Whole-house electric tankless · Eemax

Eemax EEM24036 36 kW Electric Tankless Water Heater

36 kW whole-house electric tankless, about 150 A at 240 V

36 kW240 V~150 A~3.5 GPM at 70°F rise

Updated October 2026

The short answer

A practical whole-house electric tankless for 2 showers at once in mild climates.

Delivers
36 kW.
Watch for
Draws about 150 A.
Suits
2 showers at once in mild climates.
Power
36 kW
Voltage
240 V
Material
Stainless Steel
Warranty
5 years for leaks and 1 year for parts
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What it delivers

The Eemax EEM24036 36 kW Electric Tankless Water Heater is a whole-house electric tankless rated at 36 kW on 240 volts.

Flow depends on how cold the incoming water is. Our estimate from its input: 5.5 GPM at a 45°F rise, falling to 3.5 GPM at 70°F, which is 1 shower at 2 GPM on a cold-climate winter day. Check your house in the planner.

At 240 volts 36 kW is about 150 amps. Whether your panel can carry it alongside heating and cooking loads is an electrician's call. On its own it takes more than 60% of a 200-amp service.

No flue, no gas line and a compact box on the wall; the trade-off is that a cold winter inlet cuts its flow sharply.

Also on the listing: features: Self-Modulating Technology; material: Stainless Steel; model: EEM24036; warranty: 5 years for leaks and 1 year for parts.

Warranty, per the listing: 5 years for leaks and 1 year for parts.

Right unit for this house?

Install it when

  • 2 showers at once 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

  • 36 kW
  • No venting or gas line

Trade-offs

  • Draws about 150 A
  • Winter flow is much lower
  • Breaker needs not stated

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 numberEEM24036Retailer
Features (seller)Self-Modulating TechnologyRetailer
Power36 kWRetailer
Voltage240 VRetailer
MaterialStainless SteelRetailer
Warranty5 years for leaks and 1 year for partsRetailer

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Final verdict

A practical whole-house electric tankless for 2 showers at once in mild climates.

Buy this unit

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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 Eemax EEM24036 36 kW Electric Tankless Water Heater need?
About 150 amps at 240 volts (36 kW ÷ 240 V). Panel capacity, breakers and wire are confirmed by a licensed electrician from the manual.
How much hot water does the Eemax EEM24036 36 kW Electric Tankless Water Heater deliver in winter?
About 3.5 GPM at a 70°F rise and 5.5 GPM at a 45°F rise, estimated from its power and capped at its stated maximum.