A.O. SMITH A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)
A.O. SMITH A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)
A.O. SMITH A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)

A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)

A.O. SMITH
Brand: A.O. SMITH
SKU: ATO-340HX3-N
Availability: In Stock

Ships via freight in 1-3 business days

$1,396.49
$1,396.49
LTL Delivery

This product weighs 59 lb each and will be shipped via LTL carrier. A lift gate option will be added free of charge for your convenience.

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Product Description

The A.O. SMITH ATO-340HX3-N condensing ultra-low NOx outdoor tankless water heater with X3 scale prevention technology delivers continuous hot water while protecting against scale build-up. This tankless water heater uses up to 180,000 BTU/hr of natural gas. It is extremely efficient and complies with Ultra-Low NOx regulations.

  • Maintains like-new performance for the life of the product vs. tankless models without X3.
  • Commercial-grade copper heat exchanger stabilizes outgoing water temperatures quicker.
  • Wall-mount design saves valuable space and allows for additional storage and flexibility.

Product Highlights

This A.O. Smith tankless water heater is an ideal choice for residential single-family applications with continuous hot water needs and hard water concerns.

Product Information

Standard Information

  • Brand: A.O. SMITH
  • Manufacturer Part Number: ATO-340HX3-N
  • Country of Origin: US
Technical Specifications
Product Type
Tankless Heater
Type
Condensing
Installation Type
Outdoor Only
Fuel Type
Natural Gas
Water Connection
3/4"
Gas Connection
3/4 in NPT
Inlet Gas Pressure
4.0-10.5"W.C
BTU (Max)
180000
BTU (Min)
15000
Gas Input
15000-180000 BTU/h
Voltage
120v
Max Flow (GPM)
8
Height (Inches)
23.625"
Depth (Inches)
11-1/4"
Width (Inches)
17-3/4"
Energy Factor
0.94
Vent Type
Power Direct Vent
Application
Residential
Flow Rate at 40F Temp Rise (GPM)
6.7
Flow Rate at 50F Temp Rise (GPM)
6.1
Flow Rate at 60F Temp Rise (GPM)
5
Flow Rate at 70F Temp Rise (GPM)
4.3
UEF
0.94
Maximum BTUs
180,000
Power Source
GAS
Water Connection Location
BOTTOM
Emissions
Ultra-Low NOx
ASME Certified
No
Digital Display
Yes
Fuel Source
NATURAL
GPM (@67 F Temp Rise)
5.3 GPM
Minimum BTUs
13,000
Commercial/Residential/Dual
Commercial/Residential
Condensing/Non Condensing
Condensing
Flow Rate
8 gpm
Heating Capacity
180000 Btu/hr
Ignition Type
Electronic Spark
Pressure Rating
15 to 150 psi
Series
ATI-340HX3-N
Vent Size
3/4 in
Application Type
For Residential
Water Connection Size
3/4"
Heat Exchanger
Commercial Grade Copper
Secondary Heat Exchanger
Stainless Steel
ENERGY STAR Certified
Yes
Remote Control
Yes
Technology
Condensing
Gas Type
NG Natural Gas
Maximum Flow Rate
8 GPM
Maximum Gas Input
180000
Minimum Flow Rate
4.3 GPM
Minimum Gas Input
15000
Altitude Certification
6000 ft.
Frequency
60 Hertz
Max BTU Input
180000
Uniform Energy Factor
0.94
Duct Size
3" Round, 4" Round
A.O. SMITH A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)

Vendor: A.O. SMITH

A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)

$1,396.49

Vendor: A.O. SMITH

A.O. Smith ATO-340HX3-N 180,000 BTU Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (NG)

$1,396.49

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