State Water Heater Age Checker
Decode your State serial number to find the manufacturing date, age, and full specs. Free and instant - no account needed.
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Finding Your State Serial Number
Check these four spots on your State water heater
Common Locations
What to Look For
- White or metallic manufacturer sticker
- Labeled "Serial No." or "S/N"
- Typically 8–12 characters long
- Usually near the model number
Can't find it? Try removing access panels or checking behind the temperature dial.
State Serial Number Examples
Don't worry if yours looks different - State has multiple formats and our system can decode most variations.
About State Water Heaters
State water heaters have served American homes and businesses for over 70 years, building a reputation for straightforward design, reliable performance, and excellent value. Founded in 1946 in Ashland City, Tennessee, State Industries quickly became a respected manufacturer through focus on quality construction and customer service. The company operates as part of A.O. Smith Corporation while maintaining its distinct brand identity and product lines. State products are sold primarily through wholesale distributors to professional plumbers and contractors, ensuring proper installation and service support. Their extensive commercial product range makes State a preferred choice for apartments, hotels, restaurants, and industrial facilities.
State manufactures a comprehensive range of tank-type gas and electric water heaters for both residential and commercial applications, with capacities from compact 2.5-gallon point-of-use units to massive 120-gallon commercial systems. Residential models feature reliable gas valve assemblies, quality heating elements, and Everkleen self-cleaning technology that reduces sediment accumulation. The Proline XE series delivers enhanced efficiency through improved insulation and combustion design, while commercial Sandblaster models include heavy-duty construction with commercial-grade anodes and reinforced tank designs. Many units achieve impressive first-hour ratings and recovery rates to meet high-demand scenarios in busy households or commercial settings.
State supports its products with competitive warranty terms including 6 to 12-year coverage options depending on the model and installation requirements. Professional contractors appreciate State's consistent quality, straightforward installation procedures, and readily available replacement parts through wholesale suppliers. The company provides detailed specification sheets, installation manuals, and sizing calculators that help ensure proper equipment selection. Technical support is available through distributor partners and State's customer service team. State water heater serial numbers typically incorporate clear year and month indicators, making it easy for service technicians to determine manufacturing dates when planning maintenance or evaluating replacement timing.
Where to find the serial
State Industries rating plates are on the upper third of the tank, printed in black on a silver foil background. The serial is labeled SERIAL or SER. NO. and sits below the model number. On larger commercial Sandblaster units the label is moved to the side panel for accessibility.
What the serial actually looks like
Why the age is worth knowing
State residential tanks typically come with 6, 9, or 12 year tank warranties. Commercial Sandblaster units have shorter coverage but the heavier construction often lasts well past warranty. After year 8 on a residential unit, the anode rod is usually fully consumed and the tank is on borrowed time.
Quick answers for this brand
Is State Industries still a separate company?
State Industries became part of A.O. Smith in 2001 and now operates as a brand rather than a standalone company. The Ashland City, Tennessee headquarters is still where State branded tanks come from, but engineering and parts are shared with the rest of the A.O. Smith family.
Where can I buy a State water heater?
State is sold through plumbing wholesale distributors and not at Home Depot or Lowe's. You typically get one when a plumber recommends it for a replacement or new construction job. Parts are widely available through plumbing supply houses nationwide.
What's the difference between State Proline and Sandblaster?
Proline is the residential line, Sandblaster is the heavy-duty commercial line. Sandblaster units have larger anode rods, thicker insulation, and tougher tank construction designed for high-recovery commercial use. Both decode age the same way from the serial.
Protect your water heater and 20+ home systems with a home warranty
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