How much electrical work does this need?

It needs three separate dedicated 240V circuits sized for 27 kW total. That usually means a large service panel and a licensed electrician, and many older homes cannot support it without an upgrade.

How many fixtures can it run at once?

The 6.5 GPM flow rate is rated for 2 to 4 fixtures. Running a shower and a sink together is fine; filling a tub while the dishwasher runs will push it.

Does cold incoming water reduce performance?

Yes. Electric tankless heaters raise water temperature by a fixed amount, so colder groundwater means lower output. In cold climates, expect fewer fixtures at full temperature in winter.

What temperature range can I set?

You can set it from 86°F to 131°F in 1°F steps using the knob and LED screen. That covers normal domestic use, though it is below the range of some gas models.

Is it good for a whole house?

It is designed for whole-house use, but only if your electrical service supports 27 kW. If it does not, a smaller electric unit or a gas tankless model is the more practical route.

What safety features does it have?

It has leakage and overheat protection and is CSA certified for U.S. and Canadian standards. Stainless steel heating elements help limit scale buildup over time.

Unbranded

27kw Tankless Electric Water Heater, 6.5 GPM, 240v for Whole House Use

Best price now

$568.50at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

Unbranded

27kw Tankless Electric Water Heater, 6.5 GPM, 240v for Whole House Use

Best price now

$568.50at WalmartChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $568.50 at Walmart on Nov 9.

Our take on the 27kw Tankless Electric Water Heater, 6.5 GPM, 240v for Whole House Use

This is a whole-house electric tankless water heater rated at 27 kW and 240 volts, with a 6.5 GPM flow rate that can feed 2 to 4 fixtures at once. It heats water on demand, so there is no tank to keep warm and no standby loss. Temperature is set from 86°F to 131°F in 1°F steps on a knob and LED screen, and it carries CSA certification with leak and overheat protection. The catch is electrical: 27 kW needs three dedicated 240V circuits, which usually means a heavy service panel and a licensed electrician. Compared with gas tankless units it avoids venting, but it draws far more power than smaller single-circuit electric models.

Best forWhole-house hot water in homes with 200A or higher electrical serviceHouseholds running 2 to 4 fixtures at onceOwners replacing a tank who want to free up floor spaceWarm-climate homes where incoming water is not very cold

Pros

On-demand heating with no standby tank losses
6.5 GPM supports multiple fixtures at once
Precise 1°F temperature steps from 86°F to 131°F
Stainless steel elements resist scale buildup
Compact wall-mounted design saves floor space
CSA certified with leak and overheat protection

Cons

Requires three dedicated 240V circuits, a costly install
27 kW draw may exceed older electrical panels
Electric tankless output drops when incoming water is cold
No gas option, so it is not a fit for every home
Unbranded unit means limited parts and support certainty

27kw Tankless Electric Water Heater, 6.5 GPM, 240v for Whole House Use prices at every store

WalmartNew
In stockSold by YellowMeyReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$568.50Free shippingChecked Nov 9
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About the 27kw Tankless Electric Water Heater, 6.5 GPM, 240v for Whole House Use

This tankless electric water heater supplies hot water on demand for whole house use. It heats water as it is needed, so there is no preheating and no standby energy loss like a traditional tank model. Its compact, space-saving design fits a range of installation locations.

The unit runs at 27 kW and 240V and needs three dedicated 240V circuits. It has a 6.5 GPM flow rate and supports 2 to 4 home water fixtures. Temperature is set with a knob and an LED screen, from 86°F to 131°F in 1°F steps.

Stainless steel heating elements reduce scale buildup for longer service life. Leakage protection and overheat protection are built in. The heater is CSA certified to U.S. and Canadian standards.

Power: 27 kW
Voltage: 240V
Circuits: 3 dedicated 240V circuits required
Flow rate: 6.5 GPM
Fixtures supported: 2 to 4 home water fixtures
Temperature range: 86°F to 131°F, adjustable in 1°F steps
Controls: Knob and LED screen
Heating elements: Stainless steel
Safety: Leakage protection, overheat protection
Certification: CSA (U.S. and Canada)
Brand: Unbranded

Specifications

color: OtherSource

Questions and answers

How much electrical work does this need?: It needs three separate dedicated 240V circuits sized for 27 kW total. That usually means a large service panel and a licensed electrician, and many older homes cannot support it without an upgrade.
How many fixtures can it run at once?: The 6.5 GPM flow rate is rated for 2 to 4 fixtures. Running a shower and a sink together is fine; filling a tub while the dishwasher runs will push it.
Does cold incoming water reduce performance?: Yes. Electric tankless heaters raise water temperature by a fixed amount, so colder groundwater means lower output. In cold climates, expect fewer fixtures at full temperature in winter.
What temperature range can I set?: You can set it from 86°F to 131°F in 1°F steps using the knob and LED screen. That covers normal domestic use, though it is below the range of some gas models.
Is it good for a whole house?: It is designed for whole-house use, but only if your electrical service supports 27 kW. If it does not, a smaller electric unit or a gas tankless model is the more practical route.
What safety features does it have?: It has leakage and overheat protection and is CSA certified for U.S. and Canadian standards. Stainless steel heating elements help limit scale buildup over time.
Where is the 27kw Tankless Electric Water Heater, 6.5 GPM, 240v for Whole House Use cheapest?: At Walmart, for $568.50, as of our latest check.