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AIRTHEREAL

Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 2 Showers, Evening Tide series

    • Based on 742 reviews
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Nov 23
Order within 12 hours and 47 minutes
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Model: EVT-18K


Features

  • Endless Hot Water: Imagine you are the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. Too bad you dont have an Airthereal Electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank.
  • Save Space: That water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank.
  • Save Energy: Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50% on water heating energy compared to a typical tank water heater.
  • Important Note: In order to install 18kW Electric Tankless Water Heater it requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size and a set of 2 x (8AWG/2) wires. Please check to confirm that your breaker panel meet these specifications.
  • Safe To Use: With high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe, on-demand hot water to use on your schedule. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion.

Brand: AIRTHEREAL


Product Dimensions: 12.25"W x 17.25"H


Special Feature: Dry Combustion Protection, Integrated Error Code Indicator, Overheat Protection, LED Display


Color: Black


Wattage: 18000 watts


Brand: ‎AIRTHEREAL


Product Dimensions: ‎12.25"W x 17.25"H


Special Feature: ‎Dry Combustion Protection, Integrated Error Code Indicator, Overheat Protection, LED Display


Color: ‎Black


Wattage: ‎18000 watts


Voltage: ‎240 Volts


Heat Output: ‎18 Kilowatts


Efficiency: ‎High (exact value not provided)


Style: ‎Indoor Installation


Mounting Type: ‎Wall


Manufacturer: ‎Airthereal


UPC: ‎816621023836


Part Number: ‎EVT-18K


Item Weight: ‎19.16 pounds


Country of Origin: ‎China


Item model number: ‎EVT-18K


Size: ‎18kW


Installation Method: ‎Wall-Mounted


Special Features: ‎Dry Combustion Protection, Integrated Error Code Indicator, Overheat Protection, LED Display


Included Components: ‎Electric Tankless Water Heater 18kW


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: September 13, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Crazy deal at $229
Model: EVT-18K
Bought this on sale to replace a dead Bosch Powerstar (expensive new, no current support). Very easy to install, performs much better than the 16kw Bosch. No issue with a hot shower (its in a guest cabin, so just 2 sinks, one shower). Time will tell as to durability. As others have noted, mount it somewhere accessible (closet for me) as if power is interrupted it goes into standby mode when power comes back. You just have to touch the on button, but if it were in a crawlspace that wouldn't be helpful. Unit is briefcase sized, so should be easy to fit anywhere. ... show more
Reviewed in the United States on February 2, 2024 by Gregory F Lepore
    • Seems like a quality product
Model: EVT-8K
I bought this as my conventional hot water heater went bad . I chose this unit , because if offered the information to be able to choose the right unit for where I lived and for my use . I am satisfied with the purchase , it provides endless adequate hot water , for my entire house . Granted it takes a while to get hot water at the kitchen sink , but that is like a 40 ft run , and probably not designed for that , but the conventional tank took even longer . The only thing is I wish I would have paid closer attention to is the amperage draw and the wiring requirements , so I could have had the necessary material on hand . but that is my fault .This unit does draw about 33 amps and requires 8 ga stranded wire , and a 40 amp breaker . So that did add about $100 to the install . Having only 100 amp service , I will have to pay attention to what I have going . So far no trouble . I did originally hook it up too the 12 /2 wire that the old heater was connected to , but it did get warm , and was afraid that if I got a leak after the heater there would be a fire risk so hooked it up with the required wire and breaker . I am satisfied with this purchase , Haven't had it long enough to realize if there will actually be any energy savings , I am skeptical , though with the wattage and amp draw , but we'll see , I expect it to be a wash . ... show more
Reviewed in the United States on July 21, 2023 by Robert Simpkins
    • Requires manual restart after every power flicker or outage
Model: EVT-18K
As I say in all of my reviews, each product starts with 3 stars. Why? Because 3 means it met expectations, no more and no less. I add or remove stars from there based on whether I was impressed or disappointed, and on any interaction with manufacturer (not Amazon) customer service. This unit gets 1 star since it does not work as expected, nor was customer service helpful when I reached out. Yes, it is a tankless water heater and it does in fact heat your water to (as far as I can tell) the appropriate temperature. Installation was no easier or harder than other units I've installed. The issue is that it becomes inactive with any power interruption at all, whether it's an outage or even a flicker of lights. In order to get it to work again, I have to get into the crawlspace and manually press the power button; otherwise, it won't heat water. To be clear, it doesn't get fully reset - it remembers settings such as the target water temperature - it simply remains in "Standby" mode until the power button is touched. Also to be clear, while this happens with full power outages (no power) and even the kind of flickers that happen during storms or high wind or just randomly. I'm talking the kind of power blips that don't even reset the microwave or range clocks because they're so fast and minor; they do, however, cause this unit to go into permanent standby. While made more frustrating since this unit is in my crawlspace - yours might be in a closet or garage that is much easier to access - I only reduced the rating by 1 star for this. I have a 10-year old 27kW EcoSmart (since purchased by Rheem) that cost less then than this 18kW Airthereal unit does now and it doesn't have such a ridiculous design flaw. It just works. This brings me to the second star I removed and the reason for a 1-star rating: customer service. I contacted Airthereal customer service about this issue almost 2 weeks before the 30-day Amazon return window closed and they drew out their responses so long that the 30 days passed, meaning I couldn't return it. Admittedly, I could have disconnected it at any point and returned without waiting for a response from Airthereal, but I was hoping that such obviously unintentional behavior would be recognized as a functional defect that they would address with an updated control board or something, but no. I was informed that the customer service rep "consulted" with their engineering team and that the unit is functioning as designed. Just to be completely sure, I ordered a second unit 5 months after the first and tested to see if my original was in fact defective or if Airthereal had made improvements to the design. It same issue exists: any power interruption, no matter how small, causes the unit to be stuck in standby mode until the power button is touched to reset it. ... show more
Reviewed in the United States on April 23, 2024 by avgbmb
    • Works well
Model: EVT-18K
I followed all instructions on installation. Unit powers on initially, but stays in standby mode. I opened multiple hot water faucets (individually and then together). Nothing happens. Still in standby and no error codes. Double checked electrical and plumbing connections. It’s past the return window, so that’s a few hundred dollars down the drain. I did reach out to Airthereal for help and will update this review if they respond and help solve the issue. Update: apparently whoever hooked up the previous water tank got the hot/cold lines mixed up. Switched them and the unit started working. My only complaint is that when running a bath, I can’t open the line completely otherwise it’s too high of a flow for this heater. I was under the impression that if it can handle two showers at the same time (18k), then it should be able to handle one bath. Otherwise this is definitely an upgrade from the old water heater tank. ... show more
Reviewed in the United States on February 16, 2024 by Erin_M

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