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  • ENERGY STAR Certified
    Water Heaters

    Water heaters that earn the ENERGY STAR come with gas, solar or electric heat pump technology. They heat your water just like standard models but with much less energy, saving you up to $3500 over a unit’s lifetime.

Learn what to look for when buying and installing an ENERGY STAR certified water heater.

See buying guidance for:

A. O. Smith - HE Flue Damper : G12-FDT4040NVR 100

Specificationsdownload pdf open pdf

ENERGY STAR PartnerField details: A.O. Smith Corporation
TypeField details: Gas Storage
FuelField details: Natural Gas
Storage Volume (gallons)Field details: 38.0
Tank Height (inches)Field details: 58.0
Height to Vent (inches)Field details: 62.0
Tank Diameter (inches)Field details: 20.0
Vent Size (inches)Field details: 3
Vent Size 2 (inches)Field details: 4
Input Rate (BTU/hr)Field details: 40000
Uniform Energy Factor (UEF)Field details: 0.64
Therms Per Year at 125°F outlet tempField details: 224
First Hour Rating at 125°F outlet temp (gallons/hr)Field details: 70
Recovery Efficiency per UEF test method (%)Field details: 73
Date CertifiedField details: 04/10/2019
MarketsField details: United States
ENERGY STAR CertifiedField details: Yes

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