Atmor AT-900-04 (3.8 kW/240V) Tankless Electric Instant Water Heater

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Atmor AT-900-04 (3.8 kW/240V) Tankless Electric Instant Water Heater

Brand Name

brand Atmor

Average Review

6 Reviews

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Product Information


In most U.S. homes, storage tank water heating is usually the second largest energy expense accounting for up to 30 percent of the average home energy bill, after space heating and cooling. Inconvenient situations such as waiting for water to turn hot, heating up the tank again after running out, and constantly heating a tank of water even when it is not in use all add up to this expense.

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  • Colors/ finish: White
  • Materials: Plastic/ metal
  • Set includes: One (1) water heater
  • Dimensions: 7.29 inches long x 11.82 inches wide x 3.55 inches deep
  • Weight: 3.4 pounds
  • Care instructions: Must be installed by a licensed electrician/ plumber and comply with all applicable codes
  • Not a plug-in unit
  • Minimum Activation Rate: 0.5 gpm (gallons per minute)
  • Water Flow at Temperature Rise gpm/ deg F: Flow Rate at 35 F Rise: 0.74 gallons/min / Flow Rate at 45 F Rise: 0.56 gallons/min / Flow Rate at 77 F Rise: 0 gallons/min
  • Applications: 1-2, Wall mountable, bottom water connection, 0.5 inch water connection size
  • Overheat protection
  • Nominal water volume: 0.11 gallon
  • Operating temperature: 36 F, Min/Max Temp: 65F/130F
  • Working pressure: 8 BAR/115 PSI
  • Maximum working pressure: 16 BAR/230 PSI
  • Required wire size: 12 AWG
  • 16A, 3800W, 240V, Single Phase
  • Two years parts only limited warranty, 7 years free from leakage, UL listed

Assembly Required

Country of Origin: China


Item #
Brass, Metal, Plastic
Assembly Required
See Details
2 year Limited Manufacturer
Model Number