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Atmor AT90008

AT900-08 Point-of-Use Tankless Electric Instant Water Heater, 8.5 kW / 240V
★★★★★ ★★★★★

AT900-08 Point-of-Use Tankless Electric Instant Water Heater, 8.5 kW / 240V


Items that are currently in-transit to our warehouse, are currently in-stock at a drop-ship vendor’s, or manufacturer's warehouse will be marked as "Available". These products will ship once your order is processed (usually within 24-48 business hours). For any exceptions to this timeframe, an ETA (Estimated Time of Arrival) for your order will be emailed with accurate shipping dates in order to ensure that you are always updated and informed as to when your order will arrive at its final destination.

Quick Specs: View More

  • Width: 11.82"
  • Height: 7.29"
  • Depth: 3.55"

Enter zip code for delivery ETA and promotions:


The Atmor Tankless Electric Instant Water Heater is the eco-friendly, efficient and convenient solution you have been looking for – delivering to you an endless supply of hot water instantaneously at the point of use only when you need it. It is suitable for residential and commercial applications, and even in your RV. Rest your mind at ease and enjoy the continuous flow of hot water whenever you want. This compact 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 well into your home environment among other appliances. Available at AppliancesConnection


2-point-of-use connection
Designed to supply hot water for 2 point-ofuse spots: shower + sink or sink +sink. Hidden

4 temperature level
Varies according to season and flow intensity.

Basic electric requirements

  • For 5kW unit- single phase 40 Amper electric board
  • For 7kW unit- dual phase 2*25 Amper electric board

Instantaneous unlimited hot water supply
The unit supplies instant unlimited hot water until unit is turned off

Up to 80% energy saving
Energy is activated only at shower duration and unnecessary water are not heated

Water saving

  • Instant hot water upon demand!!!!
  • No water is spent while waiting for hot water to arrive from electric boiler

Saving device for maximum efficiency  included
A device connecting to outlet designed to increase heater efficiency is included

Additional Features:

  • On demand hot water
  • Consumes less energy
  • Space saver
  • Wall mountable
  • Minimum activation rate: GPM 0.5
  • Equipped with overheat protection


Fuel Type: Electric
Usage: Residential/Commercial
Capacity (Gallons): 0.11
Tankless: Yes
Gallons Per Minute (Minimum/Maximum): 0.5 - 3.96
Model: 900
Power rating: 8.5kW
Amps: 36A
Power supply: 1/2/3-N-PE-220VAC
(Hot water (L/min) Maximum at Δt=25°c: 2L/min(3.5Kw)/ 6.9L/min(12Kw)
Rated pressure: 0.3-7 bar
Element type: Tubular element
Temperature setting range: 30-55°c
Width: 11.82"
Depth: 3.55"
Height: 7.29"
Master carton quantity: 10
Water connections: ½” BSP
Protection class: IP24
Voltage: 240 Volts
Wall Mountable: Yes
Watts: 8500 W
  • 8,500 WATTS
  • 3 Settings: 3.8 kW, Medium – 4.7 kW, and High – 8.5 kW
  • Shower/Sink - warm climate / Double sink – moderate/cold climate (See Sizing Guide)
  • Requires 6 AWG wire, 240V connection and a 40A dedicated breaker
  • Safety Certifications: UL Listed
Maximum Efficiency with Saving Device

Maximum Efficiency with Saving Device

Includes a device connecting to outlet designed to increase heater efficiency.

4 Temperature Level

4 Temperature Level

Varies according to season and flow intensity.

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Overall Rating ☆☆☆☆☆ ★★★★★ 5.0
Ease of Use 5.0
Meet Expectations 5.0
Bang for Your Buck 5.0
Average rating out of 1 reviews

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Customer Reviews

 from New York,NY
Overall Rating: ☆☆☆☆☆ ★★★★★ 5
Ease of Use: 5
Meet Expectations: 5
Bang for Your Buck: 5

Recommended Product:

The water heater is very compact and has a good size to it. During the installation, I found it to be quick and easy. There was no problem with it and worked perfectly.

Was this helpful? 👍 1 👎 0

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  • Brand:Atmor
  • SKU:AT90008
  • Stock Id:386455
  • Product Number:AT90008


  • Fuel Type:Electric
  • Capacity (Gallons):0.11
  • Tankless:Yes
  • Gallons Per Minute:0.5


  • Width:11.82"
  • Depth:3.55"
  • Height:7.29"

    Technical Details

  • Energy Star:No
  • Voltage:240 V
  • Watts:8500 W
  • Amps:36A
  • Wall Mountable:Yes
  • Model:900
  • Power Rating:8.5kW
  • Power Supply:1/2/3-N-PE-220VAC
  • Usage:Residential
  • Element Type:Tubular element
  • Rated pressure:0.3-7 bar
  • Temperature setting range:30-55c
  • Master carton quantity:10
  • Water Connections:BSP
  • Protection class:IP24
  • (Hot water (L/min) Maximum at t=25c:2L/min(3.5Kw)/ 6.9L/min(12Kw
  • Weight:4.80 lbs