18kW Tankless Water Heater Electric, ORBEK Instant On Demand Hot Water Heater 240V, Up to 4.17 GPM, Supply for 2-3 Fixtures, within 1℉ Stable Temp, ETL Certified, Indoor Installation
Condition: New
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Availability:
In Stock.
Arrives
Wednesday, Jun 3
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Style: 18kW-New Upgrade
Features
- Note: Things to know before buying, Our Orbek tankless water heater electric 18kw requires 2 x 240V/40A two-pole breakers, 2 sets of 8 AWG wires and 3/4" NPT water connections.Please ensure that the total current of the household circuit breaker panel is greater than or equal to 150 amps. Otherwise, it may affect the normal operation of the equipment. Especially if other high-power appliances are also being used in the household circuit.
- Instant Hot Water Supply: Orbek electric tankless water heater 240v can provides up to 4.17 GPM of on demand endless hot water and ensure comfortable hot water for 2-3 points of use simultaneously
- High Energy Efficiency: This on demand hot water heater electric utilizes water-electricity separation to minimize scale and corrosion. It provides endless hot water in just 3 seconds with an impressive efficiency, potentially reducing electricity costs by up to 60% compared to traditional tank-style heaters
- Comprehensve Security Protection: The tankless hot water heater is ETL certified and packed with advanced safety features, including leakage protection, over-temperature protection, dry-heating protection and lighting resistance etc. Each product undergoes rigorous testing before leaving the factory to ensure its safety and normal operation
- Stable Temperature Control: The built-in chip adjusts heating power 20,000 times per second, keeping water temperature stable within 1F for a comfortable shower experience
- LED Digital Display: Our tankless electric water heater features a high-definition screen with soft lighting for easy temperature adjustments between 86F and 140F. It also displays real-time temperature changes
- Easy Install: With a compact size of 17"H x 13.0"L x 3.9"W, our electric hot water heater saves over 50% of space compared to traditional tank water heaters, fitting easily into most corners of your home. We have also made structural improvements to the product to make installation easier
- After-Sale Service: We provide long-term return & exchange services along with professional technical consulting support
Brand: Orbek
Power Source: Hard Wiring Required
Product Dimensions: 3.9"W x 17"H
Special Feature: 24/7 Customer Service and Warranty, ETL Certification, Separation of Water and Electricity, ±1°F Stable Temperature Control, Instant and Endless on Demand Hot Water See more
Color: Moonlight
Power Source: Hard Wiring Required
Special Features: 24/7 Customer Service and Warranty, ETL Certification, Separation of Water and Electricity, ±1°F Stable Temperature Control, Instant and Endless on Demand Hot Water
Wattage: 18 KW
Voltage: 240 Volts
Maximum Temperature: 140 Degrees Fahrenheit
Efficiency: High Efficiency
Mount Type: Wall
Is Electric: Yes
Item Dimensions W x H: 3.9"W x 17"H
Item Weight: 18.3 Pounds
Material Type: Housing material is iron
Brand Name: Orbek
Model Number: ET018
Manufacturer: ORBEK
Manufacturer Warranty Description: At Least One Year Warranty for the Whole Machine
Included Components: Water Heater
Color: Moonlight
Style Name: 18kW-New Upgrade
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jun 3
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: moonlight
Working well so far. Just installed it a week ago. Install was easy because I replaced an old unit that lasted 17 years. (NOT the same model) If this will be a new Install, be prepared for a wiring upgrade!
Reviewed in the United States on December 11, 2025 by DEBRA TIBERIO
Color: moonlight
It's not like a 40 gallon HW tank, but it's not advertised as such. Perfect for a family of 2. Also works well for larger families as long as you're not doing laundry and taking a shower at the same time. Excellent customer service!
Reviewed in the United States on February 5, 2026 by Rich Sterling
Color: moonlight
DON’T BUY-Received the water heater, installed it the same day. Digital screen never turned on after it was installed. The power to the unit was tested, everything had power but the digital screen so the unit wouldn’t even turn on. Previously ran another water heater on the same lines, water and electric, and it worked great. Checked all the specs to make sure it all matched what we had and had adequate power. Company that sold the product cannot even help, you have to contact Amazon and Amazon has no solution other than refund and return. I am really disappointed, I haven’t had hot water for a while so I was really upset whenever everything was installed correctly and it doesn’t even turn on. Amazon will start to process return once the item is picked up, then have to wait 5-7 business days for the refund to hit. I have to wait for the refund to process to buy another one. Extremely disappointed in this, in this economy it is hard to make big purchases so when I have to wait for my money back to buy a replacement it is really frustrating. I even looked through reviews and there were only a few bad ones so I thought it would be okay but I ended up with the same issue some other people have had. Do not buy.
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Reviewed in the United States on December 3, 2025 by Alayna
Let me start by saying I bought a different brand prior to this one, it was total garbage! THIS one is amazing! Straight forward wiring, water plumbing is at the bottom not the top in the event you get a leak it won’t ruin the electrical boards. Smaller, lighter, simple to operate, and man oh man, the water is HOT and plentiful! Stop looking at the other brands, buy this one! You’ll thank me later.
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Reviewed in the United States on April 25, 2025 by Biker bro
Color: moonlight
GPM (gallons per minute) could be a bit higher, this unit has a 4+ GPM rating. Functionally this is a great unit for a single person or a specific purpose. Keep in mind that when you turn the hot water faucet on the existing water in the line between the heater and the faucet must be pushed thru first, then you have endless and constant hot water. In my case it takes 6-10 seconds for the water to become hot. overall, a great unit.
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Reviewed in the United States on April 3, 2026 by Steve Howard
The media could not be loaded. 1200’ 3 bedroom condo 2 people in Myrtle Beach . Replacing a 50 gallon tank electric water heater . Only working for a week , so far perfectly . Will stay in touch .
Reviewed in the United States on April 17, 2026 by Alan M Jones
Color: moonlight
It was super easy to install. Water is nice and hot for hours. You can’t beat the price.
Reviewed in the United States on November 8, 2025 by 99atl
Color: moonlight
I wish I would have went this way sooner. I will say if the water pressure is too high (gpm) it doesn’t stay super hot. Wish I would’ve got bigger option
Reviewed in the United States on January 17, 2026 by Nikki