Ariston Andris 4 Gallon 6 Year 120-Volt Corded Point of Use Mini-Tank Electric Water Heater

Amazon.com Price: $179.99 (as of 03/10/2022 02:59 PST- Details)

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Compact design; wall or floor mounted (wall bracket included)
Provide immediate hot water at the point of use; install as booster or standalone