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Availability:
In Stock.
Arrives
Sunday, Aug 23
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Features
- Tankless water heaters provide a continuous Supply of hot water and only heats the water you need, when you need it
- Instant, consistent and endless hot water
- The most advanced, self-modulating technology available, meaning the unit will adjust how much energy needs to be input based on how much hot water is needed
- Compact size saves valuable storage space; Resistant and stylish with digital temperature control in increments of 1F ranging from 80F to 140F
- Before purchase and installation, Please verify that this EEM24018 is the correct size for your hot water needs.Rated Pressure: 25psi minimum; 150psi maximum
Description
Experience the convenience of endless hot water with the Eemax EEM24018 Electric Tankless Water Heater. Designed to heat water on demand, this innovative unit ensures you only use energy when you need it, providing instant and consistent hot water for your home. Featuring advanced self- modulating technology, the EEM24018 automatically adjusts energy input based on your hot water requirements, making it both efficient and eco-friendly. Its compact design not only saves valuable storage space but also adds a touch of modern style with digital temperature control, allowing you to set your desired temperature in precise 1°F increments from 80°F to 140°F.
Brand: Eemax
Power Source: ac_dc
Product Dimensions: 14"W x 17"H
Color: Blue
Wattage: 18 KW
Power Source: ac_dc
Wattage: 18 KW
Voltage: 240 Volts
Maximum Temperature: 140 Degrees Fahrenheit
Heat Output: 18 Kilowatts
Efficiency: 99.8% energy efficient
Maximum Pressure: 150 Pound per Square Inch
Mount Type: Floor
Is Electric: Yes
Item Dimensions W x H: 14"W x 17"H
Color: Blue
Style Name: Indoor Installation
Brand Name: Eemax
Model Number: EEM24018
Manufacturer: Eemax Inc.
Manufacturer Warranty Description: 5 years for leaks and 1 year for parts
UPC: 091654920400
Global Trade Identification Number: 00
Manufacturer Part Number: EEM24018
Included Components: electric tankless water heater unit
Item Type Name: Electric Tankless Water Heater
Material Type: Stainless Steel
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Aug 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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: Indoor Installation
After months of research and debating on the best way to replace my aging Water heater I decided to choose the EEM24018. Couple reasons that I chose the 18 instead of going larger. I have an older Electrical system that made it difficult to find 3 or 4 double pole slots. I went with the 18Kw since it only has two heating elements and only requires two double pole breakers rather than 3 or 4. Was skeptical if it would be enough for my house or not but It works great and meets all my needs (Central North Carolina.) I installed the system myself since I'm knowledgeable in home repair. If you don't feel comfortable dealing with Electric and Plumbing then seek professional help before you buy. Depending on current electric service the Electrical work should cost approximately (150$ Material / +300$ Labor) making this project double the cost to replace a 40gal WH. But if you feel comfortable with the work then you can't beat the cost difference. My cost $290 - EEM24018 $120 - 125' 8/2 Wire (Up to 60' distance from WH location to Electrical Panel) $20 - 2 Double Pole 40A Breakers $20 - 2 new 3/4" WH lines (Not required) Total Cost 450$ - 5 Hours of Labor mostly to run the electric lines. Compared to 400$ and 1 hour of Labor for a 40 Gallon Conventional Water Heater. I have my temp set a 114 and run only Hot water for showers. Plenty of pressure since I have 3/4" Main trunks. Water takes probably 20 seconds to heat up and another 60 seconds to balance itself. Also I have a well with a water tank set around 50 psi, with my old conventional water heater my water temp would fluctuate any time the Water heater took in water or my water tank tripped the well on. This would happen every couple minutes as I have an old mixing valve for my shower and heard about it weekly from the Mrs. This completley solved that issue. I have nothing negative to say about the EEM24018 and will update with any changes as they happen.
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Reviewed in the United States on November 26, 2018 by Brianna Francis
Style: Indoor Installation
My previous EEmax tankless water heater worked for 12+ years so when it was time to replace it I ordered an EEmax tankless water heater again because its easy to install and works great
Reviewed in the United States on August 15, 2025 by miguel correa
Style: Indoor Installation
Exactly like the one it replaced, I hope it last as long or longer than the first one. They work so well. I always have hot water on demand. Of course as long as the power doesn't go off.
Reviewed in the United States on August 25, 2025 by Coretha
Style: Indoor Installation
We purchased this unit in 2018, since installing it's been wonderful. We love not having to wait for hot water and not running out of hot water. Taking a 5 min shower, no problem. Taking a 50 minite shower, no problem. The only down side is if someone uses hot water while showering. Since it's rated for 2.3 gallons per minute, you need to be watchful not to use too many hit faucets at once. Over all great product.. next time we'll get a 5 gallon per minute.
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Reviewed in the United States on October 2, 2022 by Kaye Fryery-Lyytinen
Style: Indoor Installation
So I’ve had this thing packed away in the box because I figure I’d keep the other water heater for a while longer. So I just installed it and Rand the power for it. Five years later I figured it’s time to change it out to the Eemax now. Wrong! It’s not working right! It has H 103 on the display and wont adjust at all. Just stick with that number. I’m starting to lose faith In The idea of going tankless. I’m very disappointed right now and most likely will have to change the water heater back to the old one.
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Reviewed in the United States on June 26, 2025 by Berrian A Hobby IV
Style: Indoor Installation
Works great. I've had for 6 months and no issues. You have to ensure it is installed correctly. You will need 2 double 40 amp fuses dedicated just for this to work. It also helps to plan for maintenance when installing. If you add 2 valves one on the in and one on the out and a main valve to shut off the water coming into heater. You have to flush 2 times annually. I use vinegar or CLR to clean the internal heater coils from hard water. I installed a 3M water filter to help reduce mineral deposits. It seems to work because my first flush was very clean only a few scale pieces came out. I highly recommend planning for inline water filter. I live in Florida and ground water temperature is everything when it comes to tankless water heaters. It's easy to think about. I live in Florida my ground tap water is 65°-75° annually. To heat my water to 115 degrees my water heater has to heat my water 40°. If you live in let's say Michigan and your ground tap water is 36°-46° annually. Your water heater has to heat 70° to get to 115°. You may need to install a water restricted after your water filter to slow the water down to allow the coils to heat the water to desired temperature. Living in Florida I do not require this because my water is warm out of the ground and my water heater has plenty of time to heat it before it goes through the pipe. I have a two story 1800 Sq ft townhouse with 2.5 bathrooms and all cam ne used at the same time both showers and a sink or dishwasher with minimal temperature fluctuation. You may feel a few degree temperature change when all 3 are being used. I have the heater set to 120° and it seems to help alleviate this issue also you don't need all hot on you can use more cold but still have hot water for showers and baths.
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Reviewed in the United States on June 1, 2021 Reviewed in the United States on June 1, 2021 by Army_Soldier
Style: Indoor Installation
This is my second tank less water heater. I have been using it for a few months. It is impressive takes a little longer to get stablized but once you have reached it"s activation point it keeps up with the demand. My old unit was never this efficent, two people could shower at the same time but it took planning. This heater works very well no mater how much demand it receives. I am very pleased so far. I especially like the digital temp setting screen. If you cannot have a gas unit because of aviability this heater this one will do a lot better than a tank type, and save you a lot of money, unless your water cost are extreemyy high. You will use a little more water with this one simply because it is not instant, not far from it but not instant. Now the closer you get it to the use area the better you will like it. I have at least 60 foot runs from the heater to the source, for all but one of my 7 high use areas...
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Reviewed in the United States on October 28, 2018 by Raleigh R. Conquest
Style: Indoor Installation
Installation instructions were easy to follow. Had to upgrade wiring to two double pole 40A breakers with four, 8 gauge wires with ground. Installed two double pole cutoff switches near the heater. Easy to adjust the temp and read the display. 125F gives me a hot shower at the other end of the house, 130F was a little too hot. NE Florida, so inlet temp is generally in the 68-72F range. The heater is located in the laundry and near the kitchen so that short run means faster hot water to the tap. Conversely, the showers and bathrooms are located at the other end of the house so takes a couple of minutes to get up to temp. Future plan is to move this heater to the other end of the house and supply the kitchen and laundry with an under sink tanked. Modern washing machine has self heating so no need to use the tankless as a hot water supply. I would definitely recommend this tankless water heater.
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Reviewed in the United States on September 27, 2018 by William D.