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Atmor AT900-13 Point-of-Use Tankless Electric Instant Water Heater, 13 kW / 240V

Atmor 13kw/240v Point-Of-Use Tankless Electric Instant Water Heater Including Pressure Relief Device, AT-900-13
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SAVE ENERGY, WATER, MONEY, TIME – Atmor offers the efficient and convenient water heating solution you have been looking for. Atmor 13kW/ 240V Point-of-Use Tankless Electric Instant Water Heater provides an unlimited flow of hot water without the wait or worry of ever running out. That’s right, instant hot water on demand! Rest your mind at ease and enjoy the continuous flow of hot water whenever you want. This unit is specifically designed for a full bathroom (a water saver shower head required for optimal performance). Perfect for residential and commercial use, this compact unit can be installed against the wall either under the sink out of sight or near the point of use. Unit requires a 60 Amp dedicated single-phase, double pole breaker. Required wire size: 4 AWG. Standard 1/2" NPT (straight thread) fittings. For safety reasons, the included Pressure Relief Device (PRD) included must be installed on your water heater per the instructions in the owner's manual. Failure to comply with the installation and operating instructions in our Owners Manual or improper use will void the warranty. For assistance prior to purchasing this unit, please call 1-888-783-6082 or e-mail The water heater must be installed by a licensed electrician in compliance with all local and building regulations.


  • IDEAL for a FULL Bathroom - Sink and Shower Combination
  • Recommended flow rate 2.25 GPM (Gallons per Minute). Water saver shower head (1.5 GPM) highly recommended for optimal performance when used as a full bathroom solution
  • Requires a direct connection to a 60 Amp single-phase, double pole breaker. Required wire size: 4 AWG. 240 volts.
  • 3 Settings: High - 13kw, Medium - 8.5kw, Low - 4.5 kw
  • Includes a Pressure Relief Device (PRD)