Compact electric tankless · MIZUDO

MIZUDO Classic 14 Electric Tankless Water Heater

14 kW compact electric tankless, about 58 A at 240 V

14 kW240 V~58 A1 x 60A breaker3.4 GPM max~1.4 GPM at 70°F rise

Updated October 2026

The short answer

A well-specified compact electric tankless for one shower at a time in mild climates.

Delivers
14 kW.
Watch for
Flow drops with cold inlet water.
Suits
One shower at a time in mild climates.
Max flow (maker)
3.4
Power
14 kW
Voltage
240 V AC
Breakers (maker)
1 x 60A breaker
Connections
1/2" npt
Material
Housing material is iron
Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

What it delivers

The MIZUDO Classic 14 Electric Tankless Water Heater is a compact electric tankless rated at 14 kW on 240 volts. Its listing gives a maximum flow of 3.4 GPM.

Expect about 1.4 GPM with cold winter water (a 70°F rise) and 2.1 GPM when the inlet is milder (45°F rise); that is less than one 2 GPM shower in January. Size it to your fixtures.

At 240 volts 14 kW is about 58 amps. The maker calls for 1 x 60A breaker. Whether your panel can carry it alongside heating and cooking loads is an electrician's call.

It skips venting entirely, but the amps are the hurdle: check the panel before the plumbing.

Listed details: connections: 1/2" npt; material: Housing material is iron; model: Classic 14.

The listing gives dimensions of 9.57 in (W) x 14.3 in (H).

Right unit for this house?

Install it when

  • One shower at a time in mild climates
  • Homes with no gas service

Look at another unit when

  • Panels without spare capacity
  • More than 1 shower at once in cold winters

Strengths and trade-offs

Strengths

  • 14 kW
  • Up to 3.4 GPM
  • No venting or gas line
  • Breakers stated by the maker

Trade-offs

  • Flow drops with cold inlet water

Install limits

  • Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.

Rated performance

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model numberClassic 14Retailer
Dimensions (seller)9.57"W x 14.3"HRetailer
Power14 kWRetailer
Voltage240 V ACRetailer
MaterialHousing material is ironRetailer
Max flow (maker)3.4Retailer
Breakers (maker)1 x 60A breakerRetailer
Connections1/2" nptRetailer

Rival units at this flow

More electric tankless water heaters rated for similar demand

Full electric tankless water heaters spec grid · Every MIZUDO unit in the catalog

Final verdict

A well-specified compact electric tankless for one shower at a time in mild climates.

Buy this unit

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What breakers does the MIZUDO Classic 14 Electric Tankless Water Heater need?
About 58 amps at 240 volts (14 kW ÷ 240 V). The maker calls for 1 x 60A breaker. Panel capacity, breakers and wire are confirmed by a licensed electrician from the manual.
How much hot water does the MIZUDO Classic 14 Electric Tankless Water Heater deliver in winter?
About 1.4 GPM at a 70°F rise and 2.1 GPM at a 45°F rise, estimated from its power and capped at its stated maximum.