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APUS

27kW Tankless Water Heater Electric, APUS 240V On Demand Instant Hot Water with Memory Function & LED Display, Energy-Saving Whole Home Water Heating System, Up to 6.5 GPM and Space Saving Design,Gray

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Availability: In Stock.
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Arrives Sunday, Jul 12
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Set name: AP-27kW,Gray


Features

  • Endless Instant Hot Water On Demand: Experience continuous electric tankless water heater performance with our powerful 27kW tankless water heater, delivering on-demand hot water at up to 6.5 GPMideal for 3-4 simultaneous uses (showers, sinks, appliances). The advanced cast aluminum heating element ensures rapid, efficient heating in this tankless hot water heater electric, with no preheating, no waiting, and no cold interruptions.
  • Smart Control with Memory Function: Precisely set your temperature (86F-140F) via the LED display on this electric tankless water heater 240V, with 1F adjustments for ultimate comfort. The memory function saves settings after power cycles, while self-modulating tech adjusts energy use for efficiencyperfect for smart tankless water heater operation.
  • Compact & Space-Saving Design: This sleek electric water heater (17.72" x 11.42" x 3.54") fits tight spaces, saving 90% more room than tank models. With 3/4" NPT connections and 240V compatibility, installation is effortless (requires 340 A breakers,68 AWG cable)ideal for whole-house or point-of-use setups.
  • Energy Efficient & Cost Effective: Our electric tankless water heater achieves 99.8% thermal efficiency, cutting 60% energy costs by only heating water when needed. Zero standby loss and anti-scale cast aluminum maximize savingseco-friendly and budget-friendly.
  • Reliable Safety Protection: This tankless water heater electric features water-electricity separation and multi-layer safeguards (overheat, dry-fire, leakage protection) for worry-free use. Corrosion-resistant cast aluminum ensures durability, backed by rigorous testing.

Brand: APUS


Power Source: Breaker：3 x 40 AMP，Cable Required：6x8AWG，Hard Wiring Required


Product Dimensions: 11.42"W x 17.72"H


Special Feature: 24/7 Customer Service and Warranty, Demand Hot Water, High Efficiency, Separation of Water and Electricity, ±1°F Stable Temperature Control See more


Color: AP-27kW,Gray


Power Source: Breaker：3 x 40 AMP，Cable Required：6x8AWG，Hard Wiring Required


Special Features: 24/7 Customer Service and Warranty, Demand Hot Water, High Efficiency, Separation of Water and Electricity, ±1°F Stable Temperature Control


Wattage: 27000 watts


Voltage: 240 Volts


Maximum Temperature: 140 Degrees Fahrenheit


Efficiency: 99.8%


Mount Type: Wall


Is Electric: Yes


Item Dimensions W x H: 11.42"W x 17.72"H


Item Weight: 18.96 Pounds


Material Type: Sheet Metal with Insulating Paint


Brand Name: APUS


Model Number: AP- ADSK-270G13


Manufacturer: APUS


Included Components: Water heater x1;Instruction manual x1;Rubber x5;Screw x5;Installation guide card x1;φ24×3 sealing ring x2


Unit Count: 1.0 Count


Color: AP-27kW,Gray


Style Name: AP-27kW


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Professional quality and excellent value. Professional quality and excellent value.
Set name: AP-27kW,Gray
Review Image by Rong
Bought this for a client's home. It’s a powerful 27kW unit that delivers consistent hot water. Much more affordable than big-box store brands but works just as well. The digital display is user-friendly and the gray finish looks premium. Great choice for any home renovation.
Reviewed in the United States on May 1, 2026 Reviewed in the United States on May 1, 2026 by Rong
    • Water Heater
Set name: AP-27kW,Gray
I haven't installed it yet but looks like it will do the job for what I need. A friend bought the same one & absolutely loves it so I'm hoping for the same results.
Reviewed in the United States on May 22, 2026 by Alan Hart
    • Love it
Set name: AP-18kW,Gray
Easy install, doesn't heat as fast as my previous unit but does the job and once it's hot it's hot and stays hot.
Reviewed in the United States on May 27, 2026 by ant
    • Temp range misleading
Set name: AP-18kW,Gray
Unit will not reach 140°@4gpm unless in coming water is already at 90° per customer support. Other then that it's a good unit. So if you own a garden tub and want to keep your wife happy don't but this one
Reviewed in the United States on April 12, 2026 by wesley chappell
    • Nice choice!
So far so good, works excellent, you'll need fittings from your local supplier and make sure you tighten them well to prevent any leaks. Be careful with your heat setting as this thing will heat water to a scalding temperature!
Reviewed in the United States on April 17, 2026 by Fast Eddie
    • Great product and super customer service
After an error of installation on my part, caused the unit to not work. Customer service sent me a replacement free of charge even though it was my fault. Installed the replacement correctly and it worked perfectly. This company stood behind their product. Super customer service. I would highly recommend them. ... show more
Reviewed in the United States on March 24, 2026 by j9wern
    • Works great
Set name: AP-18kW,Gray
Working great. Easy to install
Reviewed in the United States on March 23, 2026 by TJ Friar
    • Constant hot water no wait time for heating.
Set name: AP-18kW,Gray
I have been using a Tankless Water Heater for many years and this one was a replacement for my old one and so far works great.
Reviewed in the United States on April 25, 2026 by AgnesC

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