Our take on the Rheem 685342 27 KW Tankless Electric Water Heater 240

The Rheem 27 kW tankless electric water heater heats water on demand at 240 V and 27,000 W, so there is no tank to keep warm between draws. That output is high for an electric unit, enough to serve a whole house in warm climates or a large apartment in cooler ones. It suits homes that already have the heavy electrical service a 27 kW unit needs, and it competes with other high-output electric tankless models on capacity rather than on extras. Electric tankless units like this cost more to wire than gas models and can strain a panel, so the install matters as much as the unit.

Best forWhole-house hot water in warm climatesLarge households with high simultaneous demandReplacing a tank heater where floor space is tightHomes with spare electrical capacity

Pros

High 27 kW output for an electric tankless unit
Endless hot water with no tank to run out
Compact wall-mounted design frees floor space
No standby heat loss from a stored tank
On-demand heating suits intermittent use

Cons

Needs a large dedicated electrical service and heavy wiring
Electric tankless can raise peak power draw
May need multiple units or a gas model in cold climates
Professional installation is typically required

Questions and answers

How much hot water can a 27 kW unit deliver?

At 27,000 W and 240 V it can supply a strong flow of hot water, enough for a whole house in mild climates. In cold incoming water the achievable temperature rise and flow drop, so size it to your climate and peak demand.

What electrical service does it need?

A 27 kW unit draws about 112 A at 240 V, so it needs a large dedicated circuit and often a service upgrade. Confirm your panel capacity with a licensed electrician before buying.

Is it better than a tank water heater?

It gives endless hot water and frees floor space, with no standby losses. A tank heater is simpler and cheaper to install and does not demand a heavy electrical service.

Can it run a whole house?

In warm regions with moderate incoming water temperatures, yes. In cold climates the temperature rise is limited, so many homes pair it with a second unit or choose gas.

Does it need annual maintenance?

Electric tankless units have no burner and little to service, but mineral scale can build up in hard water. Flushing or descaling periodically keeps performance up.

Where is the Rheem 685342 27 KW Tankless Electric Water Heater 240 cheapest?

At Liberty Supply, for $868.95, as of our latest check.

Rheem 685342 27 KW Tankless Electric Water Heater 240

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$868.95at Liberty SupplyChecked Nov 9

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Price facts

Last seen at $868.95 at Liberty Supply on Nov 9.

Our take on the Rheem 685342 27 KW Tankless Electric Water Heater 240

Best forWhole-house hot water in warm climatesLarge households with high simultaneous demandReplacing a tank heater where floor space is tightHomes with spare electrical capacity

Pros

High 27 kW output for an electric tankless unit
Endless hot water with no tank to run out
Compact wall-mounted design frees floor space
No standby heat loss from a stored tank
On-demand heating suits intermittent use

Cons

Needs a large dedicated electrical service and heavy wiring
Electric tankless can raise peak power draw
May need multiple units or a gas model in cold climates
Professional installation is typically required

Rheem 685342 27 KW Tankless Electric Water Heater 240 prices at every store

Liberty SupplyNew
In stockReturn policy
$868.95Checked Nov 9
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About the Rheem 685342 27 KW Tankless Electric Water Heater 240

This is a tankless electric water heater that heats water on demand. It is designed for residential and commercial applications.

It is rated at 27,000 watts (27 kW) at 240 volts.

Brand: Rheem
Model: 685342
Type: Tankless electric water heater
Power: 27,000 W (27 kW)
Voltage: 240 V
Use: Residential and commercial

Questions and answers

How much hot water can a 27 kW unit deliver?: At 27,000 W and 240 V it can supply a strong flow of hot water, enough for a whole house in mild climates. In cold incoming water the achievable temperature rise and flow drop, so size it to your climate and peak demand.
What electrical service does it need?: A 27 kW unit draws about 112 A at 240 V, so it needs a large dedicated circuit and often a service upgrade. Confirm your panel capacity with a licensed electrician before buying.
Is it better than a tank water heater?: It gives endless hot water and frees floor space, with no standby losses. A tank heater is simpler and cheaper to install and does not demand a heavy electrical service.
Can it run a whole house?: In warm regions with moderate incoming water temperatures, yes. In cold climates the temperature rise is limited, so many homes pair it with a second unit or choose gas.
Does it need annual maintenance?: Electric tankless units have no burner and little to service, but mineral scale can build up in hard water. Flushing or descaling periodically keeps performance up.
Where is the Rheem 685342 27 KW Tankless Electric Water Heater 240 cheapest?: At Liberty Supply, for $868.95, as of our latest check.