A.O. Smith Water Heater Warranty Information

Residential Gas Water Heaters

CLOSED COMBUSTION

POWER DIRECT-VENT

POWER DIRECT-VENT DESIGN

ProMax Power Direct Vent residential gas models are equipped with FVIR technology to meet Phase III of the ANSI Z21.10.1 standards for the resistance to flammable vapor ignition and resistance to lint, dust and oil accumulation tests.

The two-pipe closed-combustion system draws all make-up air from outside the home, eliminating problems caused by insufficient indoor ventilation.

The system permits combined horizontal and vertical venting and air intake runs up to 45 feet (including one 90º elbow) using 3” Schedule 40 PVC, CPVC or ABS pipe for installation versatility.

INTELLI-VENT®GAS CONTROL

Models are equipped with silicon nitride hot surface igniter and advanced electronics for precise control of water temperature and simpliﬁed system diagnostics.

FACTORY INSTALLED HEAT TRAP NIPPLES

Standard on all models.

QUIET, MODULAR BLOWER

Equipped with 110/120 volt electrical system (rating 3 amps or less), 6-foot cord, standard 3-prong male connector.

A. O. SMITH DYNACLEAN™ DIFFUSER DIP TUBE

Reduces lime and sediment buildup, maximizes hot water output.

Made from long-lasting PEX cross-link polymer.

COREGARD™ ANODE ROD - An A. O. Smith Exclusive

Aluminum anode with stainless steel core protects tank against corrosion longer than ordinary mild steel anodes.

GREEN CHOICE™ GAS BURNER

Patented “Eco-Friendly” design reduces NOx emissions by up to 33%, complies with

Southern California and Texas requirements.

DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE

A. O. SMITH PERMAGLAS® GLASS COATING

Protects steel tank from rust.

FACTORY-INSTALLED TEMPERATURE & PRESSURE (T&P) RELIEF VALVE

CODE COMPLIANCE: UBC, SBCC, CABO, HUD, BOCA NATIONAL CODES,

ASHRAE/IES 90.1-1999 AND 2004 NAECA

DESIGN-CERTIFIED BY CSA INTERNATIONAL

According to ANS Z21.10.1 standards governing storage-type water heater.

6-YEAR LIMITED TANK AND PARTS WARRANTY

For complete information, consult written warranty or A. O. Smith Water Products Company.

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Created October 2008	AOSRG45900

AOSRG45900 specifications

A.O. Smith is a well-known name in the field of water heating and treatment, recognized for its commitment to quality and innovation. One notable product is the A.O. Smith AOSRG45900, a high-efficiency residential gas water heater designed to meet the needs of modern households. This model seamlessly combines advanced technology and user-friendly features, making it a popular choice for consumers.

At the core of the AOSRG45900's appeal is its impressive energy efficiency. It boasts an Energy Factor (EF) rating that places it among the top contenders in the market for energy-efficient water heating. This translates to lower energy bills and a reduced environmental footprint, highlighting A.O. Smith's dedication to sustainability.

One of the standout features of the AOSRG45900 is its revolutionary Nitrogen-Enhanced technology. This innovation significantly improves the durability of the water heater's tank by reducing corrosion, thus extending the lifespan of the unit. This means homeowners can expect reliable performance for many years, with fewer maintenance concerns.

The heater also incorporates advanced insulation techniques, which minimize heat loss and ensure that water is heated quickly and efficiently. The well-insulated tank minimizes the loss of heat to the environment, meaning that less energy is required to maintain water temperature, further enhancing energy savings.

Safety is another paramount aspect of the AOSRG45900. It includes a flame arrestor and a safety shut-off valve, providing peace of mind for users. These safety features prevent unnecessary accidents, ensuring a secure and worry-free operation.

Additionally, the A.O. Smith AOSRG45900 comes equipped with a user-friendly digital display that allows homeowners to easily monitor and adjust the temperature settings according to their preferences. This level of control enhances the overall user experience and provides an extra layer of convenience.

In summary, the A.O. Smith AOSRG45900 is a state-of-the-art gas water heater that exemplifies quality, efficiency, and safety. Its innovative technologies, like Nitrogen-Enhanced tank protection, combined with excellent insulation and user-friendly controls, make it an ideal choice for families looking for a dependable and efficient water heating solution. With A.O. Smith's reputation for reliability, homeowners can trust the AOSRG45900 to meet their hot water needs confidently.