Skip to content
AO Smith 340H Outdoor Propane ULNOx Condensing Tankless Water Heater

AO Smith 340H Outdoor Propane ULNOx Condensing Tankless Water Heater

by A. O. Smith
$1,288.00 - $1,307.95
$1,288.00
$1,288.00 - $1,307.95
$1,288.00

SAME-DAY SHIPPING
NO HASSLE RETURNS
SATISFACTION GUARANTEE

180,000 BTU tankless gas water heater with Ultra-Low NOx emissions

Features

• 180,000 BTUs
• Maximum flow rate of 6.6 GPM
• ENERGY STAR qualified
• Energy factor of 0.95
• Meets Ultra-Low NOx emission requirements
• Comes with a 15-year limited warranty
• Built in freeze, overheat, and surge protection

Certifications

Specifications

Emissions (ATI/ATO-110U) Ultra-Low NOx
Maximum BTUs 180,000
Minimum BTUs (Natural Gas)
 15,000
Minimum BTUs (Liquid Propane) 13,000
Limited Heat Exchanger Warranty 15 Years
Limited Parts Warranty 5 Years
Water Connection Location Bottom
Water Connection Size 3/4"
Heat Exchanger HRS35 Copper Alloy
Secondary Heat Exchanger Stainless Steel
Voltage 120
Energy Factor 0.95
ENERGY STAR Yes
Remote Control Included
Technology Condensing
Type Space Saving
Height 23 5/8"
Width 17 3/4"
Depth
 11 1/4"
Product Weight 58lbs/26kg
Shipping Weight 62lbs
Vent Type (Indoor models) Direct Vent
Vent Length (Indoor models) 70 feet at 3 diameter
100 feet at 4 diameter
Vent Material PVC, CPVC, PP, ABS, SS

Documentation

• Manual
• Spec Sheet