Model # AT-900-13

Internet #205515520

ATMOR 13kW/240-Volt 2.25 GPM Electric Tankless Water Heater with Pressure Relief Device, On Demand Water Heater
0857580003064

ATMOR

13kW/240-Volt 2.25 GPM Electric Tankless Water Heater with Pressure Relief Device, On Demand Water Heater

  • Continuous on demand hot water heater, no hot water tank
  • Electric water heater full bathroom solution – sink/shower combo
  • Requires 60A, Single Phase, DP Breaker, 4 AWG Wire, and 240V
$ 135 99
(limit 5 per order)
$159.99

Save $24.00 (15%)

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Product Overview

  • Continuous on demand hot water heater, no hot water tank
  • Electric water heater full bathroom solution – sink/shower combo
  • Requires 60A, Single Phase, DP Breaker, 4 AWG Wire, and 240V
ATMOR 900 series Electric Tankless Water Heaters revolutionize hot water heaters with technology that provides you with unlimited hot water when you need it, without the wait or worry of ever running out. By automatically activating once water flow is sensed and shuts off when it stops, you'll lower your water consumption and eliminating costly water waste. The ATMOR Electric Tankless Instant Water Heater is the eco-friendly, efficient and convenient solution you have been looking for, delivering an endless supply of hot water instantly at the point of use only when you need it. It is suitable for both residential and commercial applications, even in your RV, so you can enjoy a continuous flow of hot water whenever you want. Best of all, unlike a gas water heater, the compact design requires no venting, giving you the flexibility to install anywhere inside your home or garage. The compact footprint of this device can be installed against the wall either under the sink out of sight or near the point of use, where its elegant design blends into your home environment among other appliances. Remember inlet temps vary by location and seasonality. Selecting the right water heater depends on your incoming water temperature, flow rate, and desired output temperature.
  • Perfect point-of-use hot water solution for a full bathroom
  • Unit requires a 240V connection and 60 Amp dedicated, single phase
  • Pole breaker 3 settings: high - 13kW, medium - 8.5kW, low -4.5kW
  • 3 Settings: High 13kW, Medium 8.5kW, Low 4.5kW
  • Includes a pressure relief device
  • Standard 1/2 in. NPT (straight thread) fittings
  • 2 year limited warranty, 7 years free from leakage
  • Instant and endless hot water on demand without the wait or worry of ever running out
  • Save up to 50% on your water heating costs
  • Conserves energy - activates only with water flow at 0.5 GPM
  • Eliminates the wait for hot water and water wastage
  • Ideal for commercial or residential
  • Compact, eco-friendly design, made up of recycled material, installs neatly underneath sink
  • No venting necessary
  • Certified lead free
  • Inner workings (ie canister) of this ATMOR unit is primarily constructed with a commercial grade, heavy duty, heat resistant polymer composition reinforced with a fiber glass compound to complement its durability, stiffness, finish and strength, such thermoplastic materials are increasingly used across the automotive, consumer industrial, medical and energy markets, to enhance product performance and increase consumer safety
  • Note: unit must be professionally installed into electrical supply
  • Reference our guide to confirm if this is the right tankless water heater for your area/needs, to help with this, please see our selection guide below or call our support team at 888.783.6082
  • Unit must be professionally installed into electrical supply



  • Use our buying guide to choose the right tankless water heater for your needs

    Tankless Electric Water Heater

  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Continuous on demand hot water heater, no hot water tank
  • Electric water heater full bathroom solution – sink/shower combo
  • Requires 60A, Single Phase, DP Breaker, 4 AWG Wire, and 240V
Model #: AT-900-13
Internet #: 205515520

ATMOR 900 series Electric Tankless Water Heaters revolutionize hot water heaters with technology that provides you with unlimited hot water when you need it, without the wait or worry of ever running out. By automatically activating once water flow is sensed and shuts off when it stops, you'll lower your water consumption and eliminating costly water waste. The ATMOR Electric Tankless Instant Water Heater is the eco-friendly, efficient and convenient solution you have been looking for, delivering an endless supply of hot water instantly at the point of use only when you need it. It is suitable for both residential and commercial applications, even in your RV, so you can enjoy a continuous flow of hot water whenever you want. Best of all, unlike a gas water heater, the compact design requires no venting, giving you the flexibility to install anywhere inside your home or garage. The compact footprint of this device can be installed against the wall either under the sink out of sight or near the point of use, where its elegant design blends into your home environment among other appliances. Remember inlet temps vary by location and seasonality. Selecting the right water heater depends on your incoming water temperature, flow rate, and desired output temperature.

  • Perfect point-of-use hot water solution for a full bathroom
  • Unit requires a 240V connection and 60 Amp dedicated, single phase
  • Pole breaker 3 settings: high - 13kW, medium - 8.5kW, low -4.5kW
  • 3 Settings: High 13kW, Medium 8.5kW, Low 4.5kW
  • Includes a pressure relief device
  • Standard 1/2 in. NPT (straight thread) fittings
  • 2 year limited warranty, 7 years free from leakage
  • Instant and endless hot water on demand without the wait or worry of ever running out
  • Save up to 50% on your water heating costs
  • Conserves energy - activates only with water flow at 0.5 GPM
  • Eliminates the wait for hot water and water wastage
  • Ideal for commercial or residential
  • Compact, eco-friendly design, made up of recycled material, installs neatly underneath sink
  • No venting necessary
  • Certified lead free
  • Inner workings (ie canister) of this ATMOR unit is primarily constructed with a commercial grade, heavy duty, heat resistant polymer composition reinforced with a fiber glass compound to complement its durability, stiffness, finish and strength, such thermoplastic materials are increasingly used across the automotive, consumer industrial, medical and energy markets, to enhance product performance and increase consumer safety
  • Note: unit must be professionally installed into electrical supply
  • Reference our guide to confirm if this is the right tankless water heater for your area/needs, to help with this, please see our selection guide below or call our support team at 888.783.6082
  • Unit must be professionally installed into electrical supply



  • Use our buying guide to choose the right tankless water heater for your needs

    Tankless Electric Water Heater

  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Ratings (34) (71) (11) (58)
Wattage (watts) 8500 13000 14000 W 24000
Water Heater Features Overheat Protection,Wall Mountable Overheat Protection,Wall Mountable Digital Display,Overheat Protection,Temperature Pressure Relief Valve Overheat Protection,Wall Mountable
Flow Rate @ 45 F Rise (gallons/min) 1.23 2.25 2.3 gal (US)/min 3.6
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Specifications

Dimensions

Product Depth (in.)
3.55
Product Height (in.)
7.29
Product Width (in.)
11.82
Water Connection Size (in.)
0.5

Details

Amperage (amps)
55
Application Type
Residential
Electric Product Type
Residential
Finish Family
White
Flow Rate @ 35 F Rise (gallons/min)
2.8 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
2.25
Flow Rate @ 55 F Rise (gallons/min)
1.67
Flow Rate @ 65 F Rise (gallons/min)
1.22
Fuel Type
Electric
Heat Exchanger Warranty
2 Year
Indoor/Outdoor
Indoor,Outdoor
Maximum Temperature (F)
130
Minimum Activation Rate (gpm)
0.5
Minimum Temperature (F)
65
Product Weight (lb.)
3.8lb
Required Volt Connection
240 volt
Returnable
90-Day
Uniform Energy Factor
0
Water Heater Features
Overheat Protection,Wall Mountable
Wattage (watts)
13000
Wattage (watts)
13000

Warranty / Certifications

Certifications and Listings
1-UL Listed
Labor Warranty
No Warranty
Part Warranty
2 Year

Specifications

Dimensions

Product Depth (in.)
3.55
Product Height (in.)
7.29
Product Width (in.)
11.82
Water Connection Size (in.)
0.5

Details

Amperage (amps)
55
Application Type
Residential
Electric Product Type
Residential
Finish Family
White
Flow Rate @ 35 F Rise (gallons/min)
2.8 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
2.25
Flow Rate @ 55 F Rise (gallons/min)
1.67
Flow Rate @ 65 F Rise (gallons/min)
1.22
Fuel Type
Electric
Heat Exchanger Warranty
2 Year
Indoor/Outdoor
Indoor,Outdoor
Maximum Temperature (F)
130
Minimum Activation Rate (gpm)
0.5
Minimum Temperature (F)
65
Product Weight (lb.)
3.8lb
Required Volt Connection
240 volt
Returnable
90-Day
Uniform Energy Factor
0
Water Heater Features
Overheat Protection,Wall Mountable
Wattage (watts)
13000
Wattage (watts)
13000

Warranty / Certifications

Certifications and Listings
1-UL Listed
Labor Warranty
No Warranty
Part Warranty
2 Year

Questions & Answers

Is this easy to install ? Can a woman with not electricity experience do this ? My water heater is not working .

Asked by: Tatiana123
The level of difficulty will depend on your setup. If you have a 240v wiring or outlet near where you are installing the water heater, it can be as simple as wiring a dryer or stove plug to it. If not, you may have to add a breaker in you electrical panel, run wire possibly conduit to you location. Since you have no electrical experience, I would advise you to hire a plumber.
Answered by: VictorS
Date published: 2018-12-21

can this unit be mounted outside?

can this unit be mounted outside?
Asked by: me
No, the product cannot be mounted outside.
Answered by: CommunityAnswer
Date published: 2018-03-02

Do I need one for each hot water source I have 3

Asked by: Debbie
The whole idea of using these is that you put them next to where you want hot water. They are very cheap and it keeps you from pumping hot water all thru your house. I cut my electric bill buy $170 a month. It was so worth it but they are not free and they take work to install and you have to do it right or they will cost you extra in the end.
Answered by: Tracker
Date published: 2018-05-04

Does anyone have experience using this unit for a 2 bathroom condo in Florida?

Does anyone have experience using this unit for a 2 bathroom condo in Florida?
Asked by: Billy
This unit isn't designed for two bathrooms. I have installed it for a single bath apartment and a single sink salon in SC. In each case, the user had to restrict the water flow slightly in order for it to heat sufficiently. It runs on a 60Amp double-pole breaker, which means using 4AWG wire which is about $7/ft. The thickness of the wire makes it VERY hard to connect inside the heater as you must turn it 90° and force it into the connectors. That being said, I still will use it again for single bath applications, especially where the breaker panel is too full to allow for more breakers.
Answered by: Mckenzieremodeling
Date published: 2018-01-15
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Customer Reviews

13kW/240-Volt 2.25 GPM Electric Tankless Water Heater with Pressure Relief Device, On Demand Water Heater is rated 3.2 out of 5 by 71.
Rated 2 out of 5 by from Required way too large of a service to be practical.... Required way too large of a service to be practical.
Date published: 2019-01-01
Rated 3 out of 5 by from We've installed two of the 13kw heaters in two different locations (1 cabin and 1 Tiny House). T... We've installed two of the 13kw heaters in two different locations (1 cabin and 1 Tiny House). They both finally started working as designed, but there are some quirks that need to be worked with. You need huge wire and a big breaker for these. Both heaters seemed to need some time to "break in" the high temperature protection circuit. At first, neither heater would work with both elements turned on. No mater how much water was pulled through the heater, the over-temperature circuit would shut the heaters completely off after about 15-30 seconds. For both heaters, after a couple of weeks of trying different water flow volumes, the over-temperature circuit seemed to just start working as it should and allowed us to use both heating elements as long as we pulled enough cooling water through the heaters. The Specs. say that the maximum water temperature is 130 degrees. Be aware that this does NOT mean that the heater limits the outgoing water temperature to 130 degrees. It means that if the outgoing temperature exceeds 130 degrees, then the heater completely turns off, giving you cold water. The problem with this is that the temperature of the water coming out of the heater is also dependent on how much water is being pulled through the heater (lower flow means the water is in the heater longer so gets hotter). This is a problem in a shower because if the shower water is too hot, you turn the shower water temperature down, drawing less hot water through the heater, increasing the water temperature in the heater, shutting the heater completely off. You don't know it until you get stone cold water in the shower. For showers, it would be better to use a heater that actually modulates the heater to give a maximum water temperature rather than shutting itself off.
Date published: 2018-11-25
Rated 1 out of 5 by from Not even worth it. We've had this for nearly 6 months, and we walked into a flood zone!!! We opened the face of the tankless heater, and the tube inside was completely split open, and water was just ripping through it. It's also never properly worked. Very hot spurts, to freezing. Would constantly overheat, even if we turned down the temp all the way. Just a waste of money in general. Invest in a better quality brand. Eco-smart has my house and my salon now.
Date published: 2018-10-02
Rated 1 out of 5 by from Very poor product. First unit worked 3 minutes. Had it... Very poor product. First unit worked 3 minutes. Had it replaced after a week. Second unit worked 7minutes and shut itself off and wouldn’t come back on. Will never purchase an Atmore product again. Now going through the hassle of getting a refund, after 3 weeks with no hot water...Very unhappy...
Date published: 2019-02-14
Rated 3 out of 5 by from The heater works fine. The PRD is constantly leaking. I've requested a replacement PRD device. Ho... The heater works fine. The PRD is constantly leaking. I've requested a replacement PRD device. Home Depot does not have spares. Home Depot serviced the order promptly and accurately. There were no instructions as to what to do if the PRD device is not working.
Date published: 2019-02-19
Rated 3 out of 5 by from 3 Star Review Rating provided by a verified purchaser
Date published: 2019-02-06
Rated 4 out of 5 by from 4 Star Review Rating provided by a verified purchaser
Date published: 2019-03-15
Rated 3 out of 5 by from Affordable heater with hidden costs If you have a location in your home that is far away from the water heater and you have to wait a significant amount of time for hot water to begin to flow, one of the Atmor tankless water heaters are your best bet. That is what I attempted to do and I don't even live in a cold climate, just tired of waiting a good minute before hot water begins to reach the faucet. Before selecting this specific unit (the Super 900-13) though, take a look at the power requirements. They are pretty intense. This unit requires 240V and a 55 amp dedicated circuit breaker at the panel. Now unless you are doing a new build out or renovation (I wasn't) it can be costly (it was for me) to get the type of power needed at the device. If I could do it all over again I would use the lower end model that only requires 110v and 30 amp circuit (still a lot of amps!). But all this aside, the unit works well and the water is hot in short order and shuts off once the hot water from the water heater reaches the unit. Be advised - the manual calls for water aerators to be installed on all faucets to keep the water pressure in check and restrict the flow of water.
Date published: 2016-04-26
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