A.O. Smith ATO-540H-N
A.O. Smith ATO-540H-N
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A.O. Smith ATO-540H-N
A.O. Smith ATO-540H-N
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A.O. Smith ATO-540H - 6.3 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor

Model:

ATO-540H-N

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$1,170.00
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A.O. Smith ATO-540H - 6.3 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
A.O. Smith ATO-540H - 6.3 GPM at 60° F Rise - 0.95 UEF - Gas Tankless Water Heater - Outdoor
Model: ATO-540H-N
$1,170.00
Features
Specifications
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How-To Articles
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Features

Fuel

Natural Gas

Location

Outdoor

# of Showers

3.0

UEF

0.95

Energy Star Certification

Yes



Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."
    A.O. Smith continues to lead the way in residential and commercial water heating with close to 70 years of innovative hot water solutions. The ATO-540H-N is A.O. Smith's high efficiency, Ultra-Low NOx outdoor model, it keeps emissions low by featuring the latest in water heating technology. Switching on when a hot water tap is opened, a built in temperature sensor helps to maintain hot water within a one degree set point during use, and the system automatically shuts off when the tap is closed saving you energy. An included wall mount remote controller gives you simple and complete control over your water heater.
  • High Efficiency Condensing Technology
  • The ATO-540H-N features the latest in water heating condensing technology. This means that the unit can deliver some of the highest efficiency standards on the market, keeping dollars in your pocket.
  • Ultra Low-NOx Emissions
  • The ATO-540H-N is designed to qualify for the most stringent Low-NOx standards. These standards coincide with SCAQMD rules and other air quality management districts.
  • Heavy Duty Heat Exchanger
  • The primary heat exchanger is built out of copper, offering better heat transfer than stainless steel and designed to be more resilient against corrosion. A.O. Smith water heaters are built to last and save you money in the process.
  • Multiple Safety Features
  • ATO models come with a long list of safety features standard. These include: built in freeze protection, manual reset hi limit, an overheat cutoff fuse, inlet and outlet thermistors to monitor temperatures, and a built-in flame sensor.
  • Space Saving Design
  • A.O. Smith tankless heaters take up less space than their conventional counterparts. The convenient wall mount design means they can fit in nearly any outdoor wall layout and offer additional flexibility.
California residents see
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
For more information go to: www.p65Warnings.ca.gov

Specifications

ATO-540H-N
specs product image PID-70002
General Information
Type
Tankless Water Heater
Product Line
Residential
Medium Learn More
Hot Water
Heat Exchanger Material
Copper/Stainless
Fuel Type Learn More
Natural Gas
Combustion Type Learn More
Condensing
Vent Type Learn More
Outdoor (No Venting)
Storage Type
Tankless
Mount Type
Wall
Installation Location
Outdoor
Includes Pump
No
Gas Conversion Kit
Not Available
UPC
671657140953
Performance
Maximum Input Capacity Learn More
199000 BTU
Minimum Input Capacity
15000 BTU
Flow Rate at 40F Temperature Rise Learn More
9.5 GPM
Flow Rate at 50F Temperature Rise Learn More
7.5 GPM
Flow Rate at 60F Temperature Rise Learn More
6.3 GPM
Flow Rate at 70F Temperature Rise Learn More
5.4 GPM
Uniform Energy Factor Learn More
0.95
Flow Rate at 77F Temperature Rise
4.9 GPM
Ultra Low NOx Emissions Learn More
Yes
Low NOx Emissions Learn More
Yes
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Gas Connection Size
3/4 Inch
Cold Water Inlet
3/4 Inch
Hot Water Outlet
3/4 Inch
Product Height
23 5/8 Inches
Product Width
17 3/4 Inches
Product Depth
11 1/4 Inches
Product Weight
59 Pounds
Shipping Weight
59 Pounds
Certifications
Energy Star Listed
Yes
CSA Listed
Yes
AHRI Certified
Yes
ANSI Certified
Yes
UPC Listed
Yes
NSF Certified Learn More
Yes
AHRI Reference Number
5526886
Warranty Information
Parts Warranty Learn More
5 Years
Heat Exchanger Warranty
15 Years

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Recommended Accessories

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Expert Recommended Accessories Selected by Bob, our Expert
Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10

How-To Articles

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