What wiring does a 27 kW tankless heater need?

At 240 V, 27 kW draws roughly 112 A, so it needs a dedicated circuit with heavy-gauge cable and a matching breaker. Most homes do not have that capacity spare, so an electrician should check the panel first.

Can it supply a whole house?

It is built for one sink or vanity. A 27 kW unit can serve a shower in a warm climate, but cold inlet water and multiple open taps will outrun it.

How hot can the water get?

The thermostat holds output between 86 and 131 F, set in degrees on the touch panel. Final temperature at the tap depends on flow rate and how cold the incoming water is.

Does it need a tank or expansion vessel?

No. It heats water as it flows, so there is no storage tank and no standby heat loss. That also means no hot water during a power outage.

Will hard water damage it?

The water-and-electric separation design keeps the element away from the water path to limit scale. In very hard water areas, a inline filter or softener still helps.

Where is the 27kW Tankless Electric Water Heater cheapest?

At VXB.com Bearings, for $433.95, as of our latest check.

27kW Tankless Electric Water Heater

Best price now

$433.95at VXB.com BearingsChecked Nov 1

Prices are checked against each store and labelled with when.

Visit VXB.com Bearings

27kW Tankless Electric Water Heater

Best price now

$433.95at VXB.com BearingsChecked Nov 1

Prices are checked against each store and labelled with when.

Visit VXB.com Bearings

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Last seen at $433.95 at VXB.com Bearings on Nov 1.

Our take on the 27kW Tankless Electric Water Heater

This is a point-of-use tankless electric water heater rated at 27 kW on a 240 V supply. It heats water on demand with a cast aluminum heating element and holds output between 86 and 131 F through a digital thermostat and LED touch panel. The water-and-electric separation design is meant to limit scale buildup on the element. It suits a single sink or vanity where a dedicated 240 V circuit is available; whole-home use is a stretch at this rating, and it needs heavy-gauge wiring that most household circuits do not have.

Best forA single kitchen sink or bathroom vanityHouseholds with spare 240 V capacityReplacing a small storage heater in a tight spacePeople who want exact temperature control at the tap

Pros

Heats on demand with no standby tank losses
Digital thermostat holds output between 86 and 131 F
LED touch panel sets temperature in degrees
Water-and-electric separation resists scale buildup
Slim body mounts under a sink or vanity

Cons

27 kW draws very high current and needs heavy dedicated wiring
Output drops if incoming water is cold or flow is high
No tank means no hot water during a power cut
Point-of-use only; not a whole-house heater

27kW Tankless Electric Water Heater prices at every store

VXB.com BearingsNew
Availability unknown
$433.95Checked Nov 1
Visit VXB.com Bearings

27kW Tankless Electric Water Heater price history

Lowest price we've seen: $433.95 on Nov 2 at VXB.com Bearings. Tracked across 1 store since Nov 2.

From VXB.com Bearings

Instant heating technology warms water the moment you open the tap
Precision temperature sensor keeps output steady between 86 and 131 F
Water and electric separation design prevents scaling and protects components
Easy LED touch panel lets users dial in exact degrees from 30 to 55 C
Cast aluminum heating coil with 240 V supply and digital thermostat
Mounts directly under a kitchen sink or bathroom vanity for an endless stream of warm water

Materials: Cast aluminum heating coil; cast alloy heating elements
Returns: Free, easy and hassle-free returns on every order
Shipping: Orders currently take 5-10 business days to process before shipping

About the 27kW Tankless Electric Water Heater

This is a 27 kW tankless electric water heater. It heats water as it flows, so hot water is available the moment the tap opens. With no storage tank, it avoids standby heat loss and helps lower utility costs.

The heater has a cast aluminum heating coil and cast alloy heating elements that resist hard water scale buildup. A water and electric separation design helps prevent scaling and protects the components. A precision temperature sensor keeps the output steady.

An LED touch panel and digital display let you set an exact temperature. The slim, compact body mounts directly under a kitchen sink or bathroom vanity and fits into tight utility spaces.

Power: 27 kW
Power source: Electric
Voltage: 240 V
Heating element: Cast aluminum heating coil; cast alloy heating elements
Temperature range: 30 to 55 °C (86 to 131 °F)
Controls: LED touch panel with digital thermostat and temperature display
Installation: Mounts under a kitchen sink or bathroom vanity

Specifications

Power Source: Electric

Questions and answers

What wiring does a 27 kW tankless heater need?: At 240 V, 27 kW draws roughly 112 A, so it needs a dedicated circuit with heavy-gauge cable and a matching breaker. Most homes do not have that capacity spare, so an electrician should check the panel first.
Can it supply a whole house?: It is built for one sink or vanity. A 27 kW unit can serve a shower in a warm climate, but cold inlet water and multiple open taps will outrun it.
How hot can the water get?: The thermostat holds output between 86 and 131 F, set in degrees on the touch panel. Final temperature at the tap depends on flow rate and how cold the incoming water is.
Does it need a tank or expansion vessel?: No. It heats water as it flows, so there is no storage tank and no standby heat loss. That also means no hot water during a power outage.
Will hard water damage it?: The water-and-electric separation design keeps the element away from the water path to limit scale. In very hard water areas, a inline filter or softener still helps.
Where is the 27kW Tankless Electric Water Heater cheapest?: At VXB.com Bearings, for $433.95, as of our latest check.