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The Mizudo ET003A3G is a 3.5 kW point-of-use electric tankless heater built for a single sink, not a shower or a whole house. It heats water on demand with no tank, shows the set temperature on an LED display, and adjusts from 80F to 130F. Its small 6.9 x 8.1 x 2.5 inch body fits under a sink or inside a cabinet, and it adds overheat protection, leak detection and isolated water and electrical sections. Against larger 240V tankless units it is far weaker and needs a dedicated 120V/30A circuit, so it suits a bathroom or kitchen handwash sink where a tank heater would waste space and standby heat.
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Lowest price we've seen: $179.99 on Nov 9 at The Home Depot. Tracked across 2 stores since Nov 9.
The Mizudo 3.5 kW electric tankless water heater (ET003A3G) heats water at the point of use. It has no storage tank and does not need to preheat, so hot water is available instantly. It is designed for single-sink use, such as handwashing and light dish rinsing. It is not intended for showers or whole-house supply.
The compact unit measures 6.9 in. x 8.1 in. x 2.5 in. and weighs 1.68 lbs, so it can fit under a sink or inside a cabinet. An LED digital display shows the temperature, which can be adjusted from 80F to 130F.
The heater requires a 120V / 30A dedicated circuit and standard 1/2 in. NPT water connections. Safety features include overheat protection, leak detection, and an isolated water and electrical design. The unit does not support three-phase power.
