Best 13kw Tankless Water Heater Options for on-Demand Hot Water
Discover top 13kW tankless electric water heaters that deliver on-demand hot water while saving space and energy. This guide highlights five reliable models that fit homes of various sizes and installation needs. Each option features self-modulating power, digital controls, and compact designs suitable for point-of-use or wall mounting. Use the buying guide below to compare performance, safety features, and installation requirements so you can choose a unit that meets your hot water needs without unnecessary energy waste.
| Product | Brand | Key Benefit | Typical Use |
|---|---|---|---|
| EcoSmart ECO 11 | EcoSmart Store | Compact, energy-efficient, 54 A draw | Single-point or small bathroom |
| Rheem RTEX-13 | Rheem Store | External digital control, durable heating elements | Medium flow, multiple fixtures |
| 13kW Tankless Electric (WINTEMP) | WINTEMP Store | Stable temperature, high self-regulation | Under-sink or bathroom vanity |
| Electrolux Electric Tank Water Heater (8 gal) | Electrolux Store | Leak prevention, safety features | Point-of-use, small loads |
| Midea 13KW Tankless | Midea Store | Smart controls, app-enabled | Household with smart needs |
EcoSmart ECO 11 Electric Tankless Water Heater
The EcoSmart ECO 11 offers 13 kW at 240 volts with patented self-modulating technology. It aims to deliver endless hot water while minimizing energy use by adjusting heat output to the flow rate and incoming water temperature. The unit is compact—about 11.5 x 8 x 3.75 inches—and can be wall-mounted or placed at the point of use. Its 54-amp draw is typical for residential 240V circuits and contributes to significant space savings compared with traditional tanks. Safety and efficiency are supported by continuous temperature monitoring and tight control of flow rates.
Performance is optimized to maintain water temperature within one degree of the target setting. The ECO 11 is 99% thermal energy efficient and is designed to heat water only when needed, reducing standby losses. Ideal scenarios include single-user applications, powder rooms, or under-sink installations where space is at a premium. For households with higher simultaneous demand, multiple units or higher-capacity models may be considered.
Rheem 240V Heating Chamber RTEX-13
Rheem’s RTEX-13 model provides a compact, wall-mountable electric tankless solution with external adjustable digital thermostatic control and an LED display. Its self-modulating power control helps match heat output to demand, reducing energy use. The unit features durable copper immersion two heating elements and straightforward installation with 1/2 NPT adapters and side water connections. This makes it a versatile option for bathrooms or kitchens where space is limited and reliable temperature control is essential.
Key installation considerations include ensuring adequate electrical capacity and proper venting for electric units in some configurations. The customer-friendly features, like field-serviceable components and precise ±1 degree temperature accuracy, support consistent performance for daily hot water needs. It’s well-suited for households that require dependable hot water at a moderate flow rate without the bulk of a traditional tank.
13kW Tankless Water Heater Electric 240V (WINTEMP)
The WINTEMP 13kW unit is designed for steady, on-demand hot water with a maximum output of 3.1 gallons per minute. It is rated 240 volts and supports up to 57 amps, requiring a 60-amp dedicated circuit and 6 AWG wiring with grounding. The device has a compact footprint and an intuitive digital display. It automatically adjusts energy use based on incoming water temperature and flow, maintaining a stable temperature for multiple use scenarios within a home, such as a bathroom faucet and sink simultaneously.
Installation considerations include circuit capacity, proper breaker sizing, and ensuring compatibility with existing plumbing. The model emphasizes continuous hot water availability and minimizes temperature fluctuations, helping to avoid cold water surprises during peak usage. It suits homes where multiple quick hot water draws occur in succession and space constraints demand a point-of-use approach.
Electrolux Electric Tank Water Heater, 8 Gallon (Point of Use)
The Electrolux 8-gallon electric tank water heater is designed for point-of-use applications, delivering hot water where it’s needed most. It emphasizes safety and reliability with a thick-walled enamel tank and robust protection against leaks, backed by a 6-year tank warranty and a 2-year full warranty. CSA and UL certifications reflect compliance with North American standards, and the unit includes a fireproof cover and a TP valve for enhanced safety.
With a compact profile and enhanced safety features, this model supports high-value tasks at kitchens, sinks, or small bathrooms without relying on a full-home system. It is particularly suitable for households needing quick hot water at a dedicated fixture or where a traditional tank would be impractical due to space or renovation constraints.
Midea 13KW Tankless Water Heater (Wi-Fi & App Control)
The Midea 13KW tankless heater brings smart features to a compact 240V unit. It includes an upgraded 18kW smart heating system for quick on-demand hot water and seamless temperature control. The product emphasizes smart app control, allowing users to adjust temperatures remotely and monitor usage. A clear digital display and touch controls simplify operation, with real-time status updates providing visibility into current performance and energy consumption.
Key considerations include ensuring compatibility with your electrical panel and wiring, plus assessing the maximum flow rate your household will require. The app integration supports households seeking automation and remote monitoring while maintaining reliable hot water delivery for everyday tasks such as showers, dishwashing, and laundry.
Buying Guide
- Flow rate and hot water needs: 13kW heaters typically support modest simultaneous demand. Consider your shower, faucet, and appliance usage to determine whether a single unit suffices or if multiple units are needed.
- Electrical capacity: Check circuit amperage and wiring requirements. Many 13kW models require dedicated 40–60 amp circuits and appropriate wire gauge. Consult a licensed electrician to confirm panel capacity and safe installation.
- Temperature control and stability: Self-modulating or digital thermostats help maintain a consistent output. Look for units with ±1–2 degrees temperature accuracy for reliable performance.
- Space and installation location: Tankless units are valued for their compact footprint and wall-mount capability. Ensure mounting surface and clearances meet manufacturer specs and local codes.
- Durability and warranty: Enamel-coated tanks, copper elements, and safety features (TP valve, CSA/UL certification) contribute to long-term reliability. Compare tank and component warranties to gauge total protection.
- Smart features and remote control: Some models offer Wi-Fi connectivity, apps, or programmable presets. These can add convenience and energy management but ensure compatibility with existing home networks.
- Safety and code compliance: Verify certifications, fireproof casings, leak prevention features, and proper venting or electrical isolation as required by local regulations.
- Water quality and temperature considerations: Hard water can affect mineral buildup. Some models perform better with certain water chemistries; consider filtration or maintenance plans if your water is hard or highly mineralized.
- Cost vs. benefit: While prices are not listed here, evaluate installation costs, potential energy savings, and lifespans. A slightly higher upfront cost may pay off through lower operating costs over time.
- Future needs: If you anticipate expanding hot water demand (additional bathrooms or appliances), plan for a configuration that scales, possibly with multiple units or higher-capacity models.