Home Menu Close Nav Left Nav Right Arrow Left Arrow Right Literature Symbol Propane Symbol Heat Waves Symbol Phone Symbol Flame Symbol Electricity Symbol New Electric Symbol New Gas Symbol Clipboard Symbol Signature Signature Select Signature Premier
A. O. Smith 240V / 28 kW 4-Chamber Tankless Electric Water Heater
Product image
Click to Enlarge

A. O. Smith 240V / 28 kW 4-Chamber Tankless Electric Water Heater

Model: R4LR-280E Lowe's Item #: 1055544
Shop Now at Lowe’s

Product Description

  • Enjoy continuous hot water for up to 1 shower and 4 sink when sized appropriately (sink and shower calculations are based on a 0.5 GPM faucet and a 2.5 GPM showerhead in the southern zone)
  • Save space - Compact design frees up valuable storage space
  • Easy installation - wall mount installation uses standard 3/4-in NPT water connections and does not require venting
  • Simple maintenance - includes no moving parts and uses standard heating elements for easy replacement
  • Scale reduction technology and heating element power sharing reduces harmful mineral deposit buildup resulting in extended product life
  • Dry-fire protection prevents premature element failure for worry-free installation
  • Simple temperature adjustment from 90° to 140°F using intuitive digital interface
  • 5-year limited residential warranty gives you peace of mind
  • Try our product selector tool to see if this is the right water heater for you

Signature Series Features

These features are included with all Signature Series water heaters.

Space Saving
Scale Reduction Technology
Continuous Hot Water
Learn More
Shop Now at Lowe’s

Product Features

  • Enjoy continuous hot water for up to 1 shower and 4 sink when sized appropriately (sink and shower calculations are based on a 0.5 GPM faucet and a 2.5 GPM showerhead in the southern zone)
  • Save space - Compact design frees up valuable storage space
  • Easy installation - wall mount installation uses standard 3/4-in NPT water connections and does not require venting
  • Simple maintenance - includes no moving parts and uses standard heating elements for easy replacement
  • Scale reduction technology and heating element power sharing reduces harmful mineral deposit buildup resulting in extended product life
  • Dry-fire protection prevents premature element failure for worry-free installation
  • Simple temperature adjustment from 90° to 140°F using intuitive digital interface
  • 5-year limited residential warranty gives you peace of mind
  • Try our product selector tool to see if this is the right water heater for you
Product image

RESOURCES

  • Product Dimensions

    Type: Space Saving
    Height: 18"
    Width: 17"
    Depth: 6.00"
    Shipping Weight: 20 lbs.

    Configuration and Overview

    Application: Whole Home
    Number of Chambers: 4
    UEF: 0.92
    Limited Chamber Warranty: 5 years
    Limited Parts Warranty: 1 years
    Max Wattage: 28000
    Voltage: 240
    Amps: 117
    Wire Size: 6
    Digital Display: Yes
    Water Connection Location: Top
    Water Connection Size: 3/4

  • Owners Manual
    Comprehensive information about your new appliance - from getting started to cleaning and maintenance - with answers to frequently asked questions.

    Tankless Electric 2-4 Chamber 100306524 Owners Manual

    You may need to install Adobe Reader Adobe Acrobat Reader to view these documents.

    Warranty Sheet
    Comprehensive information about your Tankless Electric water heater's limited warranty.

    Tankless Electric Point-of-Use Warranty Sheet

    You may need to install Adobe Reader Adobe Acrobat Reader to view these documents.