A. O. Smith 208V / 28 kW 4-Chamber Electric Tankless Water Heater

Model R4LA-280X
Voltage
Max Wattage
  • Delivers continuous hot water when sized appropriately
  • Dry-fire protection prevents premature element failure for care-free installation
  • Easily wall mount with no venting required
Product Details
  • Delivers continuous hot water when sized appropriately
  • Dry-fire protection prevents premature element failure for care-free installation
  • Easily wall mount with no venting required
  • Uses standard heating elements for easy maintenance & replacement
  • Save valuable storage space with compact design
  • Includes self diagnostics and leak detection shutdown for added peace of mind
  • Includes user friendly digital interface for temperature control and diagnostics
  • Scale reduction technology protects against hard water build up and extends the product life
  • 5-year limited tank and 1 year parts warranty

  • The 208 Volt 28 Kilowatt 4-Chamber Electric Trankless Water Heater can provide continuous hot water when sized appropriately. A. O. Smith's Electric Tankless water heaters only heat water when needed, leading to potential energy and utility bill savings. These models are easy to install and save valuable storage space--they can be wall mounted, using standard 3/4-in NPT water connections and do not require venting. Designed with a soft start, the electric tankless produce a soft electric draw when powering on, reducing light dimming impact. Electric tankless water heaters typically require greater electrical supply capacity than standard tank-type models. This model requires 208 volts, 135 amps, 2 x 70 amp double pole breaker and #6 AWG wire size. Please check with your local professional to ensure your home's power supply and breaker panel can support this model. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standard and are only available for purchase through professional wholesalers and contractors.

Specifications
Tech Specs
UEF
0.92
Power Source
ELECTRIC
Limited Tank Warranty
15 Years
Limited Parts Warranty
5 Years
ASME Certified
No
Amperes
140
Destination Country
US
Installation Type
INDOOR
Limited Heat Exchanger Warranty 
5 Years
Max Flow Rate
2.50
Max Wattage
28,000
Number of Elements
4
Product Tier
ProLine®
Shipping Height 
21.56
Shipping Length 
19.81
Shipping Width 
11.06
Side Loop
No
Voltage
208
Dimension & Venting
Type
Water Heater
Width
17"
Shipping Weight
22lbs