Home / A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater
  • A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater

A.O. Smith Signature 100 40-Gallons Tall 6-year Warranty 40000-BTU Natural Gas Water Heater

Generate efficient and reliable hot water for households with 3 to 4 people, when sized appropriately, with A. O. Smith’s Signature 100 Series Tall Ultra Low NOx Atmospheric Vent Natural Gas 40-Gallon Water Heater. With an environmentally friendly 40,000 BTU Ultra Low NOx gas burner, this model delivers 72 gallons of hot water in the first hour. It features an electronic gas valve that provides precise temperature control for optimum hot water delivery without the need for an external power source. For your convenience, the gas valve also includes an LED status indicator for diagnostics reporting and a push button ignition to simplify the startup process. A. O. Smith’s 40-gallon natural gas water heater is designed with your safety in mind. With a built-in safety system, this model reduces the risk of accidental flammable vapor ignitions. A factory-installed temperature and pressure relief valve and tamper-proof drain valve also ensures safe operation. This model is built to last. It features Tank Guard® which is designed to provide ultimate tank protection and increase lifespan of the water heater. This added protection comes with a 6-year limited warranty to give you additional peace of mind. Call 1-877-GOEhotmall to get this water heater installed.

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Generate efficient and reliable hot water for households with 3 to 4 people, when sized appropriately, with A. O. Smith’s Signature 100 Series Tall Ultra Low NOx Atmospheric Vent Natural Gas 40-Gallon Water Heater. With an environmentally friendly 40,000 BTU Ultra Low NOx gas burner, this model delivers 72 gallons of hot water in the first hour. It features an electronic gas valve that provides precise temperature control for optimum hot water delivery without the need for an external power source. For your convenience, the gas valve also includes an LED status indicator for diagnostics reporting and a push button ignition to simplify the startup process. A. O. Smith’s 40-gallon natural gas water heater is designed with your safety in mind. With a built-in safety system, this model reduces the risk of accidental flammable vapor ignitions. A factory-installed temperature and pressure relief valve and tamper-proof drain valve also ensures safe operation. This model is built to last. It features Tank Guard® which is designed to provide ultimate tank protection and increase lifespan of the water heater. This added protection comes with a 6-year limited warranty to give you additional peace of mind. Call 1-877-GOEhotmall to get this water heater installed.

  • Delivers the ideal amount of hot water for households with 3 to 4 people when sized appropriately
  • Features an environmentally-friendly 40,000 BTU ultra-low NOx burner that delivers 72 gallons in the first hour
  • Electronic gas valve provides precise temperature control for optimum hot water delivery
  • Self-diagnostic electronic gas control incorporates an LED status indicator that monitors and reports on system operational status
  • Built-in safety system reduces the risk of accidental flammable vapor ignitions
  • Tall, slim 62-in H x 18-in diameter profile enables easier installation in narrow spaces
  • Tank Guard® provides advanced tank protection that extends the life of your gas water heater
  • High-altitude certified from 0 ft to 10,100 ft
  • Provides peace of mind with a 6-year limited tank and parts guarantee and a 1-year limited labor warranty

General

  • Series Name: Signature 100
  • Type: Tank

Dimensions

  • Diameter (Inches): 18
  • Family Size: 4.0
  • Height (Inches): 62
  • Insulation Thickness (Inches): 1.0
  • Nominal Capacity (Gallons): 40
  • Rated Storage Capacity: 38-Gallon
  • Vent Diameter(s): 3-in
  • Water Connection Size: 3/4-in
  • Weight (lbs.): 125.0

Features

  • BTU Rating: 40000
  • Emission Rating: Ultra Low NOx
  • Foam Insulation: Yes
  • For Use with Mobile Homes: No
  • Fuel Type: Natural gas
  • GPH Recovery at 90 Degrees F (Gallons): 41
  • Grade: Residential
  • High Altitude Model: Yes
  • Ignition Type: Piezo
  • Pilot Light Window: Yes
  • Pilot Reset Button: Yes
  • Point of Use: No
  • Power Source: Gas
  • Temperature and Pressure Relief Valve: Yes
  • Uniform Energy Factor: 0.55
  • Use Location: Indoor
  • Vent Type: Type B double wall
  • Venting Type: Atmospheric
  • Water Connection Location: Top
  • Water Heater Style: Tall

Compatibility

  • Bluetooth Compatibility: No
  • Smart Compatible: No
  • Wi-Fi Compatibility: No

Warranty

  • Warranty: 6-year limited

Certifications

  • CA Residents: Prop 65 Warning(s): Yes
  • ENERGY STAR Certified: No
  • Safety Listing: CSA safety listing
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