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Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
Airthereal Electric Tankless Water Heater 27kW, 240 Volts, Endless On-Demand Hot Water, Self Modulates to Save Energy Use, Small Enough to Install Anywhere, Evening Tide series
27 kW Electric Tankless Water Heater

$279.99 $279.99

▶ Which electric tankless water heater size is right for you? Learn More.

▶ How to install a water heater? Learn More.

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The Airthereal Electric Tankless water heater comes in 5 different sizes to tackle your biggest hot water needs.
The size is 90% smaller than a traditional water heater and since you don’t have to store the hot water, you can save up to 50% on your water heating utility bill.

A sleek tankless water heater mounted on a wall, providing on-demand hot water.
What Is a Tankless Water Heater?
A tankless water heater heats up water on demand instead of storing heated water in a storage tank. Due to its short heating time, tankless water heaters are perfect for cooking areas, additional bathrooms, or any place where water needs to be used at any time. Also, because of its rapid heating and small size, our tankless water heaters are 90% smaller than a traditional water heater.
A sleek tankless water heater mounted on a wall, providing on-demand hot water. A sleek tankless water heater mounted on a wall, providing on-demand hot water.
What Is a Tankless Water Heater?
A tankless water heater heats up water on demand instead of storing heated water in a storage tank. Due to its short heating time, tankless water heaters are perfect for cooking areas, additional bathrooms, or any place where water needs to be used at any time. Also, because of its rapid heating and small size, our tankless water heaters are 90% smaller than a traditional water heater.
How are “Traditional” Tank Storage Water Heaters Different?
Airthereal
Tankless Water Heater
Size
Less space to install
Power Supply
8kW-27kW
Performance
Unlimited hot water
Energy Use
Only heats water on demand
Installation
Can be installed as long as the cold and hot water pipe channels are arranged in advance.
Cleaning & Maintenance
Non-scaling, so no special maintenance is required.
Airthereal
Tank Water Heater
Size
Need quite a bit of room to install
Power Supply
1.5kW-3kW
Performance
Only holds a set amount of hot water
Energy Use
Holds heated water all-day
Installation
Needs to be installed on the load-bearing wall.
Cleaning & Maintenance
Must flush tank twice a year to remove sediment and mineral scale.
Endless Hot Water
Compact Size
Saves Money
Safe to Use
Airthereal
Endless, on-demand hot water
Endless, on-demand hot water
Provide endless hot water on demand with no preheating or sudden temperature fluctuations.
Airthereal
Endless, on-demand hot water
Provide endless hot water on demand with no preheating or sudden temperature fluctuations.
Save 50% on water heating costs
The self-modulating temperature technology only uses energy to heat up water while you are using it.
Airthereal Airthereal
Safe Hot Water Supply
High Temperature Protection
Dry Heating Protection
Electrical Discharge Protection
Corrosion-Proof Parts
An upgraded LED control panel for a water heating system displaying various temperatures, modes, and water flow information. An upgraded LED control panel for a water heating system displaying various temperatures, modes, and water flow information.
Upgraded LED Control Panel
Inlet water temperature/ Power consumption
Inlet water temperature
Power consumption
Water flow
Check your unit capacity
Match your location color on the map to the corresponding chart below to determine unit capacity. Airthereal Electric Tankless Water Heater 27kW, set the outlet temp. 108°F:
STEP 1
Determine your average inlet water temperature by finding your location on the map and noting the color.
A color-coded temperature map of the United States, including Alaska and Hawaii, indicating varying climate zones ranging from 42°F to 77°F. A color-coded temperature map of the United States, including Alaska and Hawaii, indicating varying climate zones ranging from 42°F to 77°F.
STEP 2
Determine how many applications your tankless water heater can run simultaneously by matching your color to the table above.
Airthereal
Airthereal
Airthereal
Airthereal
STEP 3
Check that you can meet the installation specifications and requirements for the model of tankless heater you selected.
Product Requires:
  • 3x 40A Double Pole Circuit Breaker
  • 3x 8AWG/2 Wires
Airthereal
Airthereal
Airthereal
Airthereal
Airthereal
Airthereal
Specification

Model

EVT-8K

EVT-9K

EVT-14K

EVT-18K

EVT-27K

Voltage

240 V

240 V

240 V

240 V

240 V

Power

8 KW

9 KW

14 KW

18 KW

27 KW

Min. Required Circuit Breaker Size

40 AMP

40 AMP

60 AMP

2 x 40 AMP

3 x 40 AMP

Max. Amperage

33.3 A

37.5 A

58 A

75 A

113 A

Recommended Wire Size

8 AWG

8 AWG

6 AWG

2 x (8AWG/2)

3 x (8AWG/2)

Min. Water Flow

0.475 GPM / 1.8 L/min

0.475 GPM / 1.8 L/min

0.475 GPM / 1.8 L/min

0.475 GPM / 1.8 L/min

0.475 GPM / 1.8 L/min

Safe Operating Pressure

7.25 PSI - 108.78 PSI

7.25 PSI - 108.78 PSI

7.25 PSI - 108.78 PSI

7.25 PSI - 108.78 PSI

7.25 PSI - 108.78 PSI

Water Connections

½’’ NPT

½’’ NPT

½’’ NPT

¾’’ NPT

¾’’ NPT

Installation

Wall-Mounted

Wall-Mounted

Wall-Mounted

Wall-Mounted

Wall-Mounted

Temperature Setting

Digital Panel

Digital Panel

Digital Panel

Digital Panel

Digital Panel

Dimensions (LxWxH)

13.1 x 8.1 x 2.6

16.1 x 9.9 x 2.6

15.9 x 11.1 x 2.9

17.3 x 12.2 x 3.4

17.3 x 12.2 x 3.4

Weight

6.6 lbs

8.8 lbs

12.8 lbs

16.1 lbs

19.2 lbs
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