SioGreen Sio-18 Whole House Tankless Water Heater

Model :
220v, 18 kW, 80 Amps

SioGreen Sio-18 Whole House Tankless Water Heater

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    Flow Rate @ 40°F Temp Rise 3.07 (GPM) @ 107°F Output, Inlet 67°F.

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    Reduce Energy Cost up to 65% compare to any current Electric Tankless Water
    Heater in the Market.

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    Continuous hot water on-demand

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    High heating efficiency (98%)

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    No Metallic. No Corrosion. No Calcium Deposits. Maintenance Free. Superior
    Heating Efficiency

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    Uses lower amperage, maintains higher water flow capacity, integrated into
    various application.

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    Temperature Setting Control

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    Certificate MET(US) – WRAS Certificate – CE Certificate & Patented Technology)

The Infrared Tankless Water Heater – Model Sio 18 is the high-range model for Residential and Commercial use, ideal for large family homes or medium to large businesses, with a capacity of 0.5 to 5.0 gallons per minute. This powerful, efficient hot water heater applies Quartz Infrared heating elements and a tankless design for maximum performance and efficiency.

A traditional hot water heater has metal heating elements that are placed in the tank where the water is stored. Eventually, these metal elements begin to corrode and break down inside the tank, leading to a loss of efficiency, system failure, and possibly even water contaminants like bacteria and algae. SuperGreen’s Infrared Tankless design does not experience these problems, making it up to sixty percent (60%) more efficient and up to twice as long-lasting as many conventional designs. Use the SuperGreen sizing guide to find out which model is ideal for you.

The Infrared Tankless Water Heater – Model Sio 18 can even be used to effectively upgrade an existing traditional unit because it is also designed for HYBRID applications. SuperGreen’s tankless units can be integrated into an existing conventional electric or gas tank hot water heater, providing all the benefits of tankless water heating – energy savings and continuous hot water on-demand. The super-efficient Quartz Infrared heating elements heat the water quickly and then store the hot water in the traditional unit’s tank. This means you never run out hot water. Contact us for more information.


  • Multiple Redundant High Power Quartz Heating Elements
  • Thermostatic Intelligent Fuzzy Logic PID Temperature Controller
  • Fully Modulating Power Control
  • Solid State Relay (SSR)
  • LED Temperature Outlet/Set Display ( °F/ °C setting)
  • 3 Digit LED Flow Indicator (GPM)
  • Compact Design for Space Saving
  • Superior Energy Efficient (98%)
  • Environmental Friendly and Recyclable
  • Continuous Hot Water On-Demand
  • Self Cleaning Design for Maintenance Free Operation


  • Residential/Commercial
  • Electric Tankless Heating
  • Hot Water Recirculation Loop
  • With Storage Tank
  • Radiant Heating
  • Hydronic Heating
  • Solar Heating Backup


  • Overheat Thermal Cut Off Fuses
  • High Limit Temperature Safety Cut Off
  • Outlet Thermocouple Constantly Monitor Temperature and Anti-Scald Protection
  • Residual Leakage Current Detection
  • Circuit Breakers


Voltage supply 220 VAC/50-60Hz
Amperage 80A (8 redundant Far-Infrared Heating elements)
Maximum output power 18 kW
Temperature control range 60°F to 140°F (±1°F increment)
Water connection (Inlet/Outlet) 3/4” NPT
Pressure range 15 psi to 150 psi
Minimum flow rate 0.5 US gal/min
Maximum flow rate 4.0 US gal/min (30GPH)
Dimensions 14” W x 20” H x6” D
Weight 27 pounds
Sio 18 18 kW 220VAC 2 x 40 Amp 200 Amp #8 (2 Sets)

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