Which Best Commercial Electric Tankless Water Heater is the best? (2024 Top Reviews)

• BEST OVERALL: Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water 
• BEST BRAND: EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
• BEST BUDGET: Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White
• BEST QUALITY: Sio Green SIO18-220v/80A/18kW -Infrared Electric Tankless Water Heater
• TOP RATED:  GARLAT Boccherini 110V Electric Instant Hot Water Shower Heater

1. BEST OVERALL: Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water 

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• CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
• SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
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A German brand that produces the most reliable tankless electric water heaters. This guarantees a long service life, even in commercial applications. Although its specifications are not the best in its class, its reliability, good service support, and good reputation make the Stibel an excellent choice for commercial use. With a flow rate of 4.5 GPM, this best commercial electric tankless water heater can easily handle the hot water needs of a three-compartment sink or several showers. I recommend it if you are looking for a commercial tankless water heater with lower consumption.

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• Best Electric Tankless Water Heater For Cold Climates
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2. BEST BRAND: EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

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• Endless On-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
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The Ecosmart ECO 11 can provide hot water at 3 GPM in hot climates. This is equivalent to heating several sinks or showers and sinks at the same time. If the incoming water temperature is cold, 1.5-2.5 GPM of hot water can be provided at the sink or shower. This best commercial electric tankless water heater is inexpensive, easy to install, and meets your installation needs anywhere. You only need space for a 60A circuit breaker in the service panel. With an efficiency of 99.8%, hot water never runs out. So it is much better than a small tank water heater. Overall, this is a great option if you're looking for a commercial tankless water heater.

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3. BEST BUDGET: Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White

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• Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
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With a maximum capacity of 6.5 GPM, you can easily run multiple showers and fixtures if you live in an area with warm groundwater. Even if you live in a cold water area, at least 2.7 GPM output is better than a regular electric tankless heater. This heater also has a self-regulating flow sensor. That is, it detects the amount of hot water needed and uses the minimum amount of electricity needed for heating. Combined with an excellent 99.8% energy efficiency, this best commercial electric tankless water heater saves much money in energy costs compared to other electric tankless heaters.

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4. BEST QUALITY: Sio Green SIO18-220v/80A/18kW -Infrared Electric Tankless Water Heater

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• Energy efficiency
• Temperature Control
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Sio18 v2 infrared requires no annual maintenance. Infrared heating technology (SIO patent) uses a metal coil to heat the water, so there is no metal to corrode the water. You don't have to worry about hiring a plumber to clean your stove or buying a descaling kit to clean it yourself. The absence of corroded metal in the heater also means that healthier water is available and doesn't incur high energy costs because the heater isn't running at full capacity.

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5. TOP RATED:  GARLAT Boccherini 110V Electric Instant Hot Water Shower Heater

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• Brand GARLAT
• Material Stainless Steel
• Setting Type Rain
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The 110v WUPYI Tankless has a temperature range of 131 to 158F and is rated at 1500 watts. A variety of mounting options make it easy to install, and its clean white exterior looks sharp in any setting. This best commercial tankless electric water heater uses a high-efficiency, low-wattage heating tube to heat water and automatically shuts off when it reaches a set temperature to save energy.

OTHER CHOICES:

BEST CHOICE (ABOUT $̀́500) iHeat Tankless AHS27-D 240V 112.5A 27KW Stainless Steel Enclosure 3/4" MIP 16" by 17" by 3.5" Electric Water Heater

BEST CHOICE ($500 - $600): GE APPLIANCES 24 kW 240v Whole Home Tankless Water Heater

BEST CHOICE (600 - $̀́700) Eemax EEM24027 Electric Tankless Water Heater

BEST CHOICE (ABOUT $̀́700) Eemax Thermostatic Multi Lav Electric Tankless Water Heater

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