Best Electric Water Heaters for Homes
Discover top electric water heaters that deliver reliable hot water for home use. This guide compares performance, efficiency, and ease of installation across select models to help you choose the right system for your needs.
| Product | Brand | Type | Approximate Capacity/Flow | Key Benefit |
|---|---|---|---|---|
| Orbek 14kW Tankless Electric | Orbek | Tankless | Up to 3.38 GPM | Compact, high efficiency for 2-3 uses |
| Rheem 18kW 240V Tankless Electric | Rheem | Tankless | Up to 4.4 GPM | Advanced self-modulation, durable elements |
| Orbek 18kW Tankless Electric | Orbek | Tankless | Up to 4.17 GPM | High output for multiple fixtures |
| Rheem RTEX-24 24kW | Rheem | Tankless | High flow, up to 4+ GPM | Strong performance for whole-home use |
| EcoSmart ECO 11 | EcoSmart | Tankless | 13 kW at 240V | Self-modulating, space-saving design |
Orbek 14kW Tankless Electric Water Heater
The Orbek 14kW Tankless Electric Water Heater is designed for on-demand hot water with a compact footprint. It requires a 240V/60A two-pole breaker, uses 6 AWG wiring, and 1/2″ NPT connections. Capable of delivering up to 3.38 GPM, it serves 2-3 fixtures simultaneously, offering instant hot water in just a few seconds. The unit employs water-electricity separation to reduce scale and corrosion, aiming to lower electricity costs versus traditional tank systems. This model emphasizes quick response and energy efficiency for point-of-use installations.
Rheem 18kW 240V Tankless Electric Water Heater
The Rheem 18kW model features an external digital thermostat with an LED display for precise temperature control, plus advanced self-modulation that adjusts power to match hot-water demand. It uses durable copper immersion elements and is field-serviceable, making maintenance straightforward. With a flow rate up to 4.4 GPM, this unit is suitable for households that require reliable hot water at multiple fixtures simultaneously. The self-modulating technology helps improve efficiency by reducing energy use when demand is low.
Orbek 18kW Tankless Electric Water Heater
The 18kW Orbek model supplies up to 4.17 GPM of continuous hot water and is designed to serve 2-3 fixtures at once. It requires two 240V/40A breakers, two runs of 8 AWG wiring, and 3/4″ NPT water connections. Like its smaller sibling, it emphasizes quick delivery of hot water within seconds and aims to minimize scale and corrosion through water-electricity separation. This unit is ideal for homes needing higher flow without a bulky tank.
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater
The Rheem RTEX-24 combines robust performance with flexible installation. It requires 3 x 40A double-pole breakers and is best suited for homes with a strong electrical service (200A recommended). The unit provides continuous hot water as needed, though its output is influenced by groundwater temperature and geographic location. An ON/OFF dial and adjustable digital temperature display allow precise control from 80 to 140 degrees Fahrenheit, supporting efficient operation and consistent comfort across multiple fixtures.
EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 is a compact, self-modulating tankless unit rated at 13 kW at 240V. It emphasizes energy efficiency by heating water only when needed, which can reduce electricity usage and space requirements. The unit is notably smaller than traditional tank heaters, making it suitable for wall installations or point-of-use setups. While designed for smaller homes or apartments, its self-regulating technology helps maintain consistent water temperature with less standby heat loss, contributing to overall efficiency.
Buying Guide: Key Purchase Considerations
- Electrical capacity and service: Tankless electric models require adequate electrical service. Check whether your home has enough amperage and available breakers to support the unit, especially for higher-wattage options like 18kW or 24kW models.
- Flow rate needs: Determine your peak hot-water demand by counting the number of fixtures used simultaneously (shower, sink, dishwasher, etc.). Choose a unit that provides sufficient GPM at your desired temperature rise.
- Temperature rise and stability: Consider models with digital thermostats or self-modulating technology to maintain consistent temperatures, especially in varying inlet-water temperatures.
- Installation considerations: Tankless units typically require ventless electrical connections, dedicated circuits, and proper plumbing line sizing. Some compact models suit point-of-use installs, while others are better for whole-home setups.
- Maintenance and serviceability: Look for units with accessible heating elements or field-serviceable components. Copper elements tend to be durable, and units that allow service without full system replacement can reduce maintenance costs.
- Efficiency and energy savings: Self-modulating and demand-based control reduces standby heat loss and can lower electricity usage compared with traditional tank heaters. Compare efficiency ratings and expected annual energy savings.
- Warranty and support: Review manufacturer warranties and local support options. A strong warranty can offset initial installation costs if components require service.
- Space and aesthetics: Tankless systems offer compact footprints and flexible installation positions. If space is a constraint, prioritize small-form designs or point-of-use configurations.
- Water quality considerations: Some models emphasize corrosion resistance and scale reduction. Consider water hardness and potential mineral buildup when selecting heating elements and materials.
- Budget and total cost of ownership: While tankless systems often have higher upfront costs, long-term energy savings can offset them. Factor in electrical upgrades, installation, and potential maintenance when evaluating value.