit every 6–12 months to reduce mineral buildup in hard‑water areas.
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Clean the inlet filter regularly to maintain proper water flow and efficiency.
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Keep the installation area clear and ventilated to avoid overheating.
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Set thermostat around 120 °F (49 °C) to minimize scaling and save energy.
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Consider an annual professional inspection to ensure optimal performance and safety.
Damage 
Loss 
Theft 
