Best Commercial Electric Tankless Water Heaters for Restaurants
Choosing a reliable electric tankless water heater is essential for any restaurant’s hot water needs—dishwashing, sanitation, and food prep all require consistent flow and temperature. The following five models offer high flow rates, robust duty cycles, and compact install footprints suitable for commercial kitchens. The table below highlights key specs to help compare capacity, power requirements, and potential GPM performance in typical restaurant settings.
| Product | Brand | Model Power | Approx. GPM | Notes |
|---|---|---|---|---|
| WINTEMP 36kW Tankless Electric Water Heater | WINTEMP | 36 kW | Up to 8.7 | High demand; multiple outlets |
| ECOTOUCH ECO270S 27kW | ECOTOUCH | 27 kW | Up to 5.5 | WiFi control; self-modulating |
| ECOTOUCH ECO270B 27kW | ECOTOUCH | 27 kW | Up to 5.5 | Self-modulating; efficiency features |
| Rheem 18kW 240V Tankless | Rheem | 18 kW | Up to 4.4 | Digital thermostat; self-modulation |
| Orbek 18kW Tankless 240V | Orbek | 18 kW | Up to 4.17 | Two-pole breakers; efficient |
Note: Always verify electrical service capacity and panel space with a licensed electrician before purchasing a high-wattage unit for commercial use. For restaurant environments, it’s common to install multiple units or a high-capacity system with dedicated circuits to meet peak demand and keep water temps stable during busy service periods.
WINTEMP 36kW Tankless Electric Water Heater
The WINTEMP 36kW model is designed for high-demand scenarios. It requires four 40-amp double-pole breakers and four 8/2 AWG cables, with a recommended 300-amp service. It delivers up to 8.7 GPM, with real-time temperature control and energy-saving self-regulation. This unit is suitable for commercial kitchens that rely on steady hot water across multiple stations, such as dishwashing and prep sinks, without a noticeable drop in temperature during peak times.
ECOTOUCH ECO270S 27kW On-Demand Water Heater
ECOTOUCH ECO270S provides 125℉+ instant hot water with up to 5.5 GPM. It draws up to 113A and should be installed on a 200A service with appropriate circuit breakers. Features include self-modulating power, enhanced safety protections, and a user-friendly control panel. Its strength in restaurant settings lies in efficient energy use and reliable hot water delivery for sinks, pot washing, and handwashing stations when high flow is required.
WINTEMP 27kW On-Demand Tankless Water Heater
The 27kW WINTEMP model is optimized for smaller restaurant setups or sections with fewer point-of-use requirements. It typically requires three 40-amp two-pole breakers and a 250A service recommendation. With up to 6.5 GPM, it suits multiple sinks or a dishwashing station, delivering stable temperatures through self-regulating power input and real-time adjustments.
Rheem 18kW 240V Tankless Electric Water Heater
Rheem’s 18kW model combines an external digital thermostat with LED display and self-modulating capabilities to match hot-water demand. With two heating elements made of durable copper, it supports up to 4.4 GPM and is field-serviceable, making it practical for restaurants needing dependable hot water across multiple sinks or a small kitchen station. This unit balances initial install cost with reliable mid-range performance.
Rheem RTEX-24 24kW Electric Tankless Water Heater
The Rheem RTEX-24 uses a 24 kW rating and requires three 40-amp breakers, with a recommended 200-amp service. It offers continuous hot water with a dial-and-digital temperature display that allows precise control from 80-140 degrees Fahrenheit. This model is suitable for mid-sized restaurant applications where multiple fixtures require consistent hot water, such as handwashing stations and utensil sinks.
Buying Guide: Key Purchase Considerations for Restaurant Environments
When choosing a commercial electric tankless heater for a restaurant, consider these factors:
- Flow demands: Restaurants often require simultaneous hot water at multiple points. Calculate peak GPM needs for sinks, dishwashers, and handwashing stations to select a unit or a multi-unit system that meets or exceeds demand.
- Electrical service: High-wiew units may demand 200–300+ amp service. Verify panel space, wire gauge, and breaker availability with a licensed electrician before purchasing.
- Temperature stability: Self-modulating models help maintain consistent temperatures under varying water flow, reducing the risk of scalding or cold water bursts during busy periods.
- Energy efficiency: While initial cost is a factor, self-modulating and high-efficiency units can save electricity over time, especially in kitchens with frequent hot-water use.
- Maintenance and serviceability: Look for units with accessible heating elements and field-serviceable components to minimize downtime in a commercial setting.
- Installation footprint: Space in kitchens is often limited. Compact designs or multi-unit configurations can fit better without compromising performance.
- Warranty and support: Check manufacturer warranties and the availability of local service technicians to ensure prompt support if issues arise.
In summary, for restaurant environments, the most robust options in this selection include high-capacity WINTEMP and ECOTOUCH models for larger demand, complemented by solid mid-range Rheem and Orbek units for flexible installation across different kitchen zones. The right choice will depend on peak flow, available electrical service, and the desired balance between initial cost and long-term operating expenses.